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PROTO Socket Set: 3/8 in Drive, 21 Piece, SAE - SAE Socket Sets with Drive Tools
PROTOSAE Socket Sets with Drive Tools

PROTO Socket Set: 3/8 in Drive, 21 Piece, SAE

The PROTO Socket Set (MPN J52121S) is a 21-piece SAE socket set with drive tools, featuring a 3/8 in drive and a size range of 5/16 in to 3/4 in. This set includes standard sockets and does not include socket bits…

SKU 3G-OTH-303686

Brand
PROTO
Item
Socket Set: 3/8 in Drive, 21 Piece, SAE
Category
SAE Socket Sets with Drive Tools
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Technical Specifications

PROTO
Manufacturer Part Number
J52121S
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PROTO Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The PROTO Socket Set (MPN J52121S) is a 21-piece SAE socket set with drive tools, featuring a 3/8 in drive and a size range of 5/16 in to 3/4 in. This set includes standard sockets and does not include socket bits. It is designed for industrial applications requiring standard SAE socket configurations.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the PROTO J52121S socket set used for?

The PROTO J52121S 21-piece SAE socket set is used for tightening and loosening fasteners in industrial maintenance, automotive repair, and assembly applications. It is designed for standard SAE socket configurations with a 3/8 in drive, covering sizes from 5/16 in to 3/4 in.

What are the specifications of the PROTO J52121S socket set?

The PROTO J52121S socket set includes 21 pieces with a 3/8 in drive and SAE sizes ranging from 5/16 in to 3/4 in. It contains standard sockets only; socket bits are not included. The set is manufactured by PROTO under MPN J52121S and is intended for industrial use.

Where to buy the PROTO J52121S socket set worldwide?

You can source the PROTO J52121S socket set worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we supply genuine PROTO tools for industrial applications.

How to select the right PROTO socket set for SAE fasteners?

To select the right PROTO socket set, match the drive size (e.g., 3/8 in) and socket range (e.g., 5/16 in to 3/4 in) to your fastener sizes. The J52121S set is ideal for standard SAE fasteners in industrial settings. Ensure socket bits are not required, as this set excludes them.

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 sae socket sets with drive tools. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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