Product Detail

Countersink

Name: Fastener Heads Must Clear a Flush Gauge Check
Brand: XRZ Precision

Carbide countersinks for screw/rivet head seats that must gauge flush—not general deburr.

Screw / rivet head seats

82° and 90° fastener seats that must gauge flush

Countersink tools exist so fastener heads sit flush to a screw standard. If the print only says “break edges,” you want a chamfer mill. If the print shows a countersink symbol tied to a screw, stay on this page.

RFQ screw standard + pilot Edge-break chamfer mill

Carbide countersink for fastener seats — Fastener countersink seats gauged to screw standards.

Seat acceptance basics

Head angle from the screw / rivet standard
Major diameter and depth to flush/subflush
Pilot hole already sized?
Gauge or go/no-go notes if used on the line

Countersink intake

Fastener standard or angle + Ø
Pilot Ø; depth to seat
Material being seated
Chatter or angle-miss history

Countersink FAQ

Only a 45° deburr?

That is chamfer mill territory.

Aluminum PCD hole-edge?

PCD chamfer & spotface for Al mouths.

Screw standard listed?

Countersink RFQs start from fastener seat geometry.

Submit RFQ