PROTO Crowfoot Socket Wrench: Alloy Steel, Chrome, 1/2 in Drive Size
The PROTO J5321MCF is a metric open end crowfoot wrench made of alloy steel with a chrome finish. It features a 1/2-inch drive size and a 21 mm head size, designed for use with standard socket drivers.
SKU 3G-OTH-314981
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Product Description
The PROTO J5321MCF is a metric open end crowfoot wrench made of alloy steel with a chrome finish. It features a 1/2-inch drive size and a 21 mm head size, designed for use with standard socket drivers.
Frequently Asked Questions
What is the PROTO J5321MCF crowfoot socket wrench used for?
The PROTO J5321MCF is a metric open end crowfoot wrench used to access fasteners in tight spaces where a standard socket or wrench cannot fit. It attaches to a 1/2-inch drive socket driver, making it ideal for automotive, industrial, and maintenance applications requiring precise torque application.
What are the specifications of the PROTO J5321MCF crowfoot wrench?
The PROTO J5321MCF is made of alloy steel with a chrome finish. It has a 1/2-inch drive size and a 21 mm head size. This metric open end crowfoot wrench is designed for use with standard socket drivers and is manufactured by PROTO under part number J5321MCF.
Where to buy the PROTO J5321MCF crowfoot wrench worldwide?
You can source the PROTO J5321MCF crowfoot wrench worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we supply genuine PROTO tools to customers around the world.
How to select the correct crowfoot wrench size for a fastener?
To select the correct crowfoot wrench, match the head size to the fastener's nut or bolt dimension. For the PROTO J5321MCF, the 21 mm head fits a 21 mm fastener. Ensure your drive tool has a 1/2-inch square drive. Always verify clearance and torque requirements before use to avoid damage.
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Common applications for PROTOPROTO Products
3G Electric supplies PROTO metric open end crowfoot wrenches. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















