BOLT THREADS & WIRE GAUGE SIZES

U.N.E.F.			U.N.F				U.N.C
Dia.	No of Thds		Dia.	No of Thds			Dia.	No of Thds
1/4 in.	32		1/4 in.	28			1/4 in.	20
5/16 in.	32		5/16 in.	24			5/16 in.	18
3/8 in.	32		3/8 in.	24			3/8 in.	16
7/16 in.	28		7/16 in.	20			7/16 in.	14
1/2 in.	28		1/2 in.	20			1/2 in.	13
9/16 in.	24		9/16 in.	18			9/16 in.	12
5/8 in.	24		5/8 in.	18			5/8 in.	11
11/16 in.	24		3/4 in.	16			3/4 in.	10
3/4 in.	20		7/8 in.	14			7/8 in.	9
13/16 in.	20		1 in.	12			1 in.	8
7/8 in.	20		1-1/8 in.	12			1-1/8 in.	7
15/16 in.	20		1-1/4 in.	12			1-1/4 in.	7
1 in.	20		1-3/8 in.	12			1-3/8 in.	6
1-1/16 in.	18		1-1/2 in.	12			1-1/2 in.	6
1-1/8 in.	18						1-3/4 in.	5
1-3/16 in.	18						2 in.	4-1/2 in.		B.S.F.
1-1/4 in.	18									Dia. Of Bolt	T.P.I
1-5/16 in.	18		B.A							(inch)
1-3/8 in.	18		No.	Dia. Of Bolt	T.P.I					7/32 in.	28
1-7/16 in.	18		(inch)							1/4 in.	26
1-1/2 in.	18		0	0.2362	25.4		B.S.W			9/32 in.	26
1-9/16 in	18		1	0.2087	28.2		Dia. Of Bolt	T.P.I		5/16 in.	22
1-5/8 in.	18		2	0.1850	31.4		(inch)			3/8 in.	20
1-11/16 in.	18		3	0.1614	34.8		1/4 in.	20		7/16 in.	18
			4	0.1417	38.5		5/16 in.	18		1/2 in.	16
			5	0.1260	43.0		3/8 in.	16		9/16 in.	16
			6	0.1102	47.9		7/16 in.	14		5/8 in.	14
			7	0.0984	52.9		1/2 in.	12		11/16 in.	14
			8	0.0866	59.1		9/16 in.	12		3/4 in.	12
			9	0.0748	65.1		5/8 in.	11		13/16 in.	12
			10	0.0669	72.6		11/16 in.	11		7/8 in.	11
			11	0.0591	81.9		3/4 in.	10		1 in.	10
			12	0.0511	90.9		13/16 in.	10		1-1/8 in.	9
			13	0.0472	102.0		7/8 in.	9		1-1/4 in.	9
			14	0.0394	109.9		15/16 in.	9		1-3/8 in.	8
			15	0.0354	120.5		1 in.	8		1-1/2 in.	8
			16	0.0311	133.3					1-5/8 in.	8

WIRE GAUGES

Wire Gauges
No. of Gauge	Imperial Standard Wire Gauge
	Inches	Millimetres
1	0.300	7.620
2	0.276	7.010
3	0.252	6.400
4	0.212	5.892
5	0.192	5.384
6	0.176	4.676
7	0.160	4.470
8	0.144	4.064
9	0.128	3.657
10	0.116	3.251
11	0.114	2.946
12	0.104	2.641
13	0.092	2.336
14	0.080	2.032
15	0.072	1.828
16	0.064	1.625
17	0.056	1.422
18	0.048	1.219
19	0.040	1.016
20	0.036	0.914
21	0.032	0.812
22	0.028	0.711
23	0.024	0.609
24	0.022	0.558
25	0.020	0.508
26	0.018	0.457
27	0.0164	0.416
28	0.0148	0.375
29	0.0136	0.345
30	0.0124	0.314
No. of Gauge	Brown & Sharpe's American Wire Gauge
	Inches	Millimetres
1	0.289	7.348
2	0.258	6.543
3	0.229	5.827
4	0.204	5.189
5	0.182	4.621
6	0.162	4.115
7	0.144	3.664
8	0.128	3.263
9	0.114	2.906
10	0.102	2.588
11	0.091	2.304
12	0.081	2.052
13	0.072	1.827
14	0.064	1.627
15	0.057	1.449
16	0.051	1.290
17	0.045	1.149
18	0.040	1.009
19	0.035	0.911
20	0.032	0.811
21	0.028	0.722
22	0.025	0.643
23	0.023	0.573
24	0.020	0.511
25	0.018	0.454
26	0.016	0.404
27	0.014	0.360
28	0.012	0.321
29	0.011	0.235
30	0.010	0.254

 

Back To Previous Page

 

HOME