SP-29 JOBBER BIT SET 1/16-1/2

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SP-29 JOBBER BIT SET 1/16-1/2
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29 pieces. Fractional. Special Hi-Molybdenum tool steel. 135 split point for fast penetration and accurate starting without a center punch. Precision ground point, flutes, body, clearance and drill diameter for the ultimate in accuracy and performance. Body and clearance are gold surface treated for maximum lubricity. Drills are heat treated at 2185 F and then nitro-carburize finished at 950 F to be measurably harder than high-speed steel. Space age nitro-carburized steel withstands substantially higher drilling temperatures while maintaining sharpness. Recommended for use in work hardening grades of stainless steel and other hard metal drilling applications. Type 190-AG, Manufactured to NAS 907B specification. Made in USA.

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$84.99

NOR44150




1/16-1/2 by 64ths