CAMP Pentanut 4

Object/Artifact

-

Yosemite Climbing Museum

The clean climbing movement of the 1970’s spurred many hammer-less climbing gear options. Some worked pretty well in Yosemite cracks, others not so much, potentially putting the climber at risk. The generic term for hammer-less gear is Nuts.

The clean climbing movement of the 1970’s spurred many hammer-less climbing gear options. Some worked pretty well in Yosemite cracks, others not so much, potentially putting the climber at risk. The generic term for hammer-less gear is Nuts.

Name/Title

CAMP Pentanut 4

Entry/Object ID

2026.1.132

Description

A "Pentanut" manufactured by Camp in 1985

Use

Climbing Hardware, designed to fit into narrow, tapered rock cracks, locking securely when weighted.

Context

This is a pentanut manufactured by CAMP in 1985. It is a number 4, which was the largest size from 1-4. The design was so the nut could be rotated 180 degrees, fitting a wider variety of cracks. "Early forms of rock protection took the hexagonal shape and name ‘nuts’ from the engineers nuts that had been used previously to jam into rock fissures for running belays and anchors. A multitude of variations on the theme followed, these five-sided ‘Pentanuts’ was one. Created by the Italian company CAMP in 1985 they had a limited success on the continent, with very few making it over the channel to the UK, the more versatile ‘Friends’ & other camming devices being more popular..." -Excerpt from Scottish Mountain Heritage Collection (SMHC).

Collection

Yosemite Climbing Museum Permanent Collection

Category

Climbing Hardware, Nuts/Chocks

Acquisition

Accession

2026.1

Made/Created

Manufacturer

CAMP

Date made

1985

Inscription/Signature/Marks

Type

Makers Mark

Transcription

CAMP 4

Dimensions

Dimension Description

Entire Wire with Nut

Dimension Description

Nut

Width

2 in

Length

1-3/8 in

Material

Aluminum

Location

Location

Display Case

Exhibit Case 11

Date

February 10, 2026

Provenance

Provenance Detail

Unknown

General Notes

Note Type

Cataloging Note

Note

Caption in the museum is: "The clean climbing movement of the 1970’s spurred many hammer-less climbing gear options. Some worked pretty well in Yosemite cracks, others not so much, potentially putting the climber at risk. The generic term for hammer-less gear is Nuts."

Create Date

February 10, 2026

Update Date

March 10, 2026