TAP HOLDER
DRILL TAPPER TAPPING RANGE: No. 8 - 2" Quick-change system for drilling and tapping. Two operations with one head! • Automatic torque limiter built into each Drill Tapper • Built-in safety clutch and exclusive tap holders assuresafe tapping • No need to adjust torque for tapping blind or through holes
• Stable tapping is assured by simple but efficient cross tapping prevention system • Excellent durability is achieved by utilizing the largest possible contact area • Made with the finest quality material with a hardness of HRC 63, and ground clutch keys • After long periods of use, the original torque can easily be restored by replacement of the clutch keys and torque rubbers
CONSTRUCTION OF SAFETY CLUTCH
AT NORMAL TORQUE
Clutch Key Body
Adjusting Ring
Torque Rubber
Clutch Key
Adjusting Ring
Body
Tap Holder
Clamp Ring O-Ring
AT OVER-TORQUE
Adjusting Ring
Torque Rubber
Hollow Screw
Clutch Key
Body
Tap Holder
Torque Rubber Spring Steel Ball
Unified & American National Thread
ANPT, NPT & NPTP
Size
ød
E
Size
ød
E
Size
ød
E
Size
ød
E
NO.8
.168 .194 .220 .255 .318 .381 .323 .367
.131 .152 .165 .191 .238 .286 .242 .275
AU9/16
0.429
.322 .360 .406 .442 .482 .523 .570 .600
AU1.1/8 AU1.1/4 AU1.3/8 AU1.1/2 AU1.5/8 AU1.3/4 AU1.7/8
.896
.672 .766 .831 .925 .979
AP1/8 AP1/4 AP3/8 AP1/2 AP3/4
.438 .563 .700 .688 .906
.328 .421 .531 .515 .679 .843 .984
NO.10 NO.12 AU1/4 AU5/16
AU5/8
.480 .542 .590 .652 .697 .760 .800
1.021 1.108 1.233 1.305 1.430 1.519 1.644
AU11/16
AU3/4
AU13/16
AU3/8
AU7/8
1.072 1.139 1.233
AP1
1.125 1.313 1.500
AU7/16
AU15/16
AP1.1/4 AP1.1/2
AU1/2
AU1
AU2
1.125
ød=Diameter of shank E=Size of square
2
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