Thread Code Comparison Chart

Common Industry Standard	Alternate industry Standard	PennEngineering Thread Code	ATLAS SpinTite® Thread Code	ATLAS MaxTite® Thread Code
#0-80	.060 – 80	080	—	—
#1 – 64	.073 – 64	164	—	—
#1 – 72	.073 – 72	172	—	—
#2 – 56	.086 – 56	256	—	—
#2 – 64	.086 – 64	264	—	—
#3 – 48	.099 – 48	348	—	—
#3 – 56	.099 – 56	356	—	—
#4 – 40	.112 – 40	440	440	4
#4 – 48	.112 – 48	448	448	448
#5 – 40	.125 – 40	540	540	5
#5 – 44	.125 – 44	544	544	544
#6 – 32	.138 – 32	632	632	6
#6 – 40	.138 – 40	640	640	640
#8 – 32	.164 – 32	832	832	8
#8 – 36	.164 – 36	836	836	836
#10 – 24	.190 – 24	024	1024	1024
#10 – 32	.190 – 32	032	1032	10
#12 – 24	.216 – 24	1224	1224	12
#12 – 28	.216 – 28	1228	1228	1228
1/4 – 20	.2500 – 20	0420	420	25
1/4 – 28	.2500 – 28	0428	428	2528
5/16 – 18	.3125 – 18	0518	518	31
5/16 – 24	.3125 – 24	0524	524	3124
3/8 – 16	.3750 – 16	0616	616	37
3/8 – 24	.3750 – 24	0624	624	3724
7/16 – 14	.4375 – 14	0714	714	43
7/16 – 20	.4375 – 20	0720	720	4320
1/2 – 13	.5000 – 13	0813	813	50
1/2 – 20	.5000 – 20	0820	820	5020
5/8 – 11	.6250 – 11	1011	1011	—
5/8 – 18	.6250 – 18	1018	1018	—
3/4 – 10	.7500 – 10	1210	1210	—
3/4 – 16	.7500 – 16	1216	1216	—
M1.6 x 0.35	—	M1.6	—	—
M2 x 0.4	—	M2	—	—
M2.5 x 0.45	—	M2.5	—	—
M3 x 0.5	—	M3	350	M3
M3.5 x 0.6	—	M3.5	3560	M3.5
M4 x 0.7	—	M4	470	M4
M5 x 0.8	—	M5	580	M5
M6 x 1	—	M6	610	M6
M8 x 1.25	—	M8	8125	M8
M8 x 1	—	Special	810	Special
M10 x 1.5	—	M10	1015	M10
M10 x 1.25	—	Special	10125	Special
M10 x 1	—	Special	1010	Special
M12 x 1.75	—	M12	12175	M12
M14 x 2	—	M14	1420	M14
M16 x 2	—	M16	1620	M16