GUHRING - Каталог Метчики - 2011 EN
для размещения заказа - guhring@guhring-tools.ru
5NIVERSAL!PPLICATIONS
!LLOYED5NALLOYED3TEELS
ANSI length - ANSI shank UNC /
UNF
Series 3988 - Cobalt, UNC, 40° helix, TiN coated, STI style tap
3B
Size No. Shank dia. Square Size Overall 3B Series Order Class of Fit Cut Taps
Length
4-40 Flutes inch inch Approx. 3988 No. STI Tap
6-32 3 0.141 0.110 inch z 2.845
8-32 3 0.194 0.152 2.000 Limits z 3.505 Blind Hole
10-24 3 0.220 0.165 2.380 H2/H3 z 4.166
1/4-20 3 0.255 0.191 2.380 H3/H4 z 4.826
5/16-18 3 0.318 0.238 2.500 H3/H4 z 6.350
3/8-16 3 0.381 0.286 2.720 H3/H4 z 7.938
1/2-13 3 0.367 0.275 2.937 H4/H5 z 9.525
4 0.480 0.360 3.381 H4/H5 z 12.700
3.810 H5/H6
H5/H6
ANSI length - ANSI shank 40° Helix
Semi-bottoming
Series 3989 - Cobalt, UNF, 40° helix, TiN coated, STI style tap Chamfer Lead
Size No. Shank dia. Square Size Overall 3B Series Order C · 2-3
Length
4-48 Flutes inch inch Approx. 3989 No.
6-40 3 0.141 0.110 inch z 2.845
8-36 3 0.168 0.131 2.000 Limits z 3.505
10-32 3 0.220 0.165 2.126 H2/H3 z 4.166
1/4-28 3 0.255 0.191 2.374 H3/H4 z 4.826
5/16-24 3 0.272 0.238 2.500 H3/H4 z 6.350
3/8-24 3 0.381 0.286 2.720 H3/H4 z 7.938
1/2-20 3 0.323 0.242 2.940 H3/H4 z 9.525
4 0.429 0.322 3.157 H3/H4 z 12.700
3.594 H5/H6
H5/H6
UNC Drill or countersink dia. UNF Drill or countersink dia.
Tap Size inch Tap Size inch
0.0906 0.0906
2-56 0.1063 2-64 0.1063
3-48 0.1220 3-56 0.1181
4-40 1.1339 4-48 0.1299
5-40 0.1496 5-44 0.1457
6-32 0.1732 6-40 0.1732
8-32 0.2047 8-36 0.2008
10-24 0.2283 10-32 0.2244
12-24 0.2638 12-28 0.2598
1/4-20 0.3307 1/4-28 0.3230
5/16-18 0.3937 5/16-24 0.3858
3/8-16 0.4567 3/8-24 0.4528
7/16-14 0.5236 7/16-20 0.5156
1/2-13 0.5906 1/2-20 0.5781
9/16-12 0.6496 9/16-18 0.6406
5/8-11 0.7776 5/8-18 0.7677
3/4-10 0.9055 3/4-16 0.8906
7/8-9 1.0312 7/8-14 1.0236
1-8 1.1614 1-12 1.1481
1 1/8-7 1.2812 1 1/8-12 1.2736
1 1/4-7 1.4173 1 1/4-12 1.3976
1 3/8-6 1.5469 1 3/8-12 1.5236
1 1/2-6 1 1/2-12
Refer to pages 142-145 for additional dimensional information
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