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M4 Socket Head Countersunk Screws ISO 10642 (DIN 7991) in A2 Stainless Steel

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. Generally manufactured with a full thread, though occasionally some stock may include a partially threaded shank. The head diameter is slightly larger than that of the equivalent DIN 965 Phillips or Pozi driven screw.
Socket Head Countersunk Screws ISO 10642 (DIN 7991) in A2 image
technical drawing of Socket Head Countersunk Screws ISO 10642 (DIN 7991)
Technical Summary
d nominal diameter M4
thread pitch thread pitch 0.70
dk max. maximum head diameter 7.96
dk min. minimum head diameter 7.53
k max. maximum head height 2.48
k min. minimum head height 2.121
s max. maximum drive size 2.580
s min. drive min. 2.520
b minimum thread length 20
t max. maximum recess depth 1.65
t min. minimum recess depth 1.40
e width across corners 3.82
Standard ISO 10642
Material A2 Stainless Steel
all dimensions in millimetres (mm)
html graphic ISO 10642 Standard HTML
pdf graphic ISO 10642 Standard PDF
< View All Sizes
Description Sale Qtys Qty Price Breakdown Despatch Estimate
M4 x 5mm Socket Head Csk (Allen) Screw in A2 Stainless
WF74697
£0.00
M4 x 6mm Socket Head Csk (Allen) Screw in A2 Stainless
WF2548
£0.00
M4 x 8mm Socket Head Csk (Allen) Screw in A2 Stainless
WF2549
£0.00
M4 x 10mm Socket Head Csk (Allen) Screw in A2 Stainless
WF2550
£0.00
M4 x 12mm Socket Head Csk (Allen) Screw in A2 Stainless
WF2551
£0.00
M4 x 16mm Socket Head Csk (Allen) Screw in A2 Stainless
WF2552
£0.00
M4 x 18mm Socket Head Csk (Allen) Screw in A2 Stainless
WF74688
£0.00
M4 x 20mm Socket Head Csk (Allen) Screw in A2 Stainless
WF2553
£0.00
M4 x 25mm Socket Head Csk (Allen) Screw in A2 Stainless
WF2554
£0.00
M4 x 30mm Socket Head Csk (Allen) Screw in A2 Stainless
WF2555
£0.00
M4 x 35mm Socket Head Csk (Allen) Screw in A2 Stainless
WF2556
£0.00
M4 x 40mm Socket Head Csk (Allen) Screw in A2 Stainless
WF2557
£0.00
M4 x 50mm Socket Head Csk (Allen) Screw in A2 Stainless
WF2558
£0.00
M4 x 55mm Socket Head Csk (Allen) Screw in A2 Stainless
WF74699
£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.
technical drawing of Socket Head Countersunk Screws ISO 10642 (DIN 7991)
Technical Summary
d nominal diameter M4
thread pitch thread pitch 0.70
dk max. maximum head diameter 7.96
dk min. minimum head diameter 7.53
k max. maximum head height 2.48
k min. minimum head height 2.121
s max. maximum drive size 2.580
s min. drive min. 2.520
b minimum thread length 20
t max. maximum recess depth 1.65
t min. minimum recess depth 1.40
e width across corners 3.82
Standard ISO 10642
Material A2 Stainless Steel
all dimensions in millimetres (mm)
html graphic ISO 10642 Standard HTML
pdf graphic ISO 10642 Standard PDF