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PROTO Socket Bit: 3/8 in Drive Size, Hex Tip, 3/8 in Tip Size, 6 3/32 in Overall Lg - Hex Bit Sockets
PROTOHex Bit Sockets

PROTO Socket Bit: 3/8 in Drive Size, Hex Tip, 3/8 in Tip Size, 6 3/32 in Overall Lg

The PROTO Socket Bit (MPN J49903/8XL) is a hex bit socket with a 3/8 in drive size and a 3/8 in hex tip size, featuring a fixed insert design. It has an overall length of 6 3/32 in and is manufactured by PROTO.

SKU 3G-OTH-305498

Also listed as: J499038XL · J49903 8XL · J49903-8XL

Brand
PROTO
Item
Socket Bit: 3/8 in Drive Size, Hex Tip, 3/8 in Tip Size, 6 3/32 in Overall Lg
Category
Hex Bit Sockets
Available to Order
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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.

Technical Specifications

PROTO
Manufacturer Part Number
J49903/8XL
Type
Hex Tip, Fixed Insert
Overall Lg
6 3/32 in
Tip Size
3/8 in

Technical Documents

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PROTO Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The PROTO Socket Bit (MPN J49903/8XL) is a hex bit socket with a 3/8 in drive size and a 3/8 in hex tip size, featuring a fixed insert design. It has an overall length of 6 3/32 in and is manufactured by PROTO.

Frequently Asked Questions

What is the PROTO J49903/8XL socket bit used for?

The PROTO J49903/8XL hex bit socket is used for driving hex fasteners in industrial assembly, maintenance, and repair tasks. Its 3/8 in drive and fixed insert design provide secure engagement for high-torque applications across machining, material handling, and other plant operations.

What are the specifications of the PROTO J49903/8XL hex bit socket?

The PROTO J49903/8XL has a 3/8 in drive size, a 3/8 in hex tip size, and an overall length of 6 3/32 in. It features a fixed insert design and is manufactured by PROTO. These specs make it suitable for precision fastening in confined spaces.

Where to buy the PROTO J49903/8XL socket bit worldwide?

3G Electric supplies the PROTO J49903/8XL hex bit socket worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for a quote and lead time on this PROTO tool.

How to select the correct hex bit socket for industrial use?

Match the drive size (e.g., 3/8 in) to your ratchet or driver, and the tip size (e.g., 3/8 in hex) to the fastener. Consider overall length for access. The PROTO J49903/8XL fixed insert design offers durability for repeated use in demanding environments.

Used in

Common applications for PROTO
Automotive assembly — PROTO J72102 impact socket set for fastening lug nuts on production lines
Heavy equipment maintenance — PROTO J3772T flare nut wrench for hydraulic line fittings on excavators
General industrial repair — PROTO J795SA adjustable wrench set for tightening bolts on conveyor systems
Aerospace manufacturing — PROTO J5240A slotted bit socket for adjusting fasteners in confined spaces
Oil and gas pipeline work — PROTO J5438 12-point socket for valve assembly in refineries
Construction site toolkits — PROTO J8179-T500 double box wrench for structural steel bolting

PROTO 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.

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Cross-referenced by specification & description
PROTO Socket Bit: 3/8 in Drive Size, Hex Tip, 3/16 in Tip Size, 6 3/32 in Overall Lg, Fixed Insert (MPN J49903/16XL)
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