PROTO Socket Bit: 3/8 in Drive Size, Hex Tip, 8 mm Tip Size, 2 23/32 in Overall Lg
The PROTO Socket Bit (MPN J4990-8M) is a hex bit socket with a 3/8 in drive size and an 8 mm hex tip. It features a fixed insert design and has an overall length of 2 23/32 in. This tool is manufactured by PROTO.
SKU 3G-OTH-305247
Also listed as: J49908M · J4990 8M
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 J4990-8M) is a hex bit socket with a 3/8 in drive size and an 8 mm hex tip. It features a fixed insert design and has an overall length of 2 23/32 in. This tool is manufactured by PROTO.
Frequently Asked Questions
What is the PROTO J4990-8M socket bit used for?
The PROTO J4990-8M hex bit socket is used for driving hex-head fasteners in industrial assembly, maintenance, and repair applications. Its 3/8 in drive and 8 mm hex tip suit automotive, machinery, and equipment work where precise torque and secure bit engagement are required.
What are the specifications of the PROTO J4990-8M socket bit?
The PROTO J4990-8M is a hex bit socket with a 3/8 in drive size, 8 mm hex tip, and fixed insert design. Overall length is 2 23/32 in. It is manufactured by PROTO under MPN J4990-8M. The fixed insert ensures the bit stays securely in the socket during use.
Where to buy the PROTO J4990-8M socket bit worldwide?
3G Electric supplies the PROTO J4990-8M hex bit socket worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this PROTO tool.
How to select the correct PROTO hex bit socket for your application?
To select the correct PROTO hex bit socket, match the drive size (3/8 in) to your ratchet or driver, and the tip size (8 mm) to the fastener. Consider overall length for access in tight spaces. The fixed insert design of the J4990-8M provides a stable connection for repeated use.
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.
