Westfield Fasteners Ltd Logo
Westfield Fasteners Ltd Telephone: 01844201133, Email: enquiries@westfieldfasteners.co.uk
Home   /   Bolts and Machine Screws - Metric   /   M20 Unbrako Socket Head Countersunk Screws ISO 10642 in Black Oxide High Tensile Steel Class 12.9

M20 Unbrako Socket Head Countersunk Screws ISO 10642 in Black Oxide High Tensile Steel Class 12.9

A countersunk headed screw conforming with ISO 10642 or DIN 7991, requiring a hex key (otherwise known as an Allen key) to fit. The countersunk head is typically used in conjunction with a countersunk hole providing a flush, snag free fit. The head diameter is slightly larger than that of the equivalent DIN 965 Phillips or Pozi driven screw. 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 Countersunk Screws ISO 10642 in BO-12.9 image
Unbrako logo
technical drawing of Unbrako Socket Head Countersunk Screws ISO 10642
Technical Summary
d nominal diameter M20
thread pitch thread pitch 2.50
dk head diameter 36
k head height 8.50
s drive size 12.0
b minimum thread length 46
t recess depth 5.90
e width across corners 2.50
Standard ISO 10642 (DIN 7991)
all dimensions in millimetres (mm)
Unbrako Engineering Guide
< View All Sizes
Description Sale Qtys Qty Price Breakdown Despatch Estimate
M20 x 35mm Unbrako Socket Head Csk Screw Full Thread in Black Oxide
WF48356
£0.00
M20 x 40mm Unbrako Socket Head Csk Screw Full Thread in Black Oxide
WF48357
£0.00
M20 x 45mm Unbrako Socket Head Csk Screw Full Thread in Black Oxide
WF48358
£0.00
M20 x 50mm Unbrako Socket Head Csk Screw Full Thread in Black Oxide
WF48359
£0.00
M20 x 60mm Unbrako Socket Head Csk Screw Full Thread in Black Oxide
WF48360
£0.00
M20 x 70mm Unbrako Socket Head Csk Screw Full Thread in Black Oxide
WF48361
£0.00
M20 x 80mm Unbrako Socket Head Csk Screw Full Thread in Black Oxide
WF48362
£0.00
M20 x 100mm Unbrako Socket Head Csk Screw Full Thread in Black Oxide
WF48363
£0.00
M20 x 120mm Unbrako Socket Head Csk Screw Part Thread in Black Oxide
WF48364
£0.00
M20 x 140mm Unbrako Socket Head Csk Screw Part Thread in Black Oxide
WF48365
£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 Countersunk Screws ISO 10642
Technical Summary
d nominal diameter M20
thread pitch thread pitch 2.50
dk head diameter 36
k head height 8.50
s drive size 12.0
b minimum thread length 46
t recess depth 5.90
e width across corners 2.50
Standard ISO 10642 (DIN 7991)
all dimensions in millimetres (mm)
Unbrako Engineering Guide
FSB logo CBI logo