Socket Key 1/4" 9 mm Proline (model 9017616) for 1/4-inch drives

Proline Socket Key 1/4" 9 mm (model 9017616) is a 9 mm hex socket designed for use with 1/4" drives. Manufactured from chrome-vanadium steel and subjected to controlled hardening and tempering, this socket delivers the hardness and durability required for routine fastening tasks. Its strength exceeds the DIN 3124 and PN-ISO 1711 standards, making it suitable for workshop and household use with compatible 1/4" ratchets or drivers.

Advantages

The socket is made of chrome-vanadium steel with precisely controlled heat treatment to ensure consistent hardness and wear resistance. It features a PRO-DRIVE profiled edge between the contact faces to reduce localized stress on fastener heads and minimize rounding. The part meets and exceeds relevant DIN and PN-ISO strength requirements, providing reliable mechanical performance for standard fastening operations.

Suitable for

• Working with 9 mm bolts and nuts
• Use with 1/4" drives, ratchets and bit holders
• General repair and assembly tasks in workshops and at home

Key specifications

• Model: 9017616
• Size: 9 mm
• Drive: 1/4"
• Material: chrome-vanadium steel
• Standards: exceeds DIN 3124 and PN-ISO 1711
• EAN: 4750959017616

How to use

Select the 9 mm Proline socket and attach it to a compatible 1/4" ratchet, screwdriver handle, or bit holder. Place the socket squarely over the fastener head, applying steady torque while keeping the tool aligned with the fastener to avoid slipping or rounding. For high torque applications, ensure the drive and tool ratings are appropriate.

Usage recommendations

Inspect the socket for wear or damage before use. Clean and lightly lubricate mating surfaces if necessary. Do not exceed the torque limits of the socket or the drive tool; use impact-rated sockets for impact drivers.