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GB/T 2673-2007 hexalobular socket countersunk head screws

Standard Number:  GB/T 2673-2007
Title:  hexalobular socket countersunk head screws
Language:  Simplified Chinese
Publication Date:  2007/7/2
Execute Date:  2007/12/1
Adopted International Standard:  GB/T 1237;GB/T 193;GB/T 2;GB/T 3098.1;GB/T 3098.10;GB/T 3098.6;GB/T 3103.1;GB/T 3106;GB/T 5267.1;GB/T 5267.2;GB/T 5276;GB/T 5779.1;GB/T 90.1;GB/T 90.2;GB/T 9145;ISO 10664-2005 Hexalobular internal driving feature for bolts and screws;ISO 8992-1986 fasteners; general requirements for bolts, screws, studs and nuts
Status:  Current
Standard Type:  Product
International Classification for Standards (ICS)MECHANICAL SYSTEMS AND COMPONENTS FOR GENERAL USE>>Fasteners>>Bolts, screws, studs
CCS Classification for Standardsmechanical>>Gm parts>>Fasteners,
Publisher:  Chinese Standards(GB)
Number of Pages:  

Preface: This standard is the national standard socket head screw products one of the standard. This series include: a) GB/T2670.1-2004 socket head flower pan head self-tapping screw; B) GB/T2670.2-2004 inner hexagon countersunk head tapping screw; flower C) 2 GB/T2670.3 - 004 inner hexagonal shape oval head self-tapping screws; D) GB/T2671.1 flower-like low - 2004 socket head cylinder head screw; E) GB/T2671.2 flower-like cylindrical hex head screws inside - 2004; F) GB/T2672 flower-like pan head - 2004 socket head screw; G ) GB/T2673 flower-like countersunk head - 2007 socket head screw; H) GB/T2674 flower-like oval head - 2004 socket head screw. Instead of this standard GB/T2673-1986 the flower-like heavy hex head screws. This standard major changes compared with GB/T2673-1986 As follows: increase - stainless steel, non-ferrous metal materials and their corresponding performance level (see table 2); - surface treatment increased the electrolytic zinc coating (see table 2). This standard put forward by China machinery industry federation. This standard by the national fastener standardization technical committee (SAC/TC85) under centralized. Since this standard Units: grass productivity promotion center in the machine. This standard replaced all previous releases of standard is: GB2673-81, GB/T 2673-1986 Hexagon lobular socket countersunk head screws.   
Description:This standard specifies the thread specifications for the m6 ~ m20, performance level is 4.8, the a3, a2-70-70, cu2, cu3 and product level to a level of flower-like heavy hex head screws.
if you need other technical requirements, should from the current standard (gb/t 193, gb/t 9145, gb/t 3106, gb/t 3098.1, gb/t3098.6, gb/t3098.10 and In the gb/t3103.1) option.
Cross References:,,,,
GB/T2 (GB/T 2-2001 Fasteners--Ends of parts with external thread,idtISO4753:1999)
GB/T90.1 (GB/T 90.1-2002 Fasteners--Acceptance inspectiox,idtISO3269:2000)
GB/T193 (GB/T 193-2003 General purpose metric screw threads--Generalplan,ISO 261-1998 ISO general purpose metric screw threads - General plan,ISOgeneralpurposemetricscrewthreads-Generalplan,MOD)
GB/T1237 (GB/T 1237-2000 Designation system for fasteners,eqvISO8991:1986)
GB/T3098.1 (GB/T 3098.1-2000 Mechanical properties of fasteners--Bolts,screws and studs,idtISO898-1:1999)
GB/T3098.6 (GB/T 3098.6-2000 Mechanical properties of fasteners--Bolts,screws and studs made of stainless-steel,idtISO35061:1997)
GB/T3098.10 (GB/T 3098.10-1993 Mechanical properties of fasteners--Bolts,screws,studs and nuts made of non-ferrous metals,eqvISO8839:1986)
GB/T3103.1 (GB/T 3103.1-2002 Tolerances for fasteners--Bolts,screws,studs and nuts,idtISO4759-1:2000)
GB/T3106 (GB/T 3106-1982 Bolts,screws and studs--Nominal lengths,and thread lengths for general purpose bolts,eqvISO888:1976)
GB/T5267.1 (GB/T 5267.1-2002 Fasteners--Electroplated coatings,ISO 4042-1999 fasteners -- electroplated coatings,IDT)
GB/T5267.2 (GB/T 5267.2-2002 Fasteners--Non-electrolytically applied zinc flake coatings,ISO 10683-2000 Fasteners - Non-electrolytically applied zinc flake coatings,IDT)
GB/T5276 (GB/T 5276-1985 Fasteners--Bolts,screws,studs and nuts--Symbols and designations of dimensions,eqvISO225:1983)
GB/T5779.1 (GB/T 5779.1-2000 Fasteners--Surface discontinuities--Bolts,screws and studs for general requirements,idtISO6157-1:1988)
GB/T9145 (GB/T 9145-2003 General purpose metric screw threads--Limits of sizes for the screw threads of medium quality and preferable plan,ISO 965-2-1998 ISO general purpose metric screw threads - Tolerances - Part 2: Limits of sizes for general purpose external and internal screw threads - Medium quality,ISOgeneralpurpose metricscrewthreads-Tolerances-Part2:Limitsofsizesforgeneralpurposeexternalandinternalscrewthreads-Mediumquality,MOD)
ISO 8992-1986 fasteners; general requirements for bolts, screws, studs and nuts
ISO 10664-2005 Hexalobular internal driving feature for bolts and screws
File Format:  PDF(Acrobat Reader) or Word version doc Document
File Size:  944KB
Tile in English:  hexalobular socket countersunk head screws

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