Rivet Size Calculator

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in
Construction

Calculate rivet grip length and nominal length for blind (pop) rivets.

Formula

Grip = material thickness; Rivet length = grip + 1.5 × diameter
  • Grip range: select a rivet whose grip range includes the material stack thickness.
  • Blind rivets: standard head forms with 1.5× diameter protrusion on back side.
  • Common blind rivet diameters: 3/32 (0.094), 1/8 (0.125), 5/32 (0.156), 3/16 (0.188), 1/4 (0.25) in.

0.25 in total material, 3/16 in rivet

Inputs
  • Total Material Thickness: 0.25 in
  • Rivet Diameter: 0.1875 in
  • Rivet Type: blind

Grip = 0.25 in. Length = 0.25 + 1.5×0.1875 = 0.531 in → use next standard size ≥ 0.531 in.

Frequently asked questions

What grip range means?
Each rivet size has a grip range (e.g. 0.25–0.375 in). Your material stack must fall within this range for the rivet to form correctly.