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PROTO J4990-SMXL 25-Piece Hex Bit Socket Set, 3/8 in Drive, 4-10 mm - Hex Bit Socket Sets
PROTOHex Bit Socket Sets

PROTO J4990-SMXL 25-Piece Hex Bit Socket Set, 3/8 in Drive, 4-10 mm

The PROTO Socket Bit Set: 1 is a 25-piece hex bit socket set with a 3/8 in drive size and a tip size range of 4 mm to 10 mm. This set features a fixed insert design and is manufactured under the PROTO brand with part…

SKU 3G-OTH-310720

Also listed as: J4990SMXL · J4990 SMXL

Brand
PROTO
Item
J4990-SMXL 25-Piece Hex Bit Socket Set, 3/8 in Drive, 4-10 mm
Part Number
J4990-SMXL
Category
Hex Bit Socket Sets
Available to Order
Also known as:J4990-SMXLPROTO
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Technical Specifications

PROTO
Manufacturer Part Number
J4990-SMXL
Type
- 25 Pieces
Pieces
6
Drive Size
3/8 in
Tip Size Range
4 mm to 10 mm

Technical Documents

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

Product Description

The PROTO Socket Bit Set: 1 is a 25-piece hex bit socket set with a 3/8 in drive size and a tip size range of 4 mm to 10 mm. This set features a fixed insert design and is manufactured under the PROTO brand with part number J4990-SMXL.

Frequently Asked Questions

What is the PROTO J4990-SMXL socket bit set used for?

The PROTO J4990-SMXL socket bit set is used for driving hex fasteners in industrial assembly, maintenance, and repair tasks. It is suitable for automotive, manufacturing, and mechanical applications where precise torque and secure bit retention are required.

What are the specifications of the PROTO J4990-SMXL socket bit set?

The PROTO J4990-SMXL is a 25-piece hex bit socket set with a 3/8 in drive size. It includes 6 pieces covering a tip size range of 4 mm to 10 mm. The set features a fixed insert design and is manufactured by PROTO under part number J4990-SMXL.

Where to buy the PROTO J4990-SMXL socket bit set worldwide?

You can source the PROTO J4990-SMXL socket bit set worldwide through 3G Electric. As a global industrial equipment distributor, 3G Electric handles full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to select the right PROTO hex bit socket set?

To select the right PROTO hex bit socket set, match the drive size (e.g., 3/8 in) to your ratchet or torque wrench, and ensure the tip size range (e.g., 4 mm to 10 mm) covers your fastener sizes. Consider the number of pieces needed for your typical applications.

Used in

Common applications for PROTO
Industrial maintenance — PROTO J6014CXCERT micrometer torque wrench for tightening fasteners to 50–250 ft-lb with tether capability.
Assembly operations — PROTO J6345A electronic torque wrench for 5–50 ft-lb control with audible and visual indicators.
Plumbing and mechanical — PROTO J812HD straight pipe wrench with 2 in jaw capacity for gripping and turning pipes.
Precision fastening — PROTO J61929 multi-bit screw and nut driver kit with 26 alloy steel bits for assembly and maintenance.
Tool organization — PROTO JUC3743-3SG heavy-duty utility cart with drawers, power strip, and padlock for shop floor use.
Metric fastener service — PROTO JSCVM-20SB 20-piece ratcheting combination wrench set covering 6 mm to 32 mm.
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PROTO Products

3G Electric supplies PROTO hex bit socket sets. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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This 25-piece hex bit socket set includes 7 hex bit sockets with a 1/2 in drive and tip sizes ranging from 1/4 in to 5/8 in. Designed for driving hex fasteners, it is suitable for assembly, maintenance, and repair tasks in industrial and mechanical settings
This 25-piece hex bit socket set includes 7 pieces with a 3/8 in drive size and tip sizes ranging from 1/8 in to 3/8 in. Designed for driving hex fasteners in assembly, maintenance, and repair tasks. The fixed insert design ensures secure bit retention during use
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This 25-piece hex bit socket set includes 7 pieces with a 3/8 in drive size and tip sizes ranging from 1/8 in to 3/8 in. Designed for driving hex fasteners in assembly, maintenance, and repair tasks. The fixed insert design ensures secure bit retention during use

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