Rohm PRIMA 13mm Keyed Drill Chuck Female Mount 1/2 x 20 | 317257

Rohm PRIMA 317257 13mm Keyed Drill Chuck – 1/2" x 20 Female Mount

Rohm PRIMA 317257 is a 13mm keyed drill chuck designed to provide dependable bit retention on compatible drills and drilling machines that use a 1/2" x 20 female threaded mount. It’s a practical choice for trade and workshop users who prefer the controlled tightening of a keyed chuck for accurate drilling.

With a 1.5–13mm clamping capacity, the 317257 covers common drilling sizes and is suitable for general drilling tasks where a secure grip on straight-shank bits matters most.

Key Features

• Keyed tightening: Helps achieve a firm, even clamp on the bit for secure hold during drilling.
• 13mm capacity range: Clamps straight-shank accessories from 1.5mm to 13mm for everyday drilling sizes.
• 1/2" x 20 female mount: Threaded fitment for compatible drill spindles and adapters using this common thread format.
• PRIMA series design: Built as a universal, impact-resistant keyed drill chuck style for practical workshop use.
• Compact dimensions: Suitable where a traditional keyed chuck format is preferred without adding unnecessary bulk.

Specifications at a glance

Suitable applications

• Replacing a worn or damaged keyed chuck on compatible drills with a 1/2" x 20 threaded spindle.
• General drilling with straight-shank bits up to 13mm in workshop and site environments.
• Users who prefer keyed tightening for controlled clamping and repeatable bit holding.