PROTO J7221M 3/8" Drive Impact Socket, 21 mm, 6-Point, Black Oxide
The PROTO Impact Socket (SKU J7221M, MPN J7221M) is a 3/8" drive impact socket with a 21 mm metric socket size and a 6-point standard configuration. It features a Black Oxide finish. This product is designed for use…
SKU 3G-OTH-295009
Local availability & support — Singapore
- Local office
- 20 Woodlands Link #09-05, Singapore 738733
- Phone
- +65 8878 8355
- Payment
- Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
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Product Description
The PROTO Impact Socket (SKU J7221M, MPN J7221M) is a 3/8" drive impact socket with a 21 mm metric socket size and a 6-point standard configuration. It features a Black Oxide finish. This product is designed for use with impact tools.
Frequently Asked Questions
What is the PROTO J7221M impact socket used for?
The PROTO J7221M impact socket is used for fastening and loosening 21 mm metric fasteners with impact tools. Its 6-point design reduces fastener rounding, and the black oxide finish provides corrosion resistance. It is common in automotive, heavy equipment, and industrial maintenance applications.
What are the specifications of the PROTO J7221M impact socket?
The PROTO J7221M is a 3/8" drive impact socket with a 21 mm metric socket size, 6-point standard configuration, and black oxide finish. It is designed for use with impact wrenches and drivers. The manufacturer part number is J7221M.
Where to buy the PROTO J7221M impact socket worldwide?
3G Electric supplies the PROTO J7221M impact socket worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this PROTO impact socket.
How to select the correct PROTO impact socket size?
To select the correct PROTO impact socket, match the drive size (3/8") to your impact tool, and choose the socket size (21 mm) to fit your fastener. Always use impact-rated sockets like the J7221M with impact tools to prevent breakage. Verify fastener type (metric) and point configuration (6-point) for optimal grip.
Used in
Common applications for PROTOPROTO Products
3G Electric supplies PROTO 3/8" drive impact sockets. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
