Stahlwille Long metric 1/2" bi-hex sockets, 17mm

Stahlwille 51 is the long version of the 1/2" drive metric bi-hex socket, in 15 sizes from 10 to 32mm. Every size is 83mm long. The bi-hex (double hexagon, 12-point) profile carries Stahlwille's AS-Drive (Anti-Slip Drive) form, which transmits high forces to the flats of nuts and bolts without damaging them. The sockets are HPQ steel, chrome-plated, for hand operation only. The range is made to DIN 3124 / ISO 2725-1 / DIN EN 3710 / DIN EN 3709 / ASME B 107.5M.

Where this product is used

• Metric fasteners from 10 to 32mm that sit below a surface or on a stud
• Reaching a nut that a standard 1/2" socket cannot clear
• Hand-operated work with 1/2" drive ratchets and extension bars

Features

• 1/2" internal square drive, metric sizes 10 to 32mm
• 83mm long in every size
• Bi-hex (12-point) profile with AS-Drive anti-slip form
• HPQ steel, chrome-plated
• Hand operation only
• Made to DIN 3124 / ISO 2725-1 / DIN EN 3710 / DIN EN 3709 / ASME B 107.5M

Key specifications

Choosing the right option

Choose the 51 when reach is the problem and the fastener is metric. The standard-length Stahlwille 50 1/2" Drive Bi-Hex Sockets runs from 38 to 47mm. For inch sizes at the same 83mm length see the Stahlwille 51a 1/2" Drive Long Bi-Hex Sockets. For a 16mm (5/8") spark plug with a rubber insert, see the Stahlwille 51 1/2" Drive Spark Plug Socket.

Related Stahlwille products: Stahlwille 512-2K 1/2" Drive Reversible Ratchet, Stahlwille 512SG-QRN 1/2" Drive QuickRelease Fine-Tooth Ratchet, Stahlwille 517QR 1/2" Drive QuickRelease Flexible-Joint Ratchet, Stahlwille 509 1/2" Drive Extension Bars.