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BS 450 - 1958

Recessed 90° Raised-Countersunk Head Screws with B.S.W. & B.S.F. Threads [Table 3]

BS 450 - 1958 英制十字槽半沉头螺钉 - B.S.W. & B.S.F. 螺纹 [Table 3]

See all versions and complete specifications: Recessed 90° Raised-Countersunk Head Screws with B.S.W. & B.S.F. Threads [Table 3] — Full Specification Page

Dimensional Specifications — BS 450 - 1958 (mm)

Size	P	e	r	k_max	k_min	s_max	s_min	ds_max	ds_min	k_nominal	ds_nominal
1/4	0.3750	0.254	0.394	0.656	0.624	16	20	0.080	4	0.712	0.169
1/8	0.1875	0.137	0.197	0.328	0.307	24	32	0.040	2	0.356	0.084

Related Standards

GB /T 820 - 2015— Raised Countersunk Head Screws with Cross Recess GB /T 820 - 2000— Raised Countersunk Head Screws (Common Head Style) with Cross Recess GB /T 13806.1 (C) - 1992— Cross Recessed Raised Countersunk Head Screws for Fine Mechanics GB 820 - 1985— Cross Recessed Raised Countersunk Head Screws GB 974 - 1976— 120° Cross Recessed Raised Countersunk Screws DIN 966 - 1990— Cross Recessed Raised Countersunk Head Screws DIN 6929 (NE) - 2013— Raised Countersunk Head Screws ISO 7047 - 2011— Rasied Countersunk Head Screws(Common Head Style) ，Grade A

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