Click Specification

(Non-preferred) dimensions in parentheses.

Unified Hexagon Lock Nuts

BS 1768 - 1963

Display drawing:

Thread Size
d

1/4

5/16

3/8

7/16

1/2

(9/16)

5/8

3/4

s	max
s	min
m	max
m	min
e	max

0.4375	0.5	0.5625	0.6875	0.75	0.875	0.9375	1.125
0.4305	0.493	0.5545	0.6795	0.742	0.867	0.9295	1.115
0.161	0.192	0.224	0.255	0.317	0.349	0.380	0.432
0.151	0.182	0.214	0.245	0.307	0.339	0.370	0.412
0.505	0.577	0.650	0.794	0.866	1.010	1.083	1.300

Thread Size
d

7/8

1-1/8

1-1/4

(1-3/8)

1-1/2

1-3/4

s	max
s	min
m	max
m	min
e	max

1.3125	1.5	1.6875	1.875	2.0625	2.25	2.625	3
1.3005	1.488	1.6575	1.83	2.0175	2.205	2.565	2.94
0.494	0.562	0.629	0.744	0.806	0.874	0.999	1.129
0.474	0.532	0.589	0.694	0.756	0.814	0.939	1.059
1.515	1.732	1.948	2.165	2.382	2.598	3.031	3.464

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Similar Standards

1	[DIN] DIN 439 (-2) - 1987	Chamfered Hexagon Thin Nuts—Product Grades A and B View Suppliers
2	[DIN EN ISO] DIN EN ISO 4035 - 2013	Chamfered Hexagon Thin Nuts—Product Grades A and B View Suppliers
3	[DIN] DIN 936 - 1985	Hexagon Thin Nuts—Product Grades A and B,M8 to M52 and M8×1 to M52×3 View Suppliers
4	[EN] EN 24035 - 1991	Hexagon Thin Nuts - Product Grades A And B
5	[ASME] ASME B 18.2.2 - 2010	Hex Flat Jam Nuts [Table3] (SAE J995, ASTM A563, F594, F467)
6	[DIN EN] DIN EN 24035 - 1992	Hexagon thin nuts (chamfered) Product grades A and B
7	[ISO] ISO 4166 - 1979	Hexagon Nuts For Fine Mechanics—Product Grade F
8	[ASME] ASME B 18.2.4.5M - 2008	Metric Hex Thin Nuts
9	[ISO] ISO 4035 - 2012	Hexagon Thin Nuts Chamfered (Style 0) - Product Grades A and B
10	[ISO] ISO 4035 - 1999	Hexagon Thin Nuts(Chamfered)-Product Grades A and B
11	[GB] GB /T 6172.1 - 2016	Hexagon Thin Nuts（Chamfered）
12	[GB] GB 54 - 1976	Hexagon Thin Nuts
13	[BS] BS 3692 - 2001	Metric Hexagon Thin Nuts
14	[GB] GB /T 17116.3 - 2018	Hexagon Thin Nuts
15	[GB] GB 53 - 1976	Hexagon Thin Nuts
16	[BS] BS 4190 - 2014	ISO Metric Hexagon Nuts - Faced Under Head [Table 7]
17	[UNI] UNI 5589 - 1965	Lock hexagon nuts - ISO metric coarse and fine thread - Finish A
18	[BS] BS 4190 - 2001	ISO Metric Hexagon Thin Nuts - Faced Both Sides [Table 12]
19	[JIS] JIS B 1181 - 2004	Hexagon Thin Nuts [Table 6]
20	[GB] GB /T 18195 - 2000	Hexagon nuts for fine mechanics
21	[BS] BS 3692 - 2014	Metric Precision Hexagon Thin Nuts
22	[BS] BS 4190 - 2014	ISO Metric Hexagon Thin Nuts - Faced Both Sides
23	[JIS] JIS B 1181 - 2014	Hexagon Thin Nut, Chamfered, Coarse thread,【Table 22-23】
24	[GB] GB /T 6172 - 1986	Hexagon thin nuts - Product grades A and B - Chamfered
25	[BS] BS 916 - 1953	Hexagon lock Nuts with B.S.Threads - Black, Faced Both side - Black [Table 3]
26	[BS] BS 1083 - 1965	Precision Hexagon Lock Nuts - B.S.W. & B.S.F. threads
27	[UNI] UNI 5590	Hexagon low nuts, Coarse thread, Product A
28	[BS] BS 4190 - 2001	ISO Metric Hexagon Nuts - Faced Under Head [Table 12]
29	[NF] NF E 25-453 - 2001	Hexagon Thin Nuts(Chamfered)With Metric Fine Pitch Thread - Product Grades A And B
30	[NF] NF E 25-405-1 - 2001	Hexagon Thin Nuts (Chamfered) - Product A And B
31	[GB] GB /T 6172.1 - 2000	Hexagon thin nuts
32	[AS] AS 1112.4 - 2000	ISO Metric Hexagon Thin Nuts - Product Grades A And B
33	[CNS] CNS 3129 - 1998	Hexagon Thin Nuts
34	[KS] KS B 1012 (T12-13) - 2017 (R2022)	Hexagon Thin Nuts Chamfered - Product Grades A and B
35	[IS] IS 1364 (-4) - 2002	Hexagon Thin Nuts (Chamfered) (Size Range M1.6 to M64)
36	[YJT] YJT 3035	EW-N 2181 Shoulder Nuts