для заказа - kyocera@kyocera-tools.ru TAP DIMENSIONS
TAPS ENGINEERING DATA
TAPER PIPE TAP / THREAD LIMITS DRILLS
Ground Thread
(Ref. USCTI Table 338)
• American National Standard Taper Pipe Thread Form (NPT)
• Aeronautical National Taper Pipe Thread Form (ANPT)
• Dryseal American National Standard Taper Pipe Thread Form (NPTF)
END MILLS
ROUTERS
Tap Thread Limits THREAD MILLS
& TAPS
Nominal Threads Projection* Projection Taper Per Foot Length Tap Drill Size **
Size Per Inches Tolerance Limits L1 NPT, ANPT, NPTF
Inch
Inches + or - MIN MAX 0.1600 C
27 0.1615 Q
1/16 27 0.3120 0.0630 0.7190 0.7810 0.2278 7/16 ENGRAVERS
1/8 18 0.3120 0.0630 0.7190 0.7810 0.2400 9/16
1/4 18 0.4590 0.0630 0.7190 0.7810 0.3200 45/64 BORING BARS
3/8 14 0.4540 0.0630 0.7190 0.7810 0.3390 29/32
1/2 14 0.5790 0.0630 0.7190 0.7810 0.4000 1-9/64 REAMERS
3/4 11-1/2 0.5650 0.0630 0.7190 0.7810 0.4200 1-31/64
1 11-1/2 0.6780 0.0940 0.7190 0.7810 0.4200 1-23/32
1-1/4 11-1/2 0.6860 0.0940 0.7190 0.7810 0.4360 2-3/16
1-1/2 11-1/2 0.6990 0.0940 0.7190 0.7810 0.6820 2-39/64
8 0.6670 0.0940 0.7190 0.7810 0.7660 3-15/64
2 8 0.9250 0.0940 0.7340 0.7810 0.8210 -
2-1/2 8 0.9250 0.0940 0.7340 0.7810 0.8440 -
8 0.9380 0.1250 0.7340 0.7810
3 0.9500 0.1250 0.7340 0.7810
3-1/2
4
NOTES SAWS
* Distance small end of tap projects throught L1 Taper Thread Ring Gage.
** Recommended size given permit direct tapping without reaming the hole, but only give a full thread for approx. the L1 length. TECHNICAL
LEAD TOLERANCE
A maximum lead deviation of plus or minus .0005” within any two threads not farther than 1” is permitted.
INDEX
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