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M2 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 M2
thread pitch thread pitch 0.40
dk max. maximum head diameter 4.09
dk min. minimum head diameter 3.70
k max. maximum head height 1.350
k min. minimum head height 1.130
s max. maximum drive size 1.360
s min. drive min. 1.320
b minimum thread length -
t max. maximum recess depth 0.85
t min. minimum recess depth 0.75
e width across corners 1.454
Standard ISO 10642
Material A2 Stainless Steel
all dimensions in millimetres (mm)
html graphic ISO 10642 Standard HTML
pdf graphic ISO 10642 Standard PDF
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technical drawing of Socket Head Countersunk Screws ISO 10642 (DIN 7991)
Technical Summary
d nominal diameter M2
thread pitch thread pitch 0.40
dk max. maximum head diameter 4.09
dk min. minimum head diameter 3.70
k max. maximum head height 1.350
k min. minimum head height 1.130
s max. maximum drive size 1.360
s min. drive min. 1.320
b minimum thread length -
t max. maximum recess depth 0.85
t min. minimum recess depth 0.75
e width across corners 1.454
Standard ISO 10642
Material A2 Stainless Steel
all dimensions in millimetres (mm)
html graphic ISO 10642 Standard HTML
pdf graphic ISO 10642 Standard PDF
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