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3G Electric
PROTO J5256B 1/4" Drive to 3/8" Square Socket Adapter - 1/4" Drive Hand Socket Adapters
PROTO1/4" Drive Hand Socket Adapters

PROTO J5256B 1/4" Drive to 3/8" Square Socket Adapter

The PROTO J5256B Socket Adapter is a 1/4" Drive Hand Socket Adapter with a 3/8 in square output drive size and a 1 in overall length. It features a black oxide finish and does not include a locking mechanism.

SKU 3G-OTH-321416

Brand
PROTO
Item
J5256B 1/4" Drive to 3/8" Square Socket Adapter
Part Number
J5256B
Category
1/4" Drive Hand Socket Adapters
Available to Order
Also known as:J5256BPROTO
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Technical Specifications

PROTO
Manufacturer Part Number
J5256B
Type
Square, Black Oxide
Overall Lg
1 in

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3G Electric (S) Pte. Ltd. — Singapore

Product Description

The PROTO J5256B Socket Adapter is a 1/4" Drive Hand Socket Adapter with a 3/8 in square output drive size and a 1 in overall length. It features a black oxide finish and does not include a locking mechanism.

Frequently Asked Questions

What is the PROTO J5256B socket adapter used for?

The PROTO J5256B socket adapter converts a 1/4" drive tool to accept 3/8" drive sockets. It is used in automotive repair, industrial maintenance, and assembly applications where a compact adapter is needed to bridge drive-size gaps.

What are the specifications of the PROTO J5256B socket adapter?

The PROTO J5256B has a 1/4" square input drive and a 3/8" square output drive. Overall length is 1 in. Finish is black oxide. Locking is not included. Manufacturer part number is J5256B.

Where to buy the PROTO J5256B socket adapter worldwide?

3G Electric supplies the PROTO J5256B socket adapter worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for a quote and lead time on this genuine PROTO part.

How to select the right PROTO socket adapter for my tools?

Match the input drive size to your ratchet or driver (1/4" for J5256B) and the output drive size to your sockets (3/8"). Ensure overall length fits your workspace. Black oxide finish resists corrosion. PROTO adapters are widely used in industrial settings.

Used in

Common applications for PROTO
Industrial maintenance — PROTO J6014CXCERT micrometer torque wrench for tightening fasteners to 50–250 ft-lb with tether capability.
Assembly operations — PROTO J6345A electronic torque wrench for 5–50 ft-lb control with audible and visual indicators.
Plumbing and mechanical — PROTO J812HD straight pipe wrench with 2 in jaw capacity for gripping and turning pipes.
Precision fastening — PROTO J61929 multi-bit screw and nut driver kit with 26 alloy steel bits for assembly and maintenance.
Tool organization — PROTO JUC3743-3SG heavy-duty utility cart with drawers, power strip, and padlock for shop floor use.
Metric fastener service — PROTO JSCVM-20SB 20-piece ratcheting combination wrench set covering 6 mm to 32 mm.
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PROTO Products

3G Electric supplies PROTO 1/4" drive hand socket adapters. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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