Precision Carbide and
High Speed Tools and
CNC Grinding



Solid Carbide Drill Blanks and Test Pins

Helfer supplies solid carbide drill blanks and gages. Order any size from .009 inches to 1.000 inches in diameter and up to 8-inch lengths. Both English and Metric sizes are available. Many non-standard sizes are in stock; for example, .0225, .0885 and .098 inches.

Six to ten micro finish is standard and our standard tolerance is ±.0002 inches. Tolerances of ±.0001 inches are available upon request.

We also supply the electronics industry with precision single-end and double-end test pins. Tolerances available are to + .0001 and — .0000 inches. Six to ten micro finish is standard with lengths to our customer’s specifications. All test pins conform to military specifications.

Carbide Drill Blank
Carbide Radius Test Pin

CNC Centerless Grinding


Please give Helfer Tool a call, e-mail and attach a CAD file, or fax us a print for a prompt competitive quote.


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714-557-2733 Helfer Tool Company FAX 714-557-5312
3030 Oak Street, Santa Ana, CA 92707

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