Tapped Thru (Min.) Blind Tap Depth
Thread Size Alumnim
Brass
Steel
Nylon
Stainless Steel Aluminum
Brass
Stainless Steel
Steel
Nylon
0-80 3/8 1/4 3/16
1-64 & 1-72 3/8 1/4 3/16
2-56 & 2-64 5/8 3/8 3/16
3-48 & 3-56 3/4 3/8 3/16
4-40 & 4-48 1 1/2 1/4
5-40 & 5-44 1 1/2 5/16
6-32 & 6-40 1 1 3/8
8-32 & 6-40 1 1 7/16
10-24 & 10-32 1 1 1/2
12-24 & 12-28 1 1 1/2
1/4-20 & 1/4-28 1 1 5/8
5/16-18 & 5/16-24 1 1 5/8
3/8-16 & 3/8-24 1 1 5/8
7/16-14 & 7/16-20 1 1 5/8
1/2-13 & 1/2-20 1 1 5/8
Notes
  1. Blind Tap Depth per Handbook H-28, Part 1, Screw Thread Standards for Federal Services.
  2. For longer lengths of internal threads of greater Blind Tap Depths, contact Lyn-Tron, Inc.
Tapped Thru (Min.) Blind Tap Depth
Thread Size Alumnim
Brass
Steel
Nylon
Stainless Steel Aluminum
Brass
Stainless Steel
Steel
Nylon
M1.6x0.35 9.5 6.4 4.8
M2.0x0.4 9.5 6.4 4.8
M2.5x0.45 15.9 9.5 4.8
M3.0x0.5 25.4 12.7 6.4
M3.5x0.6 25.4 25.4 9.5
M4.0x0.7 25.4 25.4 11.1
M5.0x0.8 25.4 25.4 12.7
M6.0x1 25.4 25.4 16.0
M8.0x1.25 25.4 25.4 16.0
Notes
  1. Minimuim Blind Tap Depths for short parts will be governed by the part body lenght.
  2. For longer lengths of internal threads of greater Blind Tap Depths, contact Lyn-Tron, Inc.
  3. No thread relief will be provided on longer than standard male threads.



Thread SizeCodeThread SizeCode
0-800080M1.6 x 0.351635
1-640164M2.0 x 0.42040
1-7201721/4-202520
2-5602561/4-282528
2-640264M2.5 x .0452545
3-480348M3.0 x 0.53050
3-5603565/16-183118
4-4004405/16-243124
4-480448M3.5 x 0.63560
5-4005403/8-163716
5-4405443/8-243724
6-320632M4.0 x 0.74070
6-4006407/16-144314
8-3208327/16-204320
8-3608361/2-135013
10-2410241/2-205020
10-321032M5.0 x 0.85080
12-241224M6.0 x 1.06010
12-281228M8.0 x 1.258125

SHANK LENGTHS

Standard Panel ThicknessStandard Shank LengthCodeMetric Panel ThicknessMetric Shank Length
1/320.075A0.81.9
1/640.037AA  
1/160.105B1.62.7
3/320.135C2.43.4
1/80.165D3.24.2
3/160.23E4.85.8
1/40.29F6.47.4
1/320.062H  
1/160.094I  
3/320.125J  
1/80.156K  
3/160.219L  
1/40.281M  








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