Thread Codes

		Tapped Thru (Min.)		Blind Tap Depth
Thread Size	Lyn-Tron Thread Code	Aluminum Brass Steel Nylon	Stainless Steel	Aluminum Brass Stainless Steel Steel Nylon
0-80	0080	3/8	1/4	3/16
1-64 & 1-72	0164 & 0172	3/8	1/4	3/16
2-56 & 2-64	0256 & 0264	5/8	1/4	3/16
3-48 & 3-56	0348 & 0356	3/4	3/8	3/16
4-40 & 4-48	0440 & 0448	1	1/2	1/4
5-40 & 5-44	0540 & 0544	1	1/2	5/16
6-32 & 6-40	0632 & 0640	1	1	3/8
8-32 & 8-36	0832 & 0836	1	1	7/16
10-24 & 10-32	1024 & 1032	1	1	1/2
12-24 & 12-28	1224 & 1228	1	1	1/2
1/4-20 & 1/4-28	2520 & 2528	1	1	5/8
5/16-18 & 5/16-24	3118 & 3124	1	1	5/8
3/8-16 & 3/8-24	3716 & 3724	1	1	5/8
7/16-14 & 7/16-20	4314 & 4320	1	1	5/8
1/2-13 & 1/2-20	5013 & 5020	1	1	5/8
Notes: Blind Tap Depth per Handbook H-28, Part 1, Screw Thread Standards for Federal Services. For longer lengths of internal threads of greater Blind Tap Depths, contact Lyn-Tron, Inc.

Metric Thread Sizes

		Tapped Thru (Min.)		Blind Tap Depth
Thread Size	Lyn-Tron Thread Code	Aluminim Brass Steel Nylon	Stainless Steel	Aluminim Brass Stainless Steel Steel Nylon
M1.6x0.35	1635	9.5	6.4	4.8
M2.0x0.4	2040	9.5	6.4	4.8
M2.5x0.45	2545	15.9	9.5	4.8
M3.0x0.5	3050	25.4	12.7	6.4
M3.5x0.6	3560	25.4	25.4	9.5
M4.0x0.7	4070	25.4	25.4	11.1
M5.0x0.8	5080	25.4	25.4	12.7
M6.0x1	6010	25.4	25.4	16.0
M8.0x1.25	8125	25.4	25.4	16.0
Notes: Minimuim Blind Tap Depths for short parts will be governed by the part body length For longer lengths of internal threads of greater Blind Tap Depths, contact Lyn-Tron, Inc. No thread relief will be provided on longer than standard male threads.