Bolts and rock anchors: the standards and the rules.

Bolts and sport climbing

The BMC defines sport climbing as climbing on fixed protection, mainly bolts already in the rock. The standards call these rock anchors. The UIAA notes, in an undated foreword to its inspection recommendations, that a standard sets a baseline tested on new equipment in a laboratory, and that field conditions and the state of the gear matter just as much. The sport climbing page explains the discipline.

The standards: EN 959 and UIAA 123

EN 959:2018, "Mountaineering equipment - Rock anchors - Safety requirements and test methods", replaced EN 959:2007. A BSI catalogue summary says it covers load-bearing capacity in the axial and radial directions. The UIAA's standard, UIAA 123 Rock-Anchors, is in its fifth edition and is based on EN 959:2018. The UIAA's own sources differ on the date of version 5.1: the downloaded document is dated July 2026, effective July 2026, while the file listing on the UIAA standards page reads "updated 2020". This page follows the document's own date.

Strength and torque

The UIAA's pictorial for the two standards (dated 2020) shows the strength requirement for all rock-anchor types as 15 kN under EN 959 and 20 kN under UIAA 123. The UIAA 123 text sets these laboratory requirements:

• Every type of rock anchor must withstand an axial load of at least 20 kN without breaking.
• Glued-in anchors must withstand a torque of 150 N m for 60 seconds without turning, and their embedded part must have deformations or roughness.

These figures describe what a sample anchor must survive in a test rig. They are not a statement of what any bolt at a crag will hold.

What UIAA 123 adds beyond EN 959

According to its scope, UIAA 123 adds requirements for corrosion-resistance testing of any corrosion class a maker claims, welding qualification to ISO 3834-2, traceability of materials, and an ISO 9001:2015 certificate for the maker.

Corrosion classes

UIAA 123 version 5.1 defines three corrosion classes, each marked with the letters "UIAA" on every anchor:

The UIAA describes environments where stress corrosion cracking is seen as including high chloride levels, temperatures above 30 C, humidity between 20% and 70%, sea salt or other chlorides, and acidic conditions. It notes that the problem is associated with seaside cliffs but can occur inland and indoors, for example near swimming pools.

The foreword to version 5.0 says the previous version added guidance on atmospherically induced stress corrosion cracking (AISCC), and that some conditions, such as high sulfate levels, may need extra testing. Version 5.1 (July 2026) updated the salt-spray test reference to ASTM B117-26, corrected the torque unit from kN to N m, and changed the name of AISCC to "Atmospheric-Induced" from "Ambient-Induced".

Are bolts PPE?

The European Commission's PPE guidelines (5th edition, October 2025) list rock anchors (pitons) and ice anchors as Category III equipment against falls from a height. The same guidelines exclude anchorage points that form an integral part of a structure or rock face, or that need tools to install. The UIAA also has a separate standard for pitons, UIAA 122 (version 3, 2018).

A UIAA recall page posted on 16 March 2021 relays a Salewa recall of certain welded ring pitons (Ring 95 mm, Ring 125 mm and V-Ring 140 mm, from listed batches), because the welded ring may have too low a breaking load. The recalls page has the other notices.

Who may place fixed gear

Standards cover the hardware. Rules on placing bolts come from elsewhere: from land managers in the US examples below, and from the BMC's bolting policy in the UK.

United States: Arches National Park

The National Park Service's Arches rock climbing page (updated 28 July 2026) requires a permit for new fixed gear, bans homemade hardware and discourages quarter-inch bolts. Bolts, hangers and chains must be painted the colour of the rock or primed brown before installation. Motorised drills are banned in wilderness and need a special use permit outside it. The chalk rules page covers the park's chalk-colour rule.

United States: federal draft guidance

KUNC and the Mountain West News Bureau reported on 19 June 2026 that on 15 June 2026 the National Park Service, US Forest Service, US Fish and Wildlife Service and Bureau of Land Management released new draft guidance that would officially allow fixed anchors, with routes established before 4 January 2025 usable and maintainable indefinitely. The report says the 2024 Protecting America's Rock Climbing (PARC) act had protected existing anchors. As of 21 October 2026 we found no final adopted version, so the guidance is described here as a draft. The access and ethics page has the detail.

United Kingdom: the BMC bolting policy

The BMC says its formal position on drilled equipment is its bolting policy, which gives a framework for agreeing where bolts are and are not acceptable, aims to protect traditions and the crag environment, and describes consultation for new bolting and dry-tooling. Its installers' guide was published in 2021.

Fixed gear in accident reports

The American Alpine Club said on 17 June 2025 that the human factors examined in its 20-year data project included attitudes towards fixed gear. Its series The Prescription (November 2024) reported three accidents in 2023 in which a quickdraw unclipped or snagged on a bolt hanger.