This product is regulated by the following standards:

ASME B18.2.2 TABLE 2 ASME B18.2.2 TABLE 1-1 ASME B18.2.2 TABLE 8

Technical data Send your request for quotation

Square nuts, square machined nuts and heavy square nuts, inch series

This product is regulated by the following standards:

Standard ASME B18.2.2 TABLE 2

Square nutsInformation restricted to registered users: Login | Register now for a 14 day free trial

Dimensions in inches (1 inch=25.4 mm) source ASME B18.2.2 2010 table 2 Square Nuts Publication date: 2010
d Thread size		UNC (nr of threads x inch)	UNF (nr of threads x inch)	F basic	G min	G max	H min	H max
inch	mm	UNC (nr of threads x inch)	UNF (nr of threads x inch)	F basic	G min	G max	H min	H max
1/4	6.35	20	28	0.438	0.554	0.619	0.203	0.235
5/16
3/8
7/16
1/2
5/8
3/4
7/8
1
1-1/8
1-1/4
1-3/8
1-1/2

Standard ASME B18.2.2 TABLE 1-1

Square and hex machine screw nutsInformation restricted to registered users: Login | Register now for a 14 day free trial

Dimensions in inches (1 inch=25.4 mm) source ASME B18.2.2 table 1-1 Publication date: 2010
Nominal size or basic thread diameter		UNC (nr of threads x inch)	UNF (nr of threads x inch)	F basic	G min	G max	H min	H max	G1 min	G1 max
inch	mm	UNC (nr of threads x inch)	UNF (nr of threads x inch)	F basic	G min	G max	H min	H max	G1 min	G1 max
0 (0.060)	1.52	-	80	0.156	0.206	0.221	0.043	0.050	0.171	0.180
1 (0.073)
2 (0.086)
3 (0.099)
4 (0.112)
5 (0.125)
6 (0.138)
8 (0.164)
10 (0.190)
12 (0.216)
1/4 (0.250)
5/16 (0.312)
3/8 (0.375)

Standard ASME B18.2.2 TABLE 8

Square nuts heavy seriesInformation restricted to registered users: Login | Register now for a 14 day free trial

Dimensions in inches (1 inch=25.4 mm) source ASME B18.2.2 table 8 square heavy nuts Publication date : 2010
d Thread size		UNC (nr of threads x inch)	UNF (nr of threads x inch)	F basic	G min	G max	H basic	H min	H max
inch	mm	UNC (nr of threads x inch)	UNF (nr of threads x inch)	F basic	G min	G max	H basic	H min	H max
1/4	6.35	20	28	0.500	0.640	0.707	1/4	0.218	0.266
5/16
3/8
7/16
1/2
5/8
3/4
7/8
1
1-1/8
1-1/4
1-3/8
1-1/2

Square nuts, square machined nuts and heavy square nuts, inch series

Dimensions in inches (1 inch=25.4 mm) source ASME B18.2.2 2010 table 1-1 Square machine screw nuts. table 2 square nuts. table 8 square heavy nuts
d Thread size		UNC (nr of threads x inch)	UNF (nr of threads x inch)	Square machine nuts table 1-1			Square nuts table 2			Heavy square nuts table 8
inch	mm	UNC (nr of threads x inch)	UNF (nr of threads x inch)	F basic	G min	H nom	F basic	G min	H basic	F basic	G min	H nom
0	1.52	-	80	0.156	0.206	0.047	-	-	-	-	-	-
1	1.85	64	72	0.156	0.206	0.047	-	-	-	-	-	-
2	2.18	56	64	0.188	0.247	0.062	-	-	-	-	-	-
3	2.51	48	56	0.188	0.247	0.062	-	-	-	-	-	-
4	2.84	40	48	0.25	0.331	0.093	-	-	-	-	-	-
5	3.18	40	44	0.312	0.415	0.108	-	-	-	-	-	-
6	3.51	32	40	0.312	0.415	0.108	-	-	-	-	-	-
8	4.17	32	36	0.344	0.456	0.124	-	-	-	-	-	-
10	4.83	24	32	0.375	0.497	0.124	-	-	-	-	-	-
12	5.49	24	28	0.438	0.581	0.155	-	-	-	-	-	-
1/4	6.35	20	28	0.438	0.581	0.186	0.438	0.554	0.219	0.5	0.64	0.25
5/16	7.94	18	24	0.562	0.748	0.217	0.562	0.721	0.266	0.562	0.72	0.313
3/8	9.53	16	24	0.625	0.833	0.248	0.625	0.802	0.328	0.688	0.889	0.375
7/16	11.11	14	20	-	-	-	0.75	0.97	0.375	0.75	0.97	0.438
1/2	12.70	13	20	-	-	-	0.812	1.052	0.438	0.875	1.137	0.5
9/16	14.29	12	18	-	-	-	-	-	-	-	-	-
5/8	15.88	11	18	-	-	-	1	1.3	0.547	1.062	1.386	0.625
3/4	19.05	10	16	-	-	-	1.125	1.464	0.656	1.25	1.635	0.75
7/8	22.23	9	14	-	-	-	1.312	1.712	0.766	1.438	1.884	0.875
1	25.40	8	12	-	-	-	1.5	1.961	0.875	1.625	2.132	1
1-1/8	28.58	7	12	-	-	-	1.688	2.209	1	1.812	2.381	1.125
1-1/4	31.75	7	12	-	-	-	1.875	2.458	1.09	2	2.631	1.25
1-3/8	34.93	6	12	-	-	-	2.062	2.708	1.203	2.188	2.879	1.375
1-1/2	38.10	6	12	-	-	-	2.25	2.956	1.313	2.375	3.128	1.5

Full list of Suppliers of Square nuts, square machined nuts and heavy square nuts, inch series

The sections 1-1, 2, 8 of the ASME B18.2.2 standard cover various types of square nuts, machine square nuts and heavy square nuts; recognized as National American Standard.

Italy

Buora d.p.u. S.r.l.

Founded in 1969, Buora D.P.U. is a distributor certified following ISO 9001.

The company offers the complete range of high strength fasteners, ready on stock, both coarse and fine pitches with metric and inch threads.

Distributor of prestigious brands such as UNBRAKO and NORD-LOCK, for Buora D.P.U. the service always comes first, therefore there is not minimum quantity required.

Germany