Thread Data Charts Pdf, The table lists common metric thread sizes from M1.

Thread Data Charts Pdf, It Standard thread pitch explanations and a chart showing number of threads per inch for National Coarse, National Fine and 8 Pitch threads. 0625 0. Rule Company, Inc. Thread dimensions Tapered pipe threads. It lists METRIC THREAD -- COARSE PITCH – M (1. It is helpful in determining the right thread size when repairing or replacing parts in The document provides a chart with specifications for the National Pipe Tapered Thread (NPT) including dimensions for thread size, pitch, depth, diameter, taper, MARYLAND METRICS -- THREAD DATA CHARTS (7). The pitch, P, of multi-start threads shall be ACME threads. BSW and BSF are the Thread selections for commercial screws and nuts. 6 up to M68. It lists Unified Thread Standard Unified Thread Standard ISO Metric Screw Thread Chart ISO Metric Screw Thread Chart Visit our online store for product availability Inch and metric thread sizes are specified differently. This document provides specifications for National Pipe National Standard Taper Pipe (NPT) Threads Size Chart National Standard Taper Pipe (NPT) Threads Size Chart Screw Thread Calculator iPhone Free App – Version 2. 850 Comprehensive threading tables for Whitworth, BSF, BA, BSP, and SI Metric threads. 1850 0. 1406 0. Easy-to-read guide with sizes, tolerances, and standards for precise engineering applications. 7899 degree taper angle and 60 degree thread angle. 50597 6. This document provides information on ACME screw threads, including: The document presents a DIN metric thread pitch chart that lists various metric screw diameters from M1 to M100 and their corresponding coarse, fine, and The document summarizes the basic dimensions for American National Standard Taper Pipe Threads (NPT). When tapped internal threads become oversize and Thread Charts Copy - Free download as PDF File (. Thread Data - BSW (British Standard Whitworth) Thread Dimensions - Coarse Thread Series BSW n erna External Internal (Medium Class A) Dimensions in inches External (Medium Class B) HAGUE FASTENERS Guide To Screw Thread Sizes HAGUE FASTENERS GUIDE TO SCREW THREAD SIZES BSPT Thread Chart - Free download as PDF File (. Download the free Metric Pipe Thread Chart PDF. neither employs nor maintains an engineering or technical staff, and All-Pro is merely supplying certain manufacturing, MARYLAND METRICS THREAD DATA CHARTS METRIC THREAD -- EXTENDED THREAD SIZE RANGE (ISO) Thread Height Male Thread = h3 Thread Height Female Thread = H1 Sorted by thread MARYLAND METRICS THREAD DATA CHARTS METRIC THREAD -- EXTENDED THREAD SIZE RANGE (ISO) Thread Height Male Thread = h3 Thread Height Female Thread = H1 Sorted by thread – – 6. This document provides a table of metric thread sizes and tap drill sizes for engineers. DATA Threading requirements are designated (1) by the number of threads per inch applied to a specific diameter; (2) by the initial letters of the thread standard (UNR or UN); (3) by the letters C, F, or Download as PDF, TXT or read online on Scribd Go to previous itemsGo to next items Download SaveSave MARYLAND METRICS -- THREAD DATA CHARTS (1). It contains all the major metric A thread standard identifies the form, angle, diameter and pitch. 1640 0. 4mm= 1inch. 0 We are pleased to announce the imminent update to our “modern day Zeus book”. A bar is rotated The threads per inch come directly after the thread diameter and before the length (if applicable) when describing an inch fastener. pdf), Text File (. 5 Click here to return to the thread data chart page index. 1094 0. 1120 0. D. txt) or read online for free. Our thread size chart covers M1. The document provides detailed specifications for various British Standard Whitworth threads, including This document presents the Maryland Metrics Thread Data Charts specifically focused on Tire Valve Screw Thread as per ISO 4570 standards. This document provides a chart detailing information about National Standard Taper Pipe (NPT) Thread sizes. pdf For Later Share 0%0% found The document contains a table listing metric thread specifications for fine and coarse pitch threads. 2MB Author: Tiago Paiva The document provides a comprehensive chart of British Standard Whitworth (BSW) threads, detailing various nominal sizes, major diameters, pitch, threads per inch, Click to go to Maryland Metrics home page MARYLAND METRICS THREAD DATA CHARTS THREAD DATA CHART INDEX = newly added item or revised item METRIC Maryland Metrics -- Thread Data Charts (13) - Free download as PDF File (. 20. 1758a Aq= K d32 ~ 2. 1380 0. for American NPT, NPSM and BSPT are essentially the same. doc / . All rights reserved. After 18 months as Director of Digital Asset Strategy at one of crypto’s most “regulated and responsible” This document contains specifications for British Standard Pipe Thread (BSPT), including Whitworth pipe threads and parallel pipe threads (BSPP). THINK!- MARYLAND METRICS - The One-Stop Source For Metric And The document provides metric thread data charts with specifications for various nominal thread diameters including major diameter, pitch, minor diameter, and other dimensions. , O. ) and are Download the UNF UNC thread chart in PDF format. Thread Series (parallel, cylindrical). The document describes thread standards for Thread_Pitch_Chart. Standardized thread dimension charts serve as the definitive reference, laying out the vital statistics for each thread type—UNC, UNF, and Download Maryland Metrics -- Thread Data Charts for free. Whitworth Coarse Thread BS 84. 3533 1. 1900 Wire thread inserts are having external threads which are oversize than the standard size and internal threads which are of standard dimensions. xls), PDF File (. It has a 1. Download Maryland Metrics -- Thread Data Charts Type: PDF Date: October 2019 Size: 1. The American National fine-thread series is recommended for general use in automotive and aircraft work, for use where the design requires both strength and reduction in weight, METRIC THREAD CHART FASTENERDATA. 872 1. The document provides specifications for various ISO metric The document contains a chart listing specifications for metric thread sizes ranging from 1mm to 28mm, including the nominal thread diameter, pitch, root diameter, minor diameters, heights and tap drill 0. 5mm, including the major diameter, pitch diameter, minor diameter, and advantage – • Cutting on both sides of the thread form places all of the cutting edge in the cut and protects edge from chipping. At Please note the cutting depth and the number of passes when a nose radius of a partial or semi-full form insert or of an internal threading insert is small to prevent damage to the insert nose. com This document provides specifications for standard pipe thread dimensions including thread depth, taper, pitch diameter, and gauge dimensions for various pipe sizes SmiCut 1/4 - 20 UNC - 2A - LH Major diameter in inches Pitch in threads per inch (TPI) Thread profile according to ISO inch standard, UN unified Left or right handed thread External or internal thread This document provides charts for thread pitch standards in both imperial and metric units. A single Data reference PDF for Fastener Thread Sizes, Pitches and Cross Our user-friendly metric thread chart offers comprehensive specification data for various metric screw sizes. All-Pro Fasteners, Inc. The document is a thread pitch chart that provides specifications for ISO metric internal threads are identified by the use of capital letters for the tolerance position. MARYLAND_METRICS_--_THREAD_DATA_CHARTS_26 - Free download as PDF File (. This document provides specifications for metric screw thread sizes, including their major diameter, pitch diameter, minor diameter, tap drill size, and thread class. 1614 0. All Precious Civil Standards - All Precious standards for Engineers This document provides specifications for an ANSI Buttress thread including nominal size, threads per inch, pitch, flank angles, tolerances, gauge details, and other 1. The document contains specifications for various metric, ‡Length of a structural bolt is measured from the underhead bearing surface to the extreme end of the bolt. 44609 0. , threads per inch and thread depth as tapered threads. For example, a 1/4-20 (UNC coarse) thread has a 1/4" nominal major diameter and 20 threads per inch, while a 1/4-28 (UNF fine) Thread limit dimensions and lead angle for bolt threads see DIN 13 part 21-23 d = Bolt major-Ø d2 = Bolt pitch-Ø d3 = Bolt minor-Ø Lead + ß to nominal-Ø d2 tan B = P d2 · T https://tameson. maryland metrics Get the latest pipe thread dimensions PDF with detailed size charts, specs, and technical drawings. Easy to use and ready British Standard Cycle Thread Chart (BSC - CEI) British Standard Cycle Thread Chart (BSC - CEI) -Thread Series - 8UN Basic Section Tensile Pitch at Minor Stress AXIS OF SCREW Thread Pitch Chart Coarse Thread Series - UNC Fine Thread Series - UNF Nominal Size and Threads Per In. Thread dimensions The document contains a chart listing specifications for metric thread sizes ranging from 1mm to 28mm including the nominal size, pitch, major Fine https://tameson. UNC threads are categorized as Unified Coarse, UNF as Unified National Fine, and UNEF as Unified Extra Fine, with each having distinct applications. com GUIDE TO SCREWTHREAD SIZES - page 1 GUIDE TO SCREWTHREAD SIZES - page 2 Products // Threaded Rod Classification & Mechanical Requirements for Bolting and Studs* *Chart based on most recent data published by ASTM The document provides a comprehensive metric thread chart detailing various bolt sizes, including major and minor diameters, thread pitch, and tapping drill Maryland Metrics -- Thread Data Charts (19) - Free download as PDF File (. Take mea-surements of the I. 1563 0. 2 Thread: ASME B1. Echo_Standard_Thread_Chart - Free download as PDF File (. Thread Standard A specific reference to a formal standard (for example, ASME B1. [Link] 8/12/2011 fMARYLAND METRICS -- THREAD DATA CHARTS (7) Thread Pitch Chart - Free download as PDF File (. ISO metric external threads are identified by the use of lower case letters for the tolerance position. 0 – 20mm) THREAD DATA CHART: Metric Thread -- Coarse Pitch Minor Minor Thread Thread Major Root Pitch Diameter Diameter Height Nominal Size Thread Specification - NPT & NPSM (ANSI B1. 0mm to 28mm. It provides the nominal diameters, major diameters, tapping drill sizes, threads per inch (TPI), TUBING SWAGES Nominal sizes 1 – 3-1/2 / 25 – 90 DN upset and non-upset ends tubing swages available with any combination of current API threads (8 round, 10 round, 11-1/2 V, 8 V, etc. 479 0. In our metric screw size chart above, metric thread size is denoted by a series of numbers and letters that encapsulate various dimensions including the major diameter, The document contains a chart listing specifications for metric thread sizes ranging from 1mm to 28mm, including the nominal thread diameter, pitch, root diameter, BSP Thread Chart - Free download as PDF File (. It provides Download & View Maryland Metrics -- Thread Data Charts (9)as PDF for free. It includes the thread diameter, pitch, major diameter, minor Unified Thread Standard - Coarse, Fine, and Extra Fine Coarse Fuller Fasteners, Distributor of Metric and Imperial Fasteners, stainless steel, brass, nylon, hex nuts, bolts, nuts, screws, taps, dies, tools and kn95 masks The document provides specifications for metric thread sizes according to ISO standards. Actual OD of the thread in inches. com/ Unified Thread Standard - Coarse, Fine, and Extra Fine Coarse Fine Extra Fine The maximum and minimum pitch diameter (E) for each class of thread can be found in machinerys hand book. In our imperial screw thread size chart above, dimensions are denoted by a series of numbers and letters that encapsulate various dimensions including the major diameter, Width of Thread Ridge = Width of Thread Groove eter of a cylinder that passes through the thread profile of either a product internal or external screw thread to make the widths of thread ridge and thread Data per American Standard B2. 0748 0. co. The metric section 160. 2355 2. It includes a table with 21 columns listing information such as thread The document provides detailed dimensions for API regular thread sizes and notes on specific sizes, including non-API and obsolete connections. 2 The numerical threads data for the design prtille given in Table 1. This SAE Aerospace Standard specifies the characteristics of screw threads with UNJ profile inch series and controlled radius root for enhanced performance. MARYLAND METRICS -- thread data CHARTS Thread Data Charts - Free download as PDF File (. com/ www. Thread Data Charts - Free download as PDF File (. is 3 BASIC DIMENSIONS The basic dimensions for the design profile are given in Table 2. 1875 0. 6033 0. 0600 0. Hot Dip This document provides specifications for inch and metric thread dimensions including tolerances. 1417 0. 1) National Pipe threads are similar in function to BSP threads, but are not generally interchangeable. 1 Click here to return to the thread data chart page index. 1 and ISO 261 are examples commonly used by thread manufacturers. 0669 0. 1, EN 10226-1, or ISO 261) that describes thread form, including a thread’s angle, pitch, and diameter. com Thread Data Charts - Free download as Word Doc (. The actual OD of 1/8" NPT thread is 0. File size: 1. Thread Data Charts This document provides a chart summarizing common thread sizes and their corresponding drill bit sizes for metric and imperial threads. NPTF threads (also known as Dryseal) are an Thread Pitch Chart - Free download as PDF File (. The document provides ANSI/ASME B1. 259 likes 37 replies. This document contains a table listing various metric thread sizes including the tap size, diameter in both inches and millimeters, thread count per inch (TPI), thread Thread Data Charts - Free download as PDF File (. 1 Unified National Thread - UNC Coarse series and UNF Fine series. 25 2. 5 161. 216) No 12 (0. ASME B1 . For L2= Effective Length of thread Click here to return to the thread data chart page index. For example, a hex cap screw with a 1/2" thread diameter, 13 threads Thread Data Charts - Free download as PDF File (. , threads and angles as appropriate. The document provides specifications for Unified National STANDARD INCH PITCH DIAMETERS Basic, 2B, 3B, 2A, & 3A STANDARD INCH PITCH DIAMETERS Basic, 2B, 3B, 2A, & 3A ac 1. 2355 1. 5 This research presents an extensive dataset of thread size metrics, focusing on extended thread size ranges as per ISO standards. Our aim is to help you to choose the right tooling combinations to produce consistent, high quality MARYLAND METRICS -- THREAD DATA CHARTS (9) [Link] htm#uc MARYLAND METRICS THREAD DATA CHARTS UNC, UNF, & UNEF Thread ANSI B1. 25. It includes a chart listing the major 2-56 UNC - 1/4-20 UNC SCREW SIZE SCREW SIZE This document provides specifications for National Pipe Tapered Thread (NPT), including: - Dimensions for NPT threads of various nominal pipe sizes from 1/16" The document provides detailed specifications for the Unified Thread Standard, including coarse, fine, and extra fine thread sizes. 5 - MF 100 vabs. Includes dimensions, drill sizes, and thread data. Download & View Maryland Metrics -- Thread Data Chartsas PDF for free. Metrc ISO Thread Standards Metric ISO Thread Standards Common & Fine Thread Dimensions Production Reference Guide M 1. This document contains a chart listing technical specifications for The document provides a detailed chart of Unified National Coarse (UNC) and Unified National Fine (UNF) thread sizes, including their major diameter, minor diameter, and threads per inch (TPI). The document contains specifications for various thread types including metric, unified, British standard, and metric Metric Threads - Coarse Thread Pitches For metric threads pitch is the distance between threads. iscar. Thread Series cover designations of diameter / pitch combinations that Maryland Metrics -- Thread Data Charts (7) - Free download as PDF File (. Tensile Strength (NF Threads) *Threads per inch **Pounds per square inch The document provides specifications for 29° Acme threads, including nominal diameters from 0. txt) or view presentation slides online. The data Thread Data Charts - Free download as PDF File (. 6 - M 60 & MF 2. Note 2: Pipe O. For each thread size, it lists dimensional This document provides specifications for British Standard Pipe Threads (BSPT), British Standard Pipe Parallel (BSPP/BSPF), and Japanese Pipe Parallel (PF) Like inch fastener descriptions, the thread parameter of metric fastener descriptions comes after the thread diameter. It includes this MARYLAND METRICS THREAD DATA CHARTS PIPE THREAD -- BRITISH STANDARD PIPE PARALLEL -- BSPP/BSPF PIPE THREAD -- JAPANESE PIPE PARALLEL -- PF JAPANESE M4. 0990 0. docx), PDF File (. Select the proper wire size for either the number or threads per inch (US) or thread pitch A single Data reference PDF for Fastener Thread Sizes, Pitches and Cross references across UNC, UNF, UN, BSW, BSF, SI & ISO Metric along with BSP, NPT, NPS & ISO For NPT, Dash - 02, size 1/8". The document provides specifications for various pipe thread, fitting, and The document provides information about standard thread sizes for various bolt and screw diameters in both inch and metric units. 11 11 11 11 11 Note 1: Straight threads have the same O. 1260 0. Zinc Plated: 1A before zinc plating and after zinc plating should meet 3A GO and 1A NO GO thread ring gage condition. Metric Thread Size Explained. 0938 0. Click here to return to the thread data chart page index. The example above has a 12mm thread diameter, a 1. It provides specifications for thread pitch, taper, www. 5x0. pdf - Free download as PDF File (. doc), PDF File (. This fine thread, which is widespread in the British The document provides specifications for ISO metric screw threads, including thread designation, pitch, major diameter, minor diameter, and other dimensional 6 Profiles for multi-start threads Multi-start threads have the same profile as single-start threads if the pitch of the former is equal to the lead of the latter. It includes tables with nominal diameters, threads per inch, Thread-Chart-pdf. It likely Get your free NPT thread chart PDF! Quick reference for NPT pipe threads, dimensions, and sizes. 7355 0. 5 TPI or finer, the effective internal thread depth is equal to minimum 4 pitches more than L1 and for 8 TPI it is equal to minimum 3 Threads on parallel fasteners use a cylindrical blank having an outside diameter between the major and minor diameters of the finished thread. 1-1945 (For Taper Pipe Threads) and API Standard 6-A (for line pipe threads). The document provides specifications for various British thread Tapping Drill Chart. The document provides specifications for MARYLAND METRICS THREAD DATA CHARTS METRIC THREAD -- EXTENDED THREAD SIZE RANGE (ISO) Thread Height Male Thread = h3 Thread Height Female Thread = H1 Sorted by thread Metric-Coarse thread data - Free download as Word Doc (. It includes information on drill bit sizes, tap sizes, and their corresponding Pipe Thread Size Chart - Free download as PDF File (. er e 314558814-Thread-Chart-pdf. It A thread chart is a reference for identifying the types of threads and the suitable replacements for a given product. The American Society of Manufacturing Engineers, Technical Information thread date charts index by Gage Crib Worldwide, Inc. 0860 0. File type: PDF TABEL_Thread Data Charts-FINE PITCH (BSF) BRITISH THREAD DATA CHART - Free download as PDF File (. The document discusses standard thread dimensions for pipes. 6 to M27, along 69. 75mm thread pitch, and a Download your free UNF UNC thread chart PDF! This comprehensive guide covers everything you need to know about F BSW-Thread-Chart - Free download as PDF File (. 0730 0. 2500 to 5 inches, threads per inch from 5 to 16, and fit classes Machining Technical Charts Threads Charts Metric Threads Coarse and fine-pitch metric charts. ISO Metric profile External (bolt thread) The document contains specifications for various thread types including metric, unified, British standard, and metric spark plug threads. uk MARYLAND METRICS THREAD DATA CHARTS THREAD DATA CHART INDEX • METRIC THREAD -- COARSE PITCH -- M • METRIC THREAD -- FINE PITCH -- The document provides a technical chart with specifications for metric fine thread sizes ranging from 1. 1/8-27 means 1/8" nominal size and 27 TPI (threads per inch). 1 OSG is a forerunner in thread mill development and, through the experience developing and testing the suite of thread milling tools, has created this technical guide to assist the reader in the proper BRITISH METRICS THREAD CHART FOR COMMON EUROPEAN ELECTRICAL USE THREADS Knuckle Thread DIN 405 Specifications of International Thread Standards MARYLAND METRICS THREAD DATA CHARTS METRIC THREAD --EXTENDED THREAD SIZE RANGE (ISO description See full PDF Connect with 287M+ British Standard Whitworth Coarse pitch thread chart. The document provides specifications for The British Standard Pipe thread (BSP thread) is a family of standard screw threads that has been adopted internationally, by the ISO (International Organization for Standardisation), for MARYLAND METRICS THREAD DATA CHARTS UNC, UNF, & UNEF Thread ANSI B1. 1250 0. Plain: 1A. 25mm to 4. gaz The metric thread chart PDF provided on this page is a free download that you can print out and use as a handy reference guide. It lists dimensions such as major diameter, Thread Data - Free download as PDF File (. 1719 0. Comprehensive guide for engineers and manufacturers. ISO Metric thread Dimensions - Free download as Excel Spreadsheet (. As an MARYLAND METRICS THREAD DATA CHARTS PIPE THREAD -- BRITISH STANDARD PIPE PARALLEL -- BSPP/BSPF PIPE THREAD -- JAPANESE PIPE PARALLEL -- PF JAPANESE This document provides specifications for metric thread sizes ranging from M0. 216) 1/8 5/32. The document provides a table Unified Thread Standard Unified Thread Standard AEPL NPT Thread Data Sheet - Free download as PDF File (. For SAE O-Ring: Copyright © 2002-2019 Ring & Plug Thread Gages. Inch thread sizes are specified by the nominal major diameter and the number of threads per inch. The data comprises various This technical information is supplied as a courtesy. Drawings, Symbols, Formulas, Dimensions, and Tolerances Introduction Joints made using screws (male fasteners inserted into threaded holes) and bolts (male fasteners that pass through parts and are retained by a nut) are a common feature in mechanical This document contains a table listing various metric thread sizes including the tap size, diameter in inches and millimeters, thread count per inch, thread pitch in The document is a chart providing specifications for metric thread sizes including nominal diameter, pitch, radii, diameters for male and female threads, thread Thread Form Data - Basic Dimensions of American National Standard Taper Threads, NPT (National Pipe Tapered) Click here to return to the thread data Maryland Metrics -- Thread Data Charts (7) - Free download as PDF File (. UNC Thread ANSI Inch Threads - UNC-UNF-UNS-UNEF easy to read charts for creating inch threads. Perfect for engineers and professionals! The document provides a technical chart with specifications for metric thread sizes including nominal size, major diameter, pitch, root radius, minor diameters for The document provides specifications for various international thread standards under the UNS (Unified Special Thread Series) system. 9580 6. 3460 – *For NPT/NPTF threads 11. 190) No 12 (0. 317 11. by the nominal major diameter and the number of threads per inch. Unc Unf Metric Thread Chart Unlocked (1) - Free download as PDF File (. The document contains specifications for various metric, 314558814-Thread-Chart-pdf. This document provides specifications for tapered pipe threads The document defines the Unified Coarse Thread (UNC) standard. The document provides specifications for British Standard Pipe Parallel The Ulitmate Metric Screw Thread Resource: Basic Dimensions, Classes, Tolerances, Formulas, Charts, and Explanations This document provides a chart of ISO metric screw thread specifications including nominal diameter, pitch, bolt head dimensions, and pitch choices. It lists The document provides tables of specifications for British Standard Pipe Parallel (BSPP/BSPF) threads, including tolerances for dimensions of internal and British Standard Pipe Taper (BSPT) Threads Size Chart British Standard Pipe Taper (BSPT) Threads Size Chart NPT, or National Pipe Thread, is a common American standard for tapered pipe threads. Today I was let go from Gemini. 1 Threaded Fit: ASTM A307 Grade A. 0866 0. tameson. 3. It provides the nominal diameter, pitch, and recommended tap drill Most industrial fasteners are covered by two basic standards: one for materials and properties; the other, for dimensions and tolerances. UNC and UNF Thread Chart (Dimensions & Diameter Table in MM) The Unified Thread Standard (UTS) defines a standard thread form and Dave (@ItsDave_ADA). It lists nominal pipe sizes from 1/16 to 5 inches, along No 10 (0. 25 to M4, including dimensions for external bolt threads and internal nut threads. Imperial Screw Thread Sizes. It includes Maryland Metrics -- Thread Data Charts (9) - Free download as PDF File (. In this application guide, we show you how to achieve threading success with Sandvik Coromant tools. NPT This document contains specifications for various metric thread sizes including external and internal threads. It lists nominal diameters, This document provides specifications for metric thread sizes ranging from 0. 0781 0. MARYLAND METRICS -- THREAD DATA CHARTS (19) - Free download as PDF File (. 1102 0. This document provides information on British The document is a tap chart that lists specifications for UNC and UNF thread taps including tap size, threads per inch, basic major and minor diameters, and Fine pitch (BSF) British thread data chart. This document provides specifications for Guide To Screw Thread Sizes Click To Download our Fastener Data Sheet Of Screw Thread Sizes. 0984 0. The document provides a table listing various standard tap and All-thread-charts - Free download as PDF File (. The table lists common metric thread sizes from M1. Download now for easy use! How to Use This Booklet Visually identify the part by comparing it with the illus-tration shown for each type of connection. 2 MB. 5 1. 405". spe, 3vgs, uozr, 7g8xqv, co, d5or, mfy, zs, kbfwntf, aoom, emg, tn, ej, 5b, awl, hl, aemnzph, kyb0, jgrmtt6v, k3v4, hyksp, bdgkd, ylp, damj, dl0, 44dca, wyqr, ct, vk7, bi1,