GB/T 5784-1986 Hexagon head bolts with thin shank, Grade B
Basic Information
Standard ID:
GB/T 5784-1986
Standard Name: Hexagon head bolts with thin shank, Grade B
Chinese Name:
六角头螺栓 细杆 B级
Standard category:National Standard (GB)
state:in force
Date of Release1986-01-17
Date of Implementation:1986-10-01
standard classification number
Standard ICS number:Mechanical systems and general parts>>Fasteners>>21.060.10 Bolts, screws, studs
Standard Classification Number:Machinery>>General Parts>>J13 Fasteners
Publication information
other information
Release date:1986-01-17
Review date:2004-10-14
Drafting unit:Machinery Standards Institute
Focal point unit:National Technical Committee for Fastener Standardization
Publishing department:China Machinery Industry Federation
competent authority:China Machinery Industry Federation
Introduction to standards:
GB/T 5784-1986 Hexagon head bolts with thin shank, grade B GB/T5784-1986 Standard download decompression password: www.bzxz.net
Some standard content:
Screw efficiency specification
125200
150148
CB 57B4—86
minnxmin
: ①Try not to use the specifications in brackets. ②The range between the broken lines is the product specification range.
Required length!
minmax
4Technical conditions
Please refer to Table 2.
Mechanical properties
Product grade
Surface treatment
Surface defectsbzxz.net
Acceptance and packaging
5 Marking
GB5784—86
GB 196—81, GB 197—81
5,8,6.8,8.8
Stainless steel
A2—70
GB 3098,6--86
GB3098.182
GB 3103.1—82
①Untreated
②Galvanized passivation
Untreated
GB 5267--85
GB 5779.1—86
GB 90 -- 85
Marking example of hexagonal head bolts with thread specification d=M12, nominal length l=80mm, performance grade 5.8, no surface treatment, grade B:
GB 5784--86—M12×80
Additional instructions,
This standard was proposed by the Ministry of Machinery Industry of the People's Republic of China and is under the jurisdiction of the Standardization Research Institute of the Ministry of Machinery Industry. The Standardization Research Institute of the Ministry of Machinery Industry is responsible for drafting this standard.
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