Ko-Ken KO1301A Spare Pin, 3/8 in drive, opening up to 12 mm, 14.5 mm

Ko-Ken A31 to A83 are spare pins for impact sockets.

Lengths are 14.5 to 75 mm. (manufacturer-stated)

Each model is listed in the table below with its specifications.

Where this product is used

• Replacing a lost or worn retaining pin on impact sockets and extension bars
• Keeping an impact socket secured on its drive end
• Workshop and maintenance use alongside the matching O-ring

Features

• Used as a pin and O-ring retaining set, with a C-ring as the alternative (manufacturer-stated)

Key specifications

Drive sizes and lengths are manufacturer-stated (Ko-ken catalogue 2025-26). A dash means the figure is not published on this page.

Selecting the right option

Match the square drive and the socket opening to your impact socket. The catalogue pairs each pin with an O-ring of the same series, or a C-ring as an alternative.

Related products

Related Ko-Ken products: Ko-Ken Impact Socket Spare O-Ring, Ko-Ken 1301C and 1302C C-Ring Retaining Clip, Ko-Ken PK1401C-10 C-Ring Retaining Clip Kit, 10 Clips, 1/2 in Drive, Ko-Ken 1801C-10 C-Ring Retaining Clip Kit, 10 Clips with Puller, 1 in Drive and Ko-Ken 2760, 3760, 4760, 6760 and 8760 Extension Bar, 1/4, 3/8, 1/2, 3/4 and 1 in Drive.