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Hexagon Head Bolts with Split Pin Hole in Shank · GB/T 31.1-2013
Hexagon Head Bolts

Hexagon Head Bolts with Split Pin Hole in Shank

GB/T 31.1-2013 (reference only)

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GB/T 31.1-2013 dimension drawing

Dimensions in mm
GB/T 31.1-2013 dimension drawing

Specification parameters

Technical conditions and referenced standards
Steel Stainless steel
General technical requirements
  • GB/T 16938
Thread
Tolerances
6g
Standard
  • GB/T 196, GB/T 197
Mechanical properties
Class
  • d ≤ 39 mm: property classes 5.6, 8.8 and 10.9;
  • d > 39 mm: by agreement
  • d≤24mm:A2-70, A4-70;
  • 24mm<d≤39mm:A2-50, A4-50;
  • d > 39 mm: by agreement
Standard
  • GB/T 3098.1
  • GB/T 3098.6
Tolerances
Product grade
Except as specified in Clause 3, the following applies:
Product grade A applies where d ≤ 24 mm and l does not exceed the lesser of 10d and 150 mm.
Product grade B applies where d > 24 mm or l exceeds the lesser of 10d and 150 mm.
Standard
  • GB/T 3103.1
Split pin hole
  • GB/T 5278
Surface treatment
  • Oxide coating;
  • Electroplating requirements in accordance with GB/T 5267.1;
  • Non-electrolytically applied zinc flake coating in accordance with GB/T 5267.2
  • Simple treatment
Any other surface treatment shall be agreed between the purchaser and supplier.
Surface discontinuities
  • GB/T 5779.1
  • –
Acceptance inspection and packaging
  • GB/T 90.1, GB/T 90.2

Product overview

A hexagon head bolt with a split pin hole through the shank. Confirm the hole diameter and location.

For a quote, share the required dimensions, material, finish and quantity. Availability and lead time are confirmed for each enquiry.