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PROTO 3/4" Drive Impact Socket, 21 mm, 12-Point Deep, Black Oxide (J07521MLT) - 3/4" Drive Impact Sockets
PROTO3/4" Drive Impact Sockets

PROTO 3/4" Drive Impact Socket, 21 mm, 12-Point Deep, Black Oxide (J07521MLT)

The PROTO Impact Socket (SKU J07521MLT, MPN J07521MLT) is a 3/4" drive impact socket designed for industrial use. It features a 21 mm metric, 12-point, deep configuration with a Black Oxide finish. This socket is…

SKU 3G-OTH-293891

Brand
PROTO
Item
3/4" Drive Impact Socket, 21 mm, 12-Point Deep, Black Oxide
Part Number
J07521MLT
Category
3/4" Drive Impact Sockets
Available to Order
Also known as:J07521MLTPROTO
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Technical Specifications

PROTO
Manufacturer Part Number
J07521MLT
Type
Metric, 12-Point, Deep, Black Oxide
Socket Size
21 mm

Technical Documents

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

Product Description

The PROTO Impact Socket (SKU J07521MLT, MPN J07521MLT) is a 3/4" drive impact socket designed for industrial use. It features a 21 mm metric, 12-point, deep configuration with a Black Oxide finish. This socket is manufactured by PROTO.

Frequently Asked Questions

What is the PROTO J07521MLT impact socket used for?

The PROTO J07521MLT is a 3/4" drive impact socket used for fastening and loosening metric 21 mm fasteners in heavy-duty industrial applications. Its 12-point, deep design provides access to recessed nuts and bolts, making it suitable for automotive, construction, and maintenance tasks.

What are the specifications of the PROTO J07521MLT impact socket?

The PROTO J07521MLT is a 3/4" drive impact socket with a 21 mm metric, 12-point, deep configuration. It features a Black Oxide finish for corrosion resistance. The manufacturer part number is J07521MLT, and it is designed for use with impact tools in industrial environments.

Where to buy the PROTO J07521MLT impact socket worldwide?

3G Electric supplies the PROTO J07521MLT impact socket worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us to source this socket and other industrial equipment across 14 departments.

How to select the correct impact socket size for a fastener?

To select the correct impact socket, match the socket size to the fastener head dimension. For the PROTO J07521MLT, use a 21 mm socket on a 21 mm metric fastener. Ensure the drive size (3/4") matches your impact wrench, and choose deep sockets for recessed fasteners. Always use impact-rated sockets for power tools.

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 3/4" drive impact sockets. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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