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M20 Unbrako Socket Head Cap Screws ISO 4762 in Black Oxide Class 12+ High Tensile Steel

Also known as an Allen screw or Allen bolt, or simply a cap screw. Socket Head Cap screws are a more modern alternative standard machine fastener to the standard hexagon headed bolt or setscrew, as found on much modern machinery. A hex key (otherwise known as an Allen key) is required to fit these fasteners. Conforming to ISO 4762 or DIN 912, the contact surfaces of this screw or bolt are protected from external damage. UNBRAKO® branded and manufactured to be stronger than the other size for size high tensile versions. Includes a precision hex socket for maximum key engagement. Please note that due to the nature of the surface finish on Unbrako products, some surface corrosion may be evident. This does not affect the performance of the product. Property class of 12.9.
Unbrako Socket Head Cap Screws ISO 4762 in BO image
Unbrako logo
technical drawing of Unbrako Socket Head Cap Screws ISO 4762
Technical Summary
d nominal diameter M20
thread pitch thread pitch 2.50
dk max. maximum head diameter 30.0
k max. maximum head height 20.0
s drive size 17
b minimum thread length 52
t recess depth 10.0
Standard ISO 4762 (DIN 912)
Material Black Oxide Class 12+ High Tensile Steel
all dimensions in millimetres (mm)
Unbrako Engineering Guide
< View All Sizes
Description Sale Qtys Qty Price Breakdown Despatch Estimate
M20 x 30mm Unbrako Socket Head Cap (Allen) Screw Full Thread in Black Oxide
WF48115
£0.00
M20 x 35mm Unbrako Socket Head Cap (Allen) Screw Full Thread in Black Oxide
WF48116
£0.00
M20 x 40mm Unbrako Socket Head Cap (Allen) Screw Full Thread in Black Oxide
WF48117
£0.00
M20 x 45mm Unbrako Socket Head Cap (Allen) Screw Full Thread in Black Oxide
WF48118
£0.00
M20 x 50mm Unbrako Socket Head Cap (Allen) Screw Full Thread in Black Oxide
WF48119
£0.00
M20 x 55mm Unbrako Socket Head Cap (Allen) Screw Full Thread in Black Oxide
WF48120
£0.00
M20 x 60mm Unbrako Socket Head Cap (Allen) Screw Full Thread in Black Oxide
WF48121
£0.00
M20 x 65mm Unbrako Socket Head Cap (Allen) Screw Full Thread in Black Oxide
WF48122
£0.00
M20 x 70mm Unbrako Socket Head Cap (Allen) Screw Full Thread in Black Oxide
WF48123
£0.00
M20 x 75mm Unbrako Socket Head Cap (Allen) Screw Part Thread in Black Oxide
WF48124
£0.00
M20 x 80mm Unbrako Socket Head Cap (Allen) Screw Part Thread in Black Oxide
WF48125
£0.00
M20 x 90mm Unbrako Socket Head Cap (Allen) Screw Part Thread in Black Oxide
WF48126
£0.00
M20 x 100mm Unbrako Socket Head Cap (Allen) Screw Part Thread in Black Oxide
WF48127
£0.00
M20 x 110mm Unbrako Socket Head Cap (Allen) Screw Part Thread in Black Oxide
WF48128
£0.00
M20 x 120mm Unbrako Socket Head Cap (Allen) Screw Part Thread in Black Oxide
WF48129
£0.00
M20 x 130mm Unbrako Socket Head Cap (Allen) Screw Part Thread in Black Oxide
WF48130
£0.00
M20 x 140mm Unbrako Socket Head Cap (Allen) Screw Part Thread in Black Oxide
WF48131
£0.00
M20 x 150mm Unbrako Socket Head Cap (Allen) Screw Part Thread in Black Oxide
WF48132
£0.00
M20 x 160mm Unbrako Socket Head Cap (Allen) Screw Part Thread in Black Oxide
WF48133
£0.00
M20 x 180mm Unbrako Socket Head Cap (Allen) Screw Part Thread in Black Oxide
WF48134
£0.00
M20 x 200mm Unbrako Socket Head Cap (Allen) Screw Part Thread in Black Oxide
WF48135
£0.00
M20 x 220mm Unbrako Socket Head Cap (Allen) Screw Part Thread in Black Oxide
WF48136
£0.00
M20 x 240mm Unbrako Socket Head Cap (Allen) Screw Part Thread in Black Oxide
WF48137
£0.00
M20 x 260mm Unbrako Socket Head Cap (Allen) Screw Part Thread in Black Oxide
WF48138
£0.00
M20 x 280mm Unbrako Socket Head Cap (Allen) Screw Part Thread in Black Oxide
WF48139
£0.00
M20 x 300mm Unbrako Socket Head Cap (Allen) Screw Part Thread in Black Oxide
WF48140
£0.00
Prices are subject to quantity discounts based on a sliding scale. Enter the desired quantity in the relevant box in the table above. This will automatically calculate a line price indicating the applicable rate for the quantities selected. All prices shown exclude VAT.
Unbrako logo
technical drawing of Unbrako Socket Head Cap Screws ISO 4762
Technical Summary
d nominal diameter M20
thread pitch thread pitch 2.50
dk max. maximum head diameter 30.0
k max. maximum head height 20.0
s drive size 17
b minimum thread length 52
t recess depth 10.0
Standard ISO 4762 (DIN 912)
Material Black Oxide Class 12+ High Tensile Steel
all dimensions in millimetres (mm)
Unbrako Engineering Guide
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