Left Edge

Thread Depths

Standard Thread Sizes

  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.
Right Edge