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BS 1981 - 1991

Square Screw Nuts

BS 1981 - 1991 无倒角四方薄螺母 table20

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Dimensional Specifications — BS 1981 - 1991 (mm)

Size	P	k_max	k_min	s_max	s_min	k_nominal
0#	64	0.05	0.043	72	0.156	0.15
2#	40	0.114	0.102	44	0.312	0.302
4#	24	0.161	0.148	28	0.437	0.423
5#	18	0.225	0.208	24	0.562	0.545
6#	16	0.257	0.239	24	0.625	0.607
(1#)	48	0.066	0.057	56

Related Standards

GB 39 - 1988— Square Nuts - Product Grade C GB /T 2153 - 1991— Rhombic Nut DIN 562 - 2013— Square Thin Nuts, Product Grade B DIN 557 - 1994— Square Nuts-Product Grade C DIN 562 - 1987— Square Thin Nuts, Product Grade B DIN 557 - 1985— Square Nuts-Product Grade C DIN 798 - 2009— Special Foundation Nuts DIN 798 - 1972— Special Foundation Nuts for Special Foundation Bolts According to DIN 797 JIS B 1163 - 2009

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