Specialinsert Deform-Nut M3 Countersunk Closed-End Rivet Nut

Description

countersunk rivet nut hardware gives a blind threaded fastening point with a head profile designed to sit into a prepared countersink. This Specialinsert Deform-Nut version combines an M3 thread, 5 mm shaft diameter, 13.5 mm length, inclined knurling, closed-end construction, and stainless steel material for assemblies where the fastener face needs to stay more flush than a round-head insert.

countersunk rivet nut fit and geometry

The countersunk head is useful when the front surface must remain low, smooth, or easier to cover after installation. The inclined knurling helps the body grip the workpiece as it deforms behind the sheet. Specialinsert Deform-Nut literature describes blind rivet nuts for sheet, tubular, boxed, and profile materials where standard nut-and-bolt access is not practical.

Match the insert to the hole preparation and installed stack, not only to the metric thread. The product record lists M3 thread, 5 mm shaft diameter, 13.5 mm length, and stainless construction. Those details separate this item from similar round-head and low-profile M3 Deform-Nut parts. If the drawing does not call for a countersink, review the mating surface before substituting this style.

countersunk rivet nut ordering checks

Before release, confirm countersink angle, hole diameter, panel thickness, installation tool, and mandrel size. A blind rivet nut depends on controlled deformation behind the panel, so test installation is sensible when the substrate, finish, or panel thickness changes. Keep the insert style and thread size clearly labeled at the bench to avoid mixing M3 variants.

Specifications

For adjacent blind threaded insert options, browse rivet nuts and Deform-Nut fasteners. Specialinsert product family information is available from Specialinsert.

Need Help?

Need help confirming countersunk fit, hole prep, or thread size before release? Call (800) 220-1966 or email [email protected].