Standard No.:	GB 30-1976
English Name:	Hexagon Head Bolts
Chinese Name:	六角头螺栓
Professional Classification:	GB    National Standard
Issued by:	National Bureau of Standard Measurement
Implemented on:	1977-10-1
Status:	superseded
Superseded by:	GB/T 5784-1986 Hexagon head bolts; Reduced shank; Product grades B
Superseded on:	1986-10-1
Language:	English
File Format:	PDF
Word Count:	1500 words
Price(USD):	30.00
Delivery:	via email in 1 business day

Mark illustration:

Hexagon head bolts with coarse regular screw thread, 10mm diameter, 100mm length, Grade 5.9 mechanical property without surface treatment;

Bolt M10×100 GB 30-76

If all screws are full of screw threads, the mark Q shall be added:

Bolt M10×100-Q GB 30—76