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PROTO Socket Adapter: 3/8 in Output Drive Size, Square, 1 in Overall Lg, Chrome - 1/4" Drive Hand Socket Adapters
PROTO1/4" Drive Hand Socket Adapters

PROTO Socket Adapter: 3/8 in Output Drive Size, Square, 1 in Overall Lg, Chrome

The PROTO Socket Adapter (MPN J5256) is a 1/4" Drive Hand Socket Adapter with a 3/8 in Output Drive Size. It features a Square drive type, Chrome finish, and includes a locking mechanism.

SKU 3G-OTH-321417

Also listed as: J 5256 · J-5256

Brand
PROTO
Item
Socket Adapter: 3/8 in Output Drive Size, Square, 1 in Overall Lg, Chrome
Category
1/4" Drive Hand Socket Adapters
Available to Order
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Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

PROTO
Manufacturer Part Number
J5256
Type
Square, Chrome, Locking Included
Overall Lg
1 in

Technical Documents

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PROTO Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The PROTO Socket Adapter (MPN J5256) is a 1/4" Drive Hand Socket Adapter with a 3/8 in Output Drive Size. It features a Square drive type, Chrome finish, and includes a locking mechanism.

Frequently Asked Questions

What is the PROTO J5256 socket adapter used for?

The PROTO J5256 socket adapter converts a 1/4" drive tool to a 3/8" output drive size, enabling use of larger sockets. It is commonly used in automotive repair, industrial maintenance, and assembly applications where a secure, locking connection is required.

What are the specifications of the PROTO J5256 socket adapter?

The PROTO J5256 is a 1/4" drive hand socket adapter with a 3/8" square output drive. It has a chrome finish, an overall length of 1 inch, and includes a locking mechanism for secure socket retention. The manufacturer part number is J5256.

Where to buy the PROTO J5256 socket adapter worldwide?

3G Electric supplies the PROTO J5256 socket adapter worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to select the correct PROTO socket adapter for your tools?

To select the correct PROTO socket adapter, match the input drive size to your ratchet or driver (e.g., 1/4") and the output drive size to your sockets (e.g., 3/8"). Ensure the adapter includes a locking feature if you need secure socket retention during use.

Used in

Common applications for PROTO
Automotive assembly — PROTO J72102 impact socket set for fastening lug nuts on production lines
Heavy equipment maintenance — PROTO J3772T flare nut wrench for hydraulic line fittings on excavators
General industrial repair — PROTO J795SA adjustable wrench set for tightening bolts on conveyor systems
Aerospace manufacturing — PROTO J5240A slotted bit socket for adjusting fasteners in confined spaces
Oil and gas pipeline work — PROTO J5438 12-point socket for valve assembly in refineries
Construction site toolkits — PROTO J8179-T500 double box wrench for structural steel bolting

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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