Socket

The Koken 3405W-08 is a precision-engineered 1/4W x 3/8" drive 12-point Whitworth socket, designed with Koken’s Flat Drive technology to provide superior fastener grip, reduced wear, and efficient torque transfer. Its compact design and durable construction make it ideal for automotive, industrial, and mechanical applications involving Whitworth fasteners, especially in classic British vehicles and equipment.

Features:
*12-point design provides improved fastener engagement and allows easier use in tight or confined spaces.
*Flat Drive system maintains flat surface contact between the socket and bolt/nut, reducing wear and enabling higher torque transmission.
*Flat Drive technology is integrated into both the square drive end and the hexagonal or bi-hexagonal socket openings.
*Compact total length (26 mm) enhances accessibility in restricted areas.
*Designed for use with Whitworth fasteners, common in classic vehicles and British machinery.
*Manufactured from high-quality chrome alloy steel for strength and durability.
*Chrome-plated finish offers excellent corrosion resistance and easy cleaning.
*Made in Japan, ensuring precision manufacturing and consistent quality.

Specifications:
*Brand: Koken
*Product Number: 3405W-08
*Drive Size: 3/8 inch square drive
*Socket Size: 1/4W (5/16 BS)
*Point Configuration: 12-point
*Total Length: 26 mm
*Total Width: 18 mm
*Inside Length: 9.5 mm
*Construction: Chrome alloy steel
*Finish: Chrome plated
*Country of Origin: Japan

Applications:
*Automotive maintenance: suitable for classic vehicles and British-made vehicles using Whitworth fasteners.
*Industrial servicing: machinery and equipment with Whitworth bolts and fittings.
*Construction: installation and maintenance tasks involving Whitworth standards.
*General mechanical work requiring a precise, durable Whitworth socket for reliable performance.