PROTO Socket Bit: 3/8 in Drive Size, Hex Tip, 1/4 in Tip Size, 2 3/4 in Overall Lg
The PROTO Socket Bit (MPN J4990R-1/4) is a hex bit socket with a 3/8 in drive size, 1/4 in hex tip size, and 2 3/4 in overall length. It features a fixed insert design and is manufactured by PROTO.
SKU 3G-OTH-305276
Also listed as: J4990R14 · J4990R 1 4 · J4990R-1-4
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 Bit (MPN J4990R-1/4) is a hex bit socket with a 3/8 in drive size, 1/4 in hex tip size, and 2 3/4 in overall length. It features a fixed insert design and is manufactured by PROTO.
Frequently Asked Questions
What is the PROTO J4990R-1/4 hex bit socket used for?
The PROTO J4990R-1/4 hex bit socket is used for driving hex-head fasteners in industrial maintenance, assembly, and repair applications. Its 3/8 in drive and 1/4 in hex tip suit precision torque work on machinery, automotive, and equipment where a fixed insert design provides secure engagement.
What are the specifications of the PROTO J4990R-1/4 socket bit?
The PROTO J4990R-1/4 socket bit has a 3/8 in drive size, 1/4 in hex tip size, and 2 3/4 in overall length. It features a fixed insert design and is manufactured by PROTO. The hex tip allows for positive grip on hex fasteners, reducing cam-out risk during high-torque applications.
Where to buy the PROTO J4990R-1/4 hex bit socket worldwide?
3G Electric supplies the PROTO J4990R-1/4 hex bit socket to customers worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your facility. Contact us for a quote and lead time on this PROTO hex bit socket.
How to select the correct hex bit socket for a 3/8 in drive ratchet?
Match the drive size (3/8 in) to your ratchet or torque wrench, and choose a tip size (1/4 in) that fits your fastener. The PROTO J4990R-1/4 fixed insert design provides a solid connection. For repeated use, ensure the overall length (2 3/4 in) provides adequate clearance in your workspace.
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.
