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PROTO Impact Socket: 1/2 in Drive Size, Metric, 21 mm Socket Size, 6-Point, Deep - 1/2" Drive Impact Sockets
PROTO1/2" Drive Impact Sockets

PROTO Impact Socket: 1/2 in Drive Size, Metric, 21 mm Socket Size, 6-Point, Deep

The PROTO Impact Socket (SKU 1AW86) is a 1/2" Drive Impact Socket with a 21 mm metric socket size, 6-point deep configuration, and a Black Oxide finish. This PROTO J7321M socket is designed for impact tool use.

SKU 3G-OTH-297729

Brand
PROTO
Item
Impact Socket: 1/2 in Drive Size, Metric, 21 mm Socket Size, 6-Point, Deep
Category
1/2" Drive Impact Sockets
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Technical Specifications

PROTO
Manufacturer Part Number
J7321M
Type
Metric, 6-Point, Deep, Black Oxide
Socket Size
21 mm
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PROTO Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The PROTO Impact Socket (SKU 1AW86) is a 1/2" Drive Impact Socket with a 21 mm metric socket size, 6-point deep configuration, and a Black Oxide finish. This PROTO J7321M socket is designed for impact tool use.

Frequently Asked Questions

What is the PROTO J7321M impact socket used for?

The PROTO J7321M is a 1/2" drive impact socket designed for heavy-duty fastening with impact tools. It is commonly used in automotive repair, industrial maintenance, and construction for tightening or loosening 21 mm metric fasteners. Its 6-point deep configuration provides secure engagement on hex bolts and nuts.

What are the specifications of the PROTO J7321M impact socket?

The PROTO J7321M is a 1/2" drive impact socket with a 21 mm metric socket size, 6-point deep configuration, and a Black Oxide finish. It is designed for use with impact wrenches and drivers. The manufacturer part number is J7321M, and it is part of PROTO's impact socket line.

Where to buy the PROTO J7321M impact socket worldwide?

You can source the PROTO J7321M impact socket 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 genuine PROTO tools for industrial applications.

How to select the correct PROTO impact socket for your application?

To select the correct PROTO impact socket, match the drive size (1/2") to your impact tool, choose the socket size (21 mm) to fit your fastener, and decide between shallow or deep configuration based on access. The 6-point design reduces rounding on hex fasteners. Always use impact-rated sockets like the J7321M for impact tools.

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 1/2" 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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