| Thread Size | 1/4" w 3/32" pilot hole- #CB2 |
|---|---|
| Brand | Maker Material Supply |
Check the listing for details. Counterbore - HSS Straight Shank - Various Sizes. Condition: New. Listed at 26.87 USD. Counterbore High speed steel straight shank Used for drilling recessed holes into scales for Corby Bolts, Gulso Bolts, screws etc. Counterbore pilots must be purchased separately. Uses a 1.5mm allen wrench. Selection Guide: Corby bolts- 3/16" uses Counterbore #CB1 with Pilot #PIL1 1/4" uses Counterbore #CB2 with Pilot #PIL2 5/16" uses Counterbore #CB3 with Pilot #PIL3 Gulso Bolts- 1/4" uses Counterbore #CB2 with Pilot #PIL5 5/16" uses Counterbore #CB3 with Pilot #PIL2 3/8" uses Counterbore #CB4 with Pilot #PIL4
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