BS 3643-1

Specification for ISO metric screw threads — Part 1: Principles and basic data

English 1981
3.001
BS
Detailed Information

This Part of this British Standard specifies the principles and basic data for single-start, parallel screw threads having the ISO basic profile for triangular screw threads. Data for 1,0 mm to 300 mm diameter threads is tabulated and Appendix B is included giving the information necessary to calculate the limits of size for exception to the tabulated data.

Download File
(Log in to download spec.)

Check out other specifications

JIS
JIS B 1119
1995
English

Machine screws and nuts for spectacle frames

This Japanese Industrial Standard specifies the machine screws made of stainless steel, brass, and nickel silver (hereafter referred to as “machine screws”) as well as the nuts made of nickel silver.
ASTM
ASTM A574M
1998
English

Standard Specification for Alloy Steel Socket-Head Cap Screws [Metric]

1.1 This specification covers the requirements for quenched and tempered alloy steel socket-head cap screws 1.6 mm through 48 mm in diameter having a minimum ultimate tensile strength of 1220 MPa.
DIN
DIN 479
1985
English

Square head bolts with short dog point

This standard specifies product grade A square head bolts with short dog point and M 5 to M 24 coarse thread. Where, for special purposes, the bolts are to meet requirements differing from […]
DIN EN
DIN EN 1664
1998
English

Prevailing torque type all-metal hexagon nuts with flange (ISO 7044: 1997, modified) English version of DIN EN 1664

This European Standard specifies the characteristics of prevailing torque type all-metal hexagon nuts with flange and threads from M5 up to M20 inclusive, in product grade A for threads up […]
DIN
DIN 6901
1990
English

Tapping screw and washer assemblies

This standard specifies requirements for screw and washer assemblies consisting of a tapping screw with f!at bearing face and a DIN 6903 captive washer
DIN
DIN 7990
1989
English

Hexagon head bolts for structural steel bolting for supply with nut

This standard specifies requirements for M12 to M30 hexagon head bolts for supply with hexagon nut, assigned to product grade C, for use in structural steel bolting. These bolts shall alway […]
Custom
John Deere | JDM F15
2014
English

Specification for Electroplated Zinc Coatings on Fasteners

JDM F15 specifies requirements for electroplated zinc coatings for fasteners made of steel. JDM F15 applies primarily to electroplated coatings on threaded fasteners, non-threaded fasteners […]
DIN
DIN 2095
1973
English

Helical Springs Made of Round Wire – Quality Specifications for Cold Coiled Compression Springs

This Standard applies to helical compression springs made of spring-hard round wire which, after cold coiling, are subjected only to tempering to relieve residual stresses. Cold coiled comp […]
JIS
JIS B 0210
1973
English

Limits of sizes and tolerances for unified coarse screw threads

This Japanese Industrial Standard specifies limits of sizes and tolerances for unified coarse screw threads specified in JIS B 0206-Unified Coarse Screw Threads, mainly used for the purpose […]