Geometric Style Tap Chasers
How to order...

In addition to American Standard Pipe Threads, we also manufacture tap chasers in Unified National (UN), Metric, Acme, British Pipe Tapered and British Pipe Straight. The threads on all of our tap chasers are CNC Thread Ground to provide the best product possible. It is critical that we know the material to be threaded in order to provide the proper radial or "circular" clearance. You will find our recommendations for circular clearances and cutting edge geometries in the chart below. The standard chamfer angle is 33° on regular style chasers and 45° on projection style. This chamfer angle may be changed to suit the job, since tool life will be greatly enhanced by lengthening the chamfer and spreading the cutting load over a larger area of the chaser.

RECOMMENDED TAP CHASER GEOMETRIES
HOOK ANGLES AND CIRCULAR CLEARANCES

MATERIAL HOOK ANGLE CIRCULAR CLEARANCE
Aluminum Bronze 10 Hook LOW or LC
Aluminum, Cast 20 Radial Hook LOW or LC
Bakelite 5 Snub HIGH or HC
Brass, Bar 5 Hook HIGH or HC
Brass, Cast 5 Hook HIGH or HC
Brass, Forging 10 Hook HIGH or HC
Brass Tubing 10 Hook HIGH or HC
Bronze, Cast 5 Hook HIGH or HC
Copper 20 Radial Hook MEDIUM or MC
Iron, Cast 5 Hook HIGH or HC
Iron, Gray 10 Hook HIGH or HC
Iron, Malleable 10 Hook HIGH or HC
Monel Metal 10 Hook MEDIUM or MC
Iconel 15 Hook HIGH or HC
Plastic 5 Hook HIGH or HC
     Stainless Steel...
        - 300 series 15 Radial Hook MEDIUM or MC
        - 400 series 15 Radial Hook MEDIUM or MC
Steel, Carbon 10 Hook MEDIUM or MC
Steel, Cast 10 Hook MEDIUM or MC
Steel, Forged 15 Radial Hook MEDIUM or MC
Steel, Leaded 10 Hook MEDIUM or MC
Steel Tubing 15 Radial Hook MEDIUM or MC
Steel, Tool 15 Radial Hook MEDIUM or MC
Teflon 5 Hook HIGH or HC
Titanium 15 Hook MEDIUM or MC
Zinc, Diecast 20 Radial Hook MEDIUM or MC

Phone: 586 752-5555 Fax: 800 562-7799
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