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88-piece set of 1/4-20 stainless steel rivet nuts in a storage case

Vifmy RN-01 1/4-20 Rivet Nut Set 88pcs 304 Stainless Steel

SKU CH-ET2P-MB5WM

A set of 88 flat-head 1/4-20 UNC rivet nuts in 304 stainless steel with knurled bodies for secure installation in metal

  • Fit and compatibilityRN-01, Vifmy
  • Main materialSteel
  • Sold asSet
  • Number of items12 pack
  • 304 stainless steel resists corrosion for long service life
  • Knurled body with deep threads prevents spin-out during installation
  • 88-piece set covers multiple 1/4-20 UNC fastening needs
  • 8 mm drill size and 15 mm length suit standard metal plate thickness
  • Lightweight inserts reduce overall assembly weight versus traditional bolts

Product Identity

The Vifmy RN-01 kit supplies 88 pieces of 1/4-20 UNC rivet nuts made from 304 stainless steel. It targets technicians and fabricators who need blind fasteners for sheet-metal assemblies in automotive, aviation, railway or general light-industrial work. Buyers requiring metric threads or larger SAE sizes must look elsewhere.

Critical Specification

Each insert uses a 1/4-20 UNC thread and requires an 8.8 mm drill hole. The overall length is 15 mm. Matching these three figures to the parent material thickness and hole size is the only way to confirm fit.

Installation Notes

The knurled body and flat head with deep threads resist rotation during setting and simplify alignment. A rivet-nut tool matched to 1/4-20 UNC is required; hand-tightening alone will not achieve clamp load. Over-drilling the 8.8 mm hole or using the wrong mandrel size are the most common causes of spin-out or stripped threads.

How it compares

Measured against everything we stock in Workshop Hardware, Springs & Clamps, at today’s prices. Recalculated every night.

Price $14.99
Cheaper than about 65% of the 383 comparable items (median $17.99).

Specifications

Product
Brand nameVifmy
Part numberRN-01
Size & build
Main materialSteel
Compatibility
Fit and compatibilityRN-01, Vifmy
In the box
Number of items12 pack

Questions about this item

How does the 1/4-20 UNC thread size work once the rivet nut is installed in a machine?

The 1/4-20 UNC threads accept standard SAE bolts, giving a permanent load-bearing female thread in metal plates or tubes where tapping is impractical.

What does the 8.8 mm drill-hole requirement cap in practice?

It limits use to panels thick enough to accommodate the 15 mm overall length and hard enough to hold the knurled body without pull-through.

What physical clearance does the flat-head design need to sit flush?

The flat head requires a countersunk or flat surface so the 15 mm long body seats fully without protrusion.

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