PROTO Socket: Metric, 1/2 in Drive Size, 21 mm Socket Size, 12-Point, Std, Chrome
The PROTO Socket: Metric is a 1/2" Drive Hand Socket, model J5421M, featuring a 21 mm, 12-point standard socket size in a chrome finish. This industrial-grade socket is designed for professional use in metric…
SKU 3G-OTH-317861
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.
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Product Description
The PROTO Socket: Metric is a 1/2" Drive Hand Socket, model J5421M, featuring a 21 mm, 12-point standard socket size in a chrome finish. This industrial-grade socket is designed for professional use in metric fastening applications.
Frequently Asked Questions
What is the PROTO J5421M socket used for?
The PROTO J5421M is a 1/2" drive, 21 mm, 12-point standard socket used for tightening or loosening metric fasteners in industrial maintenance, automotive repair, and assembly applications. Its chrome finish resists corrosion, making it suitable for professional shop environments.
What are the specifications of the PROTO J5421M socket?
The PROTO J5421M is a 12-point, standard, chrome socket with a 1/2 in drive size and a 21 mm socket size. It is designed for metric fasteners and is part of PROTO's industrial-grade hand socket line, model J5421M.
Where to buy the PROTO J5421M socket worldwide?
You can source the PROTO J5421M socket through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring the socket reaches your facility regardless of location.
How to select the correct PROTO socket for metric fasteners?
To select the correct PROTO socket, match the drive size (1/2 in) to your ratchet or torque wrench, and choose a socket size (21 mm) that fits the fastener head. For metric fasteners, use a 12-point socket like the J5421M for better grip on hex bolts. Always verify the fastener type before use.
Used in
Common applications for PROTOPROTO Products
3G Electric supplies PROTO 1/2" drive hand sockets. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
