BS 4174 11

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80° Recess truncated countersunk head screws, ...Information restricted to registered users: Login | Register now for a 14 day free trial

Dimensions in mm - source BS 4174 Table 11 80° Recess truncated countersunk head screws, type Z: Publication date: 10 - 1972
Ø thread size	dk min	dk max	k min	k max	t min	t max	m nom	recess nr.
ST 2.2	3.73	4.37	0.71	0.91	1.02	1.42	2.21	1
ST 2.9	4.95	5.71	0.96	1.19	1.57	1.98	2.77	1
ST 3.5
ST 4.2
ST 4.8
ST 5.5
ST 6.3
ST 8

Reproduced by permission of DIN Deutsches Institut für Normung e. V. The definitive version for the implementation of this standard is the edition bearing the most recent date of issue, obtainable from Beuth Verlag GmbH, Burggrafenstraße 6, 10787 Berlin, Germany.
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Standard BS 4174 11