# Blind rivets

How one-sided rivets form a joint, how grip and hole dimensions differ, and which performance claims depend on the product.

Reviewed: 2026-10-30

Tags: components, fasteners, riveting

GESIPA's example **3.2 × 10 / 0.5–3.0** identifies **3.2 mm** body diameter, **10 mm** uninstalled body length and **0.5–3.0 mm** catalog grip. Grip is the total stack thickness. Check the actual hole, bearing face, setting access and blind-side clearance separately, then use performance data for the named rivet and joint. [GESIPA, “What Is the Grip Range for Blind Rivets?”, published June 5, 2026](https://www.gesipa.com/service/gesipa-makes-it-clear/grip-range-for-blind-rivets/).

## What a blind rivet is

A breakstem rivet sets from one side. Pulling the stem forms a second head on the blind side, then breaks the stem at its designed point. [STANLEY Engineered Fastening's POP open-end description](https://europe.en.stanleyengineeredfastening.com/fasteners/rivets/non-structural-rivets/open-end), [GESIPA's account of setting](https://www.gesipa.com/service/gesipa-makes-it-clear/blind-rivet-breaks-off/).

A rivet nut accepts a separate screw, while a blind rivet stud provides an external thread. Conventional solid rivets require access for upsetting the second head. [rivet nuts](rivet-nuts.md), [GESIPA’s blind-rivet-nut overview](https://www.gesipa.com/products/blind-rivet-nut-technology/), [solid rivets](solid-rivets.md), [SFS’s comparison of blind and solid rivets](https://us.sfs.com/learn-more/choose-right-type-rivet).

## Dimensions and joint fit

**Grip** is the combined thickness of the layers at the joint. A specified **grip range** is the minimum-to-maximum stack thickness over which a particular rivet is designed to set. **Body length** is a dimension of the uninstalled rivet; it is not itself the grip or a substitute for the manufacturer's grip range. GESIPA gives the example designation `3.2 x 10 / 0.5–3.0`: 3.2 mm body diameter, 10 mm body length and 0.5–3.0 mm grip range. The values illustrate the notation for that example, not a general size rule. [GESIPA, “What Is the Grip Range for Blind Rivets?”, published June 5, 2026](https://www.gesipa.com/service/gesipa-makes-it-clear/grip-range-for-blind-rivets/).

The **hole diameter** is a separate fit requirement. An undersized hole can prevent insertion; an oversized or poorly formed hole can affect body expansion and joint performance. GESIPA identifies incorrect hole size and misalignment as causes of setting or joint problems. [GESIPA setting and failure discussion](https://www.gesipa.com/service/gesipa-makes-it-clear/blind-rivet-breaks-off/). **Synthesis:** specified hole size, body diameter, grip range and available blind-side clearance belong to the same *part-specific* fit assessment. POP also identifies joint thickness, material, hole size/type and tool access as design variables. [POP design guidelines](https://europe.en.stanleyengineeredfastening.com/brands/pop/pop-rivet-design-guidelines).

Head form affects the bearing surface and finished profile. A dome head protrudes, a countersunk head requires a compatible countersink for a flush surface, and a large flange provides a wider bearing surface. [SFS’s head-profile comparison](https://us.sfs.com/learn-more/choose-right-type-rivet) explains these distinctions; [POP’s open-end range](https://europe.en.stanleyengineeredfastening.com/fasteners/rivets/non-structural-rivets/open-end) lists all three head forms. Their availability does not establish the correct head for a particular joint.

## Designs and bounded claims

An **open-end** breakstem rivet and a **closed-end** sealing rivet do not establish the same barrier or stem-retention behavior. STANLEY describes its POP closed-end family as cup-ended, with retention of the **mandrel head** and a seal against liquid or vapor for that family. Those are manufacturer claims for the named products and conditions; the word *closed-end* alone does not establish a watertight assembled joint. [POP closed-end product description](https://europe.en.stanleyengineeredfastening.com/fasteners/rivets/non-structural-rivets/closed-end).

“Structural” and “retained mandrel” likewise need a named fastener and its specification. STANLEY calls **Avdel Monobolt** a structural breakstem, multi-grip rivet whose stem is mechanically locked into the body. This does not make ordinary open-end POP rivets structural or imply that every breakstem retains the same portion of its mandrel. [Avdel Monobolt product description](https://europe.en.stanleyengineeredfastening.com/fasteners/rivets/specialist-rivets/avdel-monobolt); [POP open-end product range](https://europe.en.stanleyengineeredfastening.com/fasteners/rivets/non-structural-rivets/open-end).

Body and mandrel materials can differ. POP's open-end range lists, for example, aluminum bodies with aluminum or steel mandrels, steel with steel, and stainless steel with stainless or steel mandrels. This is a product-range inventory, not a material compatibility approval. Joint materials, environment and required resistance to corrosion remain application-specific; GESIPA likewise treats strength, corrosion resistance and environment as selection factors. [POP open-end material table](https://europe.en.stanleyengineeredfastening.com/fasteners/rivets/non-structural-rivets/open-end); [GESIPA grip-range article](https://www.gesipa.com/service/gesipa-makes-it-clear/grip-range-for-blind-rivets/).

## Interpreting a requirement

**Synthesis:** A stack thickness within a listed grip range supports only the thickness-fit part of selection. A joint also has a hole condition, head-bearing surface, accessible tool envelope, blind-side clearance, material combination and load/environment requirements. A product-specific shear or tensile value describes its stated test or catalog conditions; it does not alone prove a whole joint, fatigue life, sealing performance or suitability for a structural application. The exact fastener part and applicable manufacturer data are needed for those claims. [POP design guidelines](https://europe.en.stanleyengineeredfastening.com/brands/pop/pop-rivet-design-guidelines); [GESIPA grip-range article](https://www.gesipa.com/service/gesipa-makes-it-clear/grip-range-for-blind-rivets/).

This reference uses the public manufacturer pages linked above as accessed on October 30, 2026 PDT. The GESIPA grip article states June 5, 2026 and its setting/failure article states May 22, 2026 as publication dates. The cited POP, Avdel, SFS and GESIPA rivet-nut pages do not state a document revision in the inspected content. No full standard, product drawing, installation instruction, or customer-specific capability is established here.

## Related reference

[Hardware and component references](../index.md)