We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

PROTO Socket Extension: 3/8 in Input Drive Size, 3/8 in Output Drive Size, 3 in Overall Lg - 3/8" Drive Hand Socket Extensions
PROTO3/8" Drive Hand Socket Extensions

PROTO Socket Extension: 3/8 in Input Drive Size, 3/8 in Output Drive Size, 3 in Overall Lg

The PROTO J5260-03L is a 3/8" drive hand socket extension with a 3/8 in input and output drive size and a 3 in overall length. It is made of chrome, is not insulated, and includes a locking feature. This…

SKU 3G-OTH-319425

Also listed as: J526003L · J5260 03L

Brand
PROTO
Item
Socket Extension: 3/8 in Input Drive Size, 3/8 in Output Drive Size, 3 in Overall Lg
Category
3/8" Drive Hand Socket Extensions
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support

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
J5260-03L
Type
Chrome
Overall Lg
3 in
Output Drive Size
3/8 in

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The PROTO J5260-03L is a 3/8" drive hand socket extension with a 3/8 in input and output drive size and a 3 in overall length. It is made of chrome, is not insulated, and includes a locking feature. This PROTO-branded extension is designed for use with compatible 3/8" drive sockets.

Frequently Asked Questions

What is the PROTO J5260-03L socket extension used for?

The PROTO J5260-03L is a 3/8" drive hand socket extension used to extend the reach of a ratchet or torque wrench to access fasteners in tight or recessed areas. It is designed for automotive, industrial, and mechanical applications where a standard socket cannot directly reach the fastener.

What are the specifications of the PROTO J5260-03L?

The PROTO J5260-03L has a 3/8 in input and output drive size, a 3 in overall length, and a chrome finish. It is not insulated and includes a locking feature to secure the socket. The manufacturer part number is J5260-03L, and it is designed for use with compatible 3/8" drive sockets.

Where to buy the PROTO J5260-03L worldwide?

You can source the PROTO J5260-03L through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we supply this PROTO extension to procurement teams and maintenance professionals globally.

How to select the right PROTO socket extension length?

Select a PROTO socket extension length based on the depth of the fastener recess and clearance around the work area. The J5260-03L offers a 3 in length for moderate reach. For deeper applications, choose a longer extension. Ensure the drive size matches your ratchet and socket; this model uses 3/8 in drive.

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 3/8" drive hand socket extensions. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
PROTO Socket Extension: 3/8 in Input Drive Size, 3/8 in Output Drive Size, 6 in Overall Lg, Chrome (MPN J5260-06L)
PROTO
PROTO Socket Extension: 3/8 in Input Drive Size, 3/8 in Output Drive Size, 6 in Overall Lg, Chrome (MPN J5260-06L)
PROTO Socket Extension: 3/8 in Input Drive Size, 3/8 in Output Drive Size, 12 in Overall Lg, Chrome (MPN J5262L)
PROTO
PROTO Socket Extension: 3/8 in Input Drive Size, 3/8 in Output Drive Size, 12 in Overall Lg, Chrome (MPN J5262L)
PROTO Socket Extension: 3/8 in Input Drive Size, 3/8 in Output Drive Size, 6 in Overall Lg, Chrome (MPN J5260-06)
PROTO
PROTO Socket Extension: 3/8 in Input Drive Size, 3/8 in Output Drive Size, 6 in Overall Lg, Chrome (MPN J5260-06)
PROTO Socket Extension: 3/8 in Input Drive Size, 3/8 in Output Drive Size, 17 3/16 in Overall Lg (MPN J5263)
PROTO
PROTO Socket Extension: 3/8 in Input Drive Size, 3/8 in Output Drive Size, 17 3/16 in Overall Lg (MPN J5263)
PROTO Socket Extension: 3/4 in Input Drive Size, 3/4 in Output Drive Size, 16 in Overall Lg, Chrome (MPN J5663)
PROTO
PROTO Socket Extension: 3/4 in Input Drive Size, 3/4 in Output Drive Size, 16 in Overall Lg, Chrome (MPN J5663)
PROTO Socket Extension: 3/8 in Input Drive Size, 3/8 in Output Drive Size, 6 in Overall Lg, Std (MPN J5260-06B)
PROTO
PROTO Socket Extension: 3/8 in Input Drive Size, 3/8 in Output Drive Size, 6 in Overall Lg, Std (MPN J5260-06B)

More from PROTO

View all PROTO parts
PROTO Socket Extension: 3/8 in Input Drive Size, 3/8 in Output Drive Size, 3 in Overall Lg, Std (MPN J5260B)
PROTO
PROTO Socket Extension: 3/8 in Input Drive Size, 3/8 in Output Drive Size, 3 in Overall Lg, Std (MPN J5260B)
PROTO Socket Extension: 3/8 in Input Drive Size, 3/8 in Output Drive Size, 1 3/4 in Overall Lg, Std (MPN J5259)
PROTO
PROTO Socket Extension: 3/8 in Input Drive Size, 3/8 in Output Drive Size, 1 3/4 in Overall Lg, Std (MPN J5259)
PROTO Socket Extension: 3/8 in Input Drive Size, 3/8 in Output Drive Size, 8 in Overall Lg, Chrome (MPN J5261)
PROTO
PROTO Socket Extension: 3/8 in Input Drive Size, 3/8 in Output Drive Size, 8 in Overall Lg, Chrome (MPN J5261)
PROTO Socket Extension: 3/8 in Input Drive Size, 3/8 in Output Drive Size, 12 in Overall Lg, Chrome (MPN J5262)
PROTO
PROTO Socket Extension: 3/8 in Input Drive Size, 3/8 in Output Drive Size, 12 in Overall Lg, Chrome (MPN J5262)
PROTO Socket Extension: 3/8 in Input Drive Size, 3/8 in Output Drive Size, 12 in Overall Lg, Std (MPN J5262B)
PROTO
PROTO Socket Extension: 3/8 in Input Drive Size, 3/8 in Output Drive Size, 12 in Overall Lg, Std (MPN J5262B)
PROTO Socket Extension: 3/8 in Input Drive Size, 3/8 in Output Drive Size, 8 in Overall Lg, Std (MPN J5261B)
PROTO
PROTO Socket Extension: 3/8 in Input Drive Size, 3/8 in Output Drive Size, 8 in Overall Lg, Std (MPN J5261B)
PROTO Socket Extension: 3/8 in Input Drive Size, 3/8 in Output Drive Size, 3 in Overall Lg, Chrome (MPN J5260)
PROTO
PROTO Socket Extension: 3/8 in Input Drive Size, 3/8 in Output Drive Size, 3 in Overall Lg, Chrome (MPN J5260)
PROTO Socket Extension: 3/8 in Input Drive Size, 3/8 in Output Drive Size, 8 in Overall Lg, Chrome (MPN J5261L)
PROTO
PROTO Socket Extension: 3/8 in Input Drive Size, 3/8 in Output Drive Size, 8 in Overall Lg, Chrome (MPN J5261L)