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PROTO Socket Bit: 3/8 in Drive Size, Hex Tip, 3/16 in Tip Size, 1 13/16 in Overall Lg - Hex Bit Sockets
PROTOHex Bit Sockets

PROTO Socket Bit: 3/8 in Drive Size, Hex Tip, 3/16 in Tip Size, 1 13/16 in Overall Lg

The PROTO J49903/16ST is a hex bit socket with a 3/8 in drive size and a 3/16 in hex tip size, featuring a fixed insert design. This socket bit has an overall length of 1 13/16 in and is manufactured by PROTO under…

SKU 3G-OTH-305467

Also listed as: J4990316ST · J49903 16ST · J49903-16ST

Brand
PROTO
Item
Socket Bit: 3/8 in Drive Size, Hex Tip, 3/16 in Tip Size, 1 13/16 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
J49903/16ST
Type
Hex Tip, Fixed Insert
Overall Lg
1 13/16 in
Tip Size
3/16 in

Technical Documents

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

Product Description

The PROTO J49903/16ST is a hex bit socket with a 3/8 in drive size and a 3/16 in hex tip size, featuring a fixed insert design. This socket bit has an overall length of 1 13/16 in and is manufactured by PROTO under part number J49903/16ST.

Frequently Asked Questions

What is the PROTO J49903/16ST hex bit socket used for?

The PROTO J49903/16ST hex bit socket is used for driving hex-head fasteners in industrial assembly, maintenance, and repair tasks. Its 3/8 in drive and 3/16 in hex tip suit precision work across machining, material handling, and electrical departments.

What are the specifications of the PROTO J49903/16ST socket bit?

The PROTO J49903/16ST is a fixed-insert hex bit socket with a 3/8 in drive size, a 3/16 in hex tip size, and an overall length of 1 13/16 in. It is manufactured by PROTO under part number J49903/16ST.

Where to buy the PROTO J49903/16ST hex bit socket worldwide?

3G Electric supplies the PROTO J49903/16ST hex bit socket worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time.

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

Match the drive size of the socket to your ratchet (3/8 in) and the tip size to the fastener hex (3/16 in). The PROTO J49903/16ST fixed-insert design provides a secure fit for repeated use. Always verify overall length for clearance in tight spaces.

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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