550 NAS-Type Heavy-Duty Cobalt Straw Jobber-Length Drill Bit 0.2280 in dia Cutting 3.875 in OAL #1 Wire

Product Description

Manufactured to NAS 907 Type J geometry aerospace specifications. Heavy-duty construction for drilling in tough, high-tensile, and work-hardening materials. Manufactured from premium cobalt high-speed steel. Straw finish adds lubricity and easily identifies cobalt drills. 135?? P3 split point is self-centering for reduced thrust and easier penetration. Sizes smaller than 0.0625 inch do not have split point.

Specifications

Type Style 550
Point Shape Split
Overall Length [Nom] 3.875 in
Material HSS-CO 8% (M42)
No. of Flutes 2
Point Angle 135?? RHS/RHC
Cutting Diam [Nom] 0.2280 in
Finish Straw
Bit Length 3.875 in
SKU Group Auto-Id 219972
Dia. [Nom] #1 Wire
Flute Length 2.625 in
Applicable Materials Alloy Steel; Stainless Steel; Titanium; Tool Steel
Coating Straw
Shank Type Straight
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