PROTO Socket Bit: 3/8 in Drive Size, Hex Tip, 5/16 in Tip Size, 2 3/4 in Overall Lg
The PROTO J4990R-5/16 is a 3/8 in drive size hex bit socket with a 5/16 in hex tip and 2 3/4 in overall length. It features a fixed insert design and is manufactured by PROTO under part number J4990R-5/16.
SKU 3G-OTH-305585
Also listed as: J4990R516 · J4990R 5 16 · J4990R-5-16
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 J4990R-5/16 is a 3/8 in drive size hex bit socket with a 5/16 in hex tip and 2 3/4 in overall length. It features a fixed insert design and is manufactured by PROTO under part number J4990R-5/16.
Frequently Asked Questions
What is the PROTO J4990R-5/16 hex bit socket used for?
The PROTO J4990R-5/16 is a 3/8 in drive hex bit socket designed for driving hex fasteners in industrial assembly, maintenance, and repair applications. Its fixed insert design provides secure engagement, making it suitable for use with hand tools or power tools in automotive, manufacturing, and mechanical settings.
What are the specifications of the PROTO J4990R-5/16 hex bit socket?
The PROTO J4990R-5/16 hex bit socket has a 3/8 in drive size, a 5/16 in hex tip size, and a 2 3/4 in overall length. It features a fixed insert design and is manufactured by PROTO under part number J4990R-5/16. The tip type is hex, and the socket is built for durability in demanding environments.
Where to buy the PROTO J4990R-5/16 hex bit socket worldwide?
You can source the PROTO J4990R-5/16 hex bit 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 PROTO tools to procurement teams and engineers internationally.
How to select the correct PROTO hex bit socket for your application?
To select the correct PROTO hex bit socket, match the drive size (e.g., 3/8 in) to your ratchet or driver, and the tip size (e.g., 5/16 in) to the fastener. Consider overall length for access in tight spaces. The J4990R-5/16 fixed insert design is ideal for high-torque applications where bit retention is critical.
Used in
Common applications for PROTOPROTO Products
3G Electric supplies PROTO hex bit sockets. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
