#25 Aircraft Extension Drill Bit 6" Overall Length HSS Made in USA
#25 x 6" Long Aircraft Extension Drill
High Speed Steel
1-7/8" Flute Length
.1495 Decimal Equiv
Drill America
Product Detailed Description
#25 Aircraft Extension Drill Bit, 6" Overall Length
This Number 25 American Made Aircraft Extension Drill Bit is surface treated and manufactured to National Aerospace Standard 907. 135 degree split point is self-centering and reduces thrust. Ideal for drilling in mild steels where extra length for reach is required. They have a black oxide surface treatment that is abrasion-resistant, reduces chip welding and improves chip flow. Sizes smaller than #52 and 1/16" have the 118 degree standard point.
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