Square Head & T-Slot Bolts

Square Head Bolts

GB/T 8-2021 (reference only)

Nominal size d

Request a quote ↗

GB/T 8-2021 dimension drawing

Dimensions in mm

Standard	Standard body

		Steel
General technical requirements		GB/T 16938
Thread	Tolerances	8g
Thread	Standard	GB/T 193, GB/T 9146
Mechanical properties	Class	d ≤ 39 mm: property class 4.8; d > 39 mm: by agreement
Mechanical properties	Standard	d≤39mm:GB/T 3098.1; d > 39 mm: by agreement
Tolerances	Product grade	Product grade C applies except as specified in Clause 4.
Tolerances	Standard	GB/T 3103.1
Surface treatment		No treatment (uncoated and unplated) ; Electroplating requirements in accordance with GB/T 5267.1; Non-electrolytically applied zinc flake coating requirements in accordance with GB/T 5267.2; Any other technical requirements or surface treatments 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

Bolts with an external square head. Confirm head clearance, thread length and finish for the installation.

For a quote, share the required dimensions, finish and quantity.