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Bolts

We carry extensive stocks of part threaded HEXAGON HEAD BOLTS in a range of sizes and materials, in Metric, British and American thread forms.

Metric DIN 931

Diameter
(Nominal)		 Pitch A(max) B(max)
C (min)
≤125
≥130
≥200
M5 0.80 8.00 3.50 16.00 22.00  
M6 1.00 10.00 4.00 18.00 24.00  
M7 1.00 11.00 4.80 20.00 26.00  
M8 1.25 13.00 5.30 22.00 28.00  
M10 1.50 17.00 6.40 26.00 32.00 45.00
M12 1.75 19.00 7.50 30.00 36.00 49.00
M14 2.00 22.00 8.80 34.00 40.00 53.00
M16 2.00 24.00 10.00 38.00 44.00 57.00
M18 2.50 27.00 11.50 42.00 48.00 61.00
M20 2.50 30.00 12.50 46.00 52.00 65.00
M22 2.50 32.00 14.00 50.00 56.00 69.00
M24 3.00 36.00 15.00 54.00 60.00 73.00
M27 3.00 41.00 17.00 60.00 66.00 79.00
M30 3.50 46.00 18.70 66.00 72.00 85.00
M33 3.50 50.00 21.00 72.00 78.00 91.00
M36 4.00 55.00 22.50 78.00 84.00 97.00
M39 4.00 60.00 25.00 84.00 90.00 103.00
M42 4.50 65.00 26.00 90.00 96.00 109.00
M45 4.50 70.00 28.00 96.00 102.00 115.00
M48 5.00 75.00 30.00 102.00 108.00 121.00
M52 5.00 80.00 33.00   116.00 129.00
M56 5.50 85.00 35.00   124.00 137.00
M60 5.50 80.00 38.00   132.00 145.00

C = Is a guide to the minimum amount of thread dependent on the overall length from under the head.
L = Length of bolt under the head (plain + thread)

 

Thread Forms
Metric, Metricfine, UNF, UNC, BSW, BSF

Materials
Mild steel, Grade 8.8
Grade 10.9, Grade 12.9
A2/304 Stainless Steel
A4/316 Stainless Steel
Aluminium
Titanium
Brass
Nylon

Finishes
Bright zinc plated
Zinc and yellow
Black zinc
Galvanised
Nickel