GUHRING - Каталог Метчики - 2011 EN
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5NIVERSAL!PPLICATIONS
!LLOYED5NALLOYED3TEELS
UNC ANSI length - ANSI shank
H7 / H11 Series 3980 - Cobalt, UNC, 40° helix, TiN coated, H7 tolerance
Tolerance
Cut Taps Size No. Shank dia. Square Size Overall Actual Series Order
Blind Hole 6-32 Length H7
40° Helix 8-32 Flutes inch inch 3980 No.
10-24 3 0.141 0.110 inch Limits z 3.505
Chamfer Lead 12-24 3 0.168 0.131 2.000 H7 z 4.166
1/4-20 3 0.194 0.152 2.130 H7 z 4.826
5/16-18 3 0.220 0.165 2.382 H7 z 5.486
3/8-16 3 0.255 0.191 2.382 H7 z 6.350
7/16-14 3 0.318 0.238 2.500 H7 z 7.938
1/2-13 3 0.381 0.286 2.720 H7 z 9.525
5/8-11 3 0.323 0.242 2.941 H7 z 11.113
3 0.367 0.275 3.157 H7 z 12.700
4 0.480 0.360 3.381 H7 z 15.875
3.811 H7
C · 2-3 ANSI length - ANSI shank
Series 3984 - Cobalt, UNC, 40° helix, TiN coated, H11 tolerance
Size No. Shank dia. Square Size Overall Actual Series Order
6-32 Length H11
8-32 Flutes inch inch 3984 No.
10-24 3 0.141 0.110 inch Limits z 3.505
12-24 3 0.168 0.131 2.000 H11 z 4.166
1/4-20 3 0.194 0.152 2.130 H11 z 4.826
5/16-18 3 0.220 0.165 2.382 H11 z 5.486
3/8-16 3 0.255 0.191 2.382 H11 z 6.350
7/16-14 3 0.318 0.238 2.500 H11 z 7.938
1/2-13 3 0.381 0.286 2.720 H11 z 9.525
5/8-11 3 0.323 0.242 2.941 H11 z 11.113
3 0.367 0.275 3.157 H11 z 12.700
4 0.480 0.360 3.381 H11 z 15.875
3.811 H11
TECH TIP: Oversized taps
Oversized Taps are taps that are typically +0.003”/+0.005” larger than standard pitch diameter. An
H7 thread limit tap is +0.003” oversize from the basic pitch diameter while an H11 thread limit tap
is +0.005” oversize. Typically, oversized taps are used for threading parts that will be subsequently
plated or heat treated after tapping.
58 Bright Steam Oxide TiN TiCN MolyGlide TiAlN AlCrN FIREX®
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