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Tapping Home > Tapping > UNIFIED THREAD TAPS > BLUE RING TAPS
Spiral Point Tap Plug Style for Steels & Stainless Steels - N4 / O5 SERIES

Size T.P.I EDP No. Limit Overall Length Thread Length Neck Length Shank Diameter Square Size Square Length No. of Flute
D1 Steam Oxide Hardslick L2 L1 L3 D2 K Kl
#2 56UNC N4082 O5082 H2 1.752 0.256 0.433 0.141 0.110 0.190 2
#4 40UNC N4162 O5162 H2 2.205 0.335 0.563 0.141 0.110 0.190 2
#5 40UNC N4202 O5202 H2 2.205 0.374 0.626 0.141 0.110 0.190 3
#6 32UNC N4243 O5243 H3 2.205 0.413 0.689 0.141 0.110 0.190 3
#8 32UNC N4283 O5283 H3 2.480 0.453 0.752 0.168 0.131 0.250 3
#10 24UNC N4323 O5323 H3 2.756 0.531 0.906 0.194 0.152 0.250 3
#10 32UNF N4343 O5343 H3 2.756 0.531 0.906 0.194 0.152 0.250 3
1/4 20UNC N4403 O5403 H3 3.150 0.591 1.000 0.255 0.191 0.310 3
1/4 20UNC N4405 O5405 H5 3.150 0.591 1.000 0.255 0.191 0.310 3
1/4 28UNF N4423 O5423 H3 3.150 0.591 1.000 0.255 0.191 0.310 3
5/16 18UNC N4445 O5445 H5 3.543 0.669 1.126 0.318 0.238 0.380 3
5/16 24UNF N4464 O5464 H4 3.543 0.669 1.126 0.318 0.238 0.380 3
3/8 16UNC N4485 O5485 H5 3.937 0.748 1.252 0.381 0.286 0.440 3
3/8 24UNF N4504 O5504 H4 3.937 0.748 1.252 0.381 0.286 0.440 3
7/16 14UNC N4525 O5525 H5 3.937 0.866 1.437 0.323 0.242 0.410 3
7/16 20UNF N4545 O5545 H5 3.937 0.866 1.437 0.323 0.242 0.410 3
1/2 13UNC N4565 O5565 H5 4.331 0.984 1.657 0.367 0.275 0.440 3
1/2 20UNF N4585 O5585 H5 3.937 0.984 1.657 0.367 0.275 0.440 3
9/16 12UNC N4605 O5605 H5 4.331 0.984 1.657 0.429 0.322 0.500 3
9/16 18UNC N4625 O5625 H5 3.937 0.984 1.657 0.429 0.322 0.500 3
5/8 11UNC N4645 O5645 H5 4.331 1.083 1.811 0.480 0.360 0.560 3
5/8 18UNF N4665 O5665 H5 3.937 1.083 1.811 0.480 0.360 0.560 3
3/4 10UNC N4705 O5705 H5 4.921 1.201 2.000 0.590 0.442 0.690 3
3/4 16UNF N4725 O5725 H5 4.331 1.201 2.000 0.590 0.442 0.690 3
7/8 9UNC N4746 O5746 H6 5.512 1.339 2.224 0.697 0.523 0.750 3
7/8 14UNF N4766 O5766 H6 4.921 1.339 2.224 0.697 0.523 0.750 3
1 8UNC N4786 O5786 H6 6.299 1.496 2.500 0.800 0.600 0.810 3
1 12UNC N4806 O5806 H6 5.512 1.496 2.500 0.800 0.600 0.810 3
1-1/8 8UN N4836 O5836 H6 7.087 1.575 2.638 0.896 0.672 0.880 4
1-1/4 8UN N4876 O5876 H6 7.087 1.575 2.638 1.021 0.766 1.000 4
1-3/8 8UN N4916 O5916 H6 7.874 1.654 2.953 1.108 0.831 1.060 4
1-1/2 8UN N4956 O5956 H6 7.874 1.654 2.953 1.233 0.925 1.130 4
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