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PROTO J7277A Impact Socket Extension Set, 3/8 in Drive, Black Oxide - Impact Socket Extension Sets
PROTOImpact Socket Extension Sets

PROTO J7277A Impact Socket Extension Set, 3/8 in Drive, Black Oxide

The PROTO Socket Extension Set (MPN J7277A) is an impact socket extension set with a 3/8 in input drive size and a 3/8 in output drive size. It features a black oxide finish and does not include a locking mechanism.

SKU 3G-OTH-405867

Brand
PROTO
Item
J7277A Impact Socket Extension Set, 3/8 in Drive, Black Oxide
Part Number
J7277A
Category
Impact Socket Extension Sets
Available to Order
Also known as:J7277APROTO
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
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Technical Specifications

PROTO
Manufacturer Part Number
J7277A
Type
Black Oxide, Std
Output Drive Size
3/8 in

Technical Documents

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3G Electric (S) Pte. Ltd. — Singapore

Product Description

The PROTO Socket Extension Set (MPN J7277A) is an impact socket extension set with a 3/8 in input drive size and a 3/8 in output drive size. It features a black oxide finish and does not include a locking mechanism.

Frequently Asked Questions

What is the PROTO J7277A socket extension set used for?

The PROTO J7277A socket extension set is used to extend the reach of a ratchet or impact wrench when tightening or loosening fasteners. It is designed for industrial maintenance, automotive repair, and assembly applications where a 3/8 in drive system is required.

What are the specifications of the PROTO J7277A socket extension set?

The PROTO J7277A socket extension set has a 3/8 in input drive size and a 3/8 in output drive size. It features a black oxide finish for corrosion resistance and does not include a locking mechanism. The set is designed for impact use and is manufactured by PROTO.

Where to buy the PROTO J7277A socket extension set worldwide?

You can source the PROTO J7277A socket extension set 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.

How to select the correct socket extension set for impact tools?

To select the correct impact socket extension set, match the drive size (e.g., 3/8 in) to your ratchet or impact wrench. Choose a black oxide finish for durability. Ensure the set is rated for impact use, as standard extensions may crack under high torque. The PROTO J7277A meets these criteria.

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 impact socket extension sets. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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