Made in the USA
Round Push Broaches
duMONT Minute Man® Round Broaches are designed to generate in one-pass a precision Round hole in a previously cast, drilled or reamed round hole. These Internal Hole Broaches are ideal for precise tolerances, sizing, and finish for those applications demanding precision and finish. Broaches are furnished with variable pitch teeth and available in American Standard as well as coated. A burnishing section can be furnished.
Specials: We are fully equipped to manufacture Special Round Broaches to your specifications. All standard items are available with TiN, or TiAlN coatings. Please contact factory for details.
| EDP No. |
Nominal Diameter |
Size (mm) | Tolerances (Dec. Equiv.) |
Broach Length |
Pilot Diameter** |
Drill Size |
Dimension Across Corners |
Tooth Pitch |
Length of Cut*min.-max. | Pressure Req'd for Max LOC*(lbs.) |
|---|---|---|---|---|---|---|---|---|---|---|
| 77730 | 1/4 | .2505-.2510 | 5 7/8 | .2344 | 15/64 | 1/8 - 5/32 | 5/16 - 3/4 | 840 | ||
| 77731 | 5/16 | .3130-.3135 | 5 7/8 | .2469 | 19/64 | 1/8 - 5/32 | 5/16 - 3/4 | 1050 | ||
| 77732 | 3/8 | .3755-.3760 | 6 7/8 | .3594 | 23/64 | 5/32 - 3/16 | 3/8 - 1 | 1440 | ||
| 77733 | 7/16 | .4380-.4385 | 6 7/8 | .4219 | 27/64 | 5/32 - 3/16 | 3/8 - 1 | 1680 | ||
| 77734 | 1/2 | .5005-.5010 | 8 | .4844 | 31/64 | 3/16 - 7/32 | 1/2 - 1 1/4 | 2240 | ||
| 77736 | 5/8 | .6255-.6260 | 8 1/2 | .6094 | 39/64 | 3/16 - 7/32 | 1/2 - 1 1/4 | 2500 | ||
| 77738 | 3/4 | .7505-.7510 | 9 1/8 | .7344 | 47/64 | 7/32 - 1/4 | 5/8 - 1 1/2 | 3720 | ||
| 77740 | 7/8 | .8755-.8765 | 9 1/4 | .8594 | 55/64 | 7/32 - 1/4 | 5/8 - 1 1/2 | 4340 | ||
| 77742 | 1 | 1.0005-1.0015 | 10 1/4 | .9844 | 63/64 | 1/4 - 9/32 | 5/8 - 1 3/4 | 4970 |
*based on mild steel
**tolerances-basic minus .0005-.001 inches
