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BS 1981 - 1991

Recessed Truncated Countersunk Head Screws:short Length

BS 1981 - 1991 米字槽沉头螺钉（短的）Table 7

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Dimensional Specifications — BS 1981 - 1991 (mm)

Size	P	k_max	k_min	s_max	s_min	ds_max	k_nominal	ds_nominal
2#	0.199	1	0.094	0.171	0.042	0.043	0.033	0.053
4#	0.332	2	0.166	0.292	0.07	0.073	0.058	0.091
5#	0.438	3	0.225	0.389	0.092	0.082	0.078	0.1
6#	0.635	4	0.309	0.568	0.134	0.127	0.116	0.145
8#	0.812	4	0.385

Related Standards

GB /T 819.1 - 2016— Countersunk Flat Head Screws (Common Head Style) with Cross Recess - Part 1: Property Class 4.8 GB /T 819.2 - 2016— Countersunk Flat Head Screws with Cross Recess - Part 2: Property Class 8.8, Stainless Steel Screws and Non-ferrous Metal Screws GB /T 819.1 - 2000— Countersunk Flat Head Screws (Common Head Style) with Cross Recess - Part 1: Property Class 4.8 GB /T 819.2 - 1997— Cross Recessed Countersunk Flat Head Screws (Common Head Style) - Grade A - Part 2: Steel of Property Class 8.8, Stainless and Non-Ferrous Metals GB /T 13806.1 (B) - 1992— Cross Recessed Countersunk Screws for Fine Mechanics GB 819 - 1985— Cross Recessed Countersunk Head Screws GB 819 - 1976— Cross Recessed Countersunk Head Screws

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