PROTO Impact Socket: 1/2 in Drive Size, Metric, 21 mm Socket Size, 12-Point, Std
The PROTO J7421MT is a 1/2" Drive Impact Socket with a 21 mm metric, 12-point standard configuration. It features a Black Oxide finish and is designed for impact tool use.
SKU 3G-OTH-297941
Local availability & support — Singapore
- Local office
- 20 Woodlands Link #09-05, Singapore 738733
- Phone
- +65 8878 8355
- Delivery
- Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
- Payment
- Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
- Ships to
- Singapore
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Product Description
The PROTO J7421MT is a 1/2" Drive Impact Socket with a 21 mm metric, 12-point standard configuration. It features a Black Oxide finish and is designed for impact tool use.
Frequently Asked Questions
What is the PROTO J7421MT impact socket used for?
The PROTO J7421MT is a 1/2" drive impact socket designed for fastening and loosening metric 21 mm fasteners using impact wrenches. Its 12-point configuration and black oxide finish suit heavy-duty industrial applications across machining, material handling, and maintenance environments.
What are the specifications of the PROTO J7421MT impact socket?
The PROTO J7421MT has a 1/2" drive size, 21 mm metric socket size, 12-point standard configuration, and a black oxide finish. It is designed for impact tool use and carries the manufacturer part number J7421MT.
Where to buy the PROTO J7421MT impact socket worldwide?
3G Electric supplies the PROTO J7421MT impact socket worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time on this metric 21 mm impact socket.
How to select the correct PROTO impact socket size?
To select the correct PROTO impact socket, match the drive size (1/2") to your impact wrench, and choose the socket size (21 mm) to fit your fastener. Ensure the socket is impact-rated and has the appropriate point configuration (12-point) for your application. Always verify the fastener type and torque requirements.
Used in
Common applications for PROTOPROTO 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.
