GUHRING - Каталог Метчики - 2011 EN
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5NIVERSAL!PPLICATIONS
!LLOYED5NALLOYED3TEELS
ANSI length - ANSI shank UNF
Series 3920 - Cobalt, UNF, 40° helix, bright nish 2B
Series 3923 - Cobalt, UNF, 40° helix, TiN coated Class of Fit
Series 3950 - Cobalt, UNF, 40° helix, TiCN coated
Blind Hole
Size No. Shank dia. Square Size Overall 2B Series Series Series Order 40° Helix Cut Taps
2-64 Length Semi-bottoming
3-56 Flutes inch inch Approx. 3920 3923 3950 No. Chamfer Lead
4-48 3 0.141 0.110 inch z z z 2.184
5-44 3 0.141 0.110 1.751 Limits z z z 2.515 C · 2-3
6-40 3 0.141 0.110 1.811 H2/H3 z z z 2.845
8-36 3 0.141 0.110 1.882 H2/H3 z z z 3.175
10-32 3 0.141 0.110 1.941 H2/H3 z z z 3.505
12-28 3 0.168 0.131 2.000 H2/H3 z z z 4.166
1/4-28 3 0.194 0.152 2.130 H2/H3 z z z 4.826
5/16-24 3 0.220 0.165 2.382 H2/H3 z z z 5.486
3/8-24 3 0.255 0.191 2.382 H3/H4 z z z 6.350
7/16-20 3 0.318 0.238 2.500 H3/H4 z z z 7.938
1/2-20 3 0.381 0.286 2.720 H3/H4 z z z 9.525
9/16-18 3 0.323 0.242 2.941 H3/H4 z z z 11.113
5/8-18 3 0.367 0.275 3.157 H3/H4 z z z 12.700
3/4-16 3 0.429 0.322 3.381 H4/H5 z z z 14.288
7/8-14 4 0.480 0.360 3.591 H4/H5 z z z 15.875
1-12 4 0.590 0.442 3.811 H4/H5 z z z 19.050
1 1/8-12 4 0.697 0.523 4.252 H4/H5 z z z 22.225
1 1/4-12 4 0.800 0.600 4.689 H5/H6 z z z 25.400
1 3/8-12 4 0.896 0.672 5.130 H6/H7 z z z 28.575
1 1/2-12 4 1.021 0.766 5.441 H6/H7 z z z 31.750
4 1.108 0.831 5.748 H6/H7 z z z 34.925
6 1.233 0.925 6.063 H6/H7 z z z 38.100
6.378 H6/H7
H6/H7
DIN length - DIN shank
Series 1838 - Cobalt, UNF, 40° helix, TiN coated, DIN 374, C(K) chamfer lead
Size No. Shank dia. Square Size Overall 2B DIN 374 Order
10-32 Length
12-28 Flutes mm mm Approx. Series No.
1/4-28 3 3.500 2.700 mm 4.826
5/16-24 3 4.000 3.000 70.000 Limits 1838 5.486
3/8-24 3 4.500 3.400 80.000 H3/H4 { 6.350
7/16-20 3 6.000 4.900 80.000 H3/H4 { 7.938
1/2-20 3 7.000 5.500 90.000 H3/H4 { 9.525
5/8-18 3 8.000 6.200 90.000 H3/H4 z 11.113
7/8-14 3 9.000 7.000 100.000 H3/H4 z 12.700
1-12 4 12.000 9.000 100.000 H4/H5 z 15.875
4 18.000 14.500 100.000 H4/H5 { 22.225
4 18.000 14.500 125.000 H4/H5 z 25.400
140.000 H6/H7 {
H6/H7 {
Refer to pages 142-145 for additional dimensional information
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