Standard No.:	GB/T 5784-1986
Chinese Name:	六角头螺栓 细杆 B级
English Name:	Hexagon head bolts; Reduced shank; Product grades B
Professional Classification:	J13 Fastener
Professional Classification:	GB National Standard
ICS Classification:	21.060.10
Issued by:
Issued on:	1986-01-17
Implemented on:	1986-10-01
Status:	VALID
Language:	English
File Format:	PDF
Word Count:	1500 words
Price(USD):	45 (USD)
Delivery:	via email in 1-3 business day

1 Introduction

This standard specifies the hexagon head bolts with thread size of M3~M20, reduced shank and of product grade B.
This standard is identical to “Hexagon Head Bolts-Product Grade B-Reduced Shank(Shank Diameter ≈ Pitch Diameter)” (ISO 4015-1979).

2 Normative References

GB 196-81 “General Purpose Screw Threads-Basic Dimensions for Diameter from 1 to 600mm”;
GB 197-81 “General Purpose Screw Threads-Tolerances and Fits for Diameter from 1 to 355mm”;
GB 2-85 “Fasteners-Ends of Parts with External Thread”;
GB 3098.1-82 “Mechanical Properties of Fasteners-Bolts, Screws and Studs”;
GB 3098.6-86 “Mechanical Properties of Fasteners-Stainless Steel Bolts, Screw and Nuts”;
GB 3103.1-82 “Tolerances for Fasteners-Bolts, Screws and Nuts”;
GB 5267-85 “ Electroplated Coatings on Threaded Fasteners”;
GB 5779.1-86 “Surface Discontinuities of Fasteners on bolts, Screws and Studs for General Requirements”;
GB 90-85 “Acceptance Inspection, Marking and Packaging of Fasteners”