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PROTO Socket Bit: 3/8 in Drive Size, Hex Tip, 3/16 in Tip Size, 2 3/4 in Overall Lg - Hex Bit Sockets
PROTOHex Bit Sockets

PROTO Socket Bit: 3/8 in Drive Size, Hex Tip, 3/16 in Tip Size, 2 3/4 in Overall Lg

The PROTO J4990R-3/16 is a 3/8 in drive size hex bit socket with a 3/16 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-3/16.

SKU 3G-OTH-305471

Also listed as: J4990R316 · J4990R 3 16 · J4990R-3-16

Brand
PROTO
Item
Socket Bit: 3/8 in Drive Size, Hex Tip, 3/16 in Tip Size, 2 3/4 in Overall Lg
Category
Hex Bit Sockets
Available to Order
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

PROTO
Manufacturer Part Number
J4990R-3/16
Type
Hex Tip, Fixed Insert
Overall Lg
2 3/4 in
Tip Size
3/16 in

Technical Documents

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

Product Description

The PROTO J4990R-3/16 is a 3/8 in drive size hex bit socket with a 3/16 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-3/16.

Frequently Asked Questions

What is the PROTO J4990R-3/16 hex bit socket used for?

The PROTO J4990R-3/16 is a 3/8 in drive hex bit socket with a 3/16 in hex tip, designed for driving hex fasteners in industrial maintenance, assembly, and repair applications across machining, material handling, and other plant operations.

What are the specifications of the PROTO J4990R-3/16?

The PROTO J4990R-3/16 has a 3/8 in drive size, 3/16 in hex tip size, 2 3/4 in overall length, and a fixed insert design. It is a hex bit socket manufactured by PROTO under part number J4990R-3/16.

Where to buy the PROTO J4990R-3/16 hex bit socket worldwide?

3G Electric supplies the PROTO J4990R-3/16 hex bit socket worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility, ensuring you receive genuine PROTO tools wherever you are located.

How to select the correct hex bit socket for a 3/8 in drive?

To select the correct hex bit socket, match the drive size (3/8 in) to your ratchet or driver, and choose a tip size (e.g., 3/16 in) that fits your fastener. The PROTO J4990R-3/16 offers a fixed insert design for secure engagement in repetitive tasks.

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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