Kyocera - Монолитный осевой инструмент 2016 ENG
для заказа - kyocera@kyocera-tools.ru TAP DIMENSIONS
TAPS ENGINEERING DATA
SPECIAL EXTENSION TAPS
Ground Thread
(Ref. USCTI Table 303-A)
DRILLS
END MILLS
ROUTERS Unless otherwise specified, special extension taps will be furnished with dimensions and tolerances as shown for Machine
Screw and Fractional taps in Tables 302 and 303, and for Pipe taps in Table 311.
THREAD MILLS
& TAPS Exceptions:
1. Types of centers are optional with manufacturer.
2. Tolerances on shank diameter d1 for I4 lengh as shown in the following table.
3. Shank eccentricity tolerance in Table 317 applies only to the I4 length shown in the following table.
4. Length of Close Tolerance Shank, (L4) is minimum.
ENGRAVERS Nominal Tap Size Thread Shank Square Size of Ground Shank
Length Dia. Length Square Length
Fractional Machine d1 l4
Screw l l2 0.110
0.141 0.131 1.13
-6 0.688 0.168 0.188 0.152 1.25
0.750 0.194 0.250 0.191 1.38
BORING BARS -8 0.875 0.255 0.250 0.138 1.50
1.000 0.185 0.313 0.238 Full Length
- 10 - 1 2 1.000 0.318 0.250 0.180 1.56
1.130 0.240 0.375 0.286 Full Length
1/4 14 1.130 0.381 0.281 0.206 1.63
1.250 0.275 0.438 0.242 Full Length
1/4* - 1.250 0.323 0.375 0.275 1.69
1.440 0.367 0.406 0.322 1.69
5/16 - 1.660 0.429 0.438 0.360 1.88
1.660 0.480 0.500 0.442 2.00
5/16* - 1.810 0.590 0.563 0.523 2.25
2.000 0.697 0.688 0.600 2.50
REAMERS 3/8 - 2.220 0.800 0.750 0.672 2.63
2.500 0.896 0.813 0.766 2.75
3/8* - 2.560 1.021 0.875 0.831 2.88
2.560 1.108 1.000 0.925 3.00
7/16 - 3.000 1.233 1.063 3.00
3.000 1.125
1/2 -
9/16 -
SAWS 5/8 -
3/4 -
7/8 -
1-
TECHNICAL 1-1/8 -
1-1/4 -
1-3/8 -
1-1/2 -
* Small Shank
INDEX Tolerances
for Shank Diameter, d1 and l4 length
Size Range Direction Tolerance
(in)
Fractional Machine Screw Minus
Minus 0.003
1/4 to 5/8 incl. 0 - 14 incl.
0.004
11/16 to 1-1/2 incl.
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