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WIHA Insulated Socket: 3/8 in Drive Size, 21 mm Socket Size, 1 1/8 in Overall Lg - 3/8" Drive Metric Insulated Hand Sockets
WIHA3/8" Drive Metric Insulated Hand Sockets

WIHA Insulated Socket: 3/8 in Drive Size, 21 mm Socket Size, 1 1/8 in Overall Lg

The WIHA Insulated Socket is a 3/8" Drive Metric Insulated Hand Socket (MPN 31521) with a 21 mm socket size, 12-point configuration, and 1 1/8 in overall length. It features a Chrome finish and is Not Tether Capable.

SKU 3G-OTH-407703

Brand
WIHA
Item
Insulated Socket: 3/8 in Drive Size, 21 mm Socket Size, 1 1/8 in Overall Lg
Category
3/8" Drive Metric Insulated Hand Sockets
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Technical Specifications

WIHA
Manufacturer Part Number
31521
Type
12-Point, Std
Overall Lg
1 1/8 in
Socket Size
21 mm
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WIHA Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The WIHA Insulated Socket is a 3/8" Drive Metric Insulated Hand Socket (MPN 31521) with a 21 mm socket size, 12-point configuration, and 1 1/8 in overall length. It features a Chrome finish and is Not Tether Capable.

Frequently Asked Questions

What is the WIHA Insulated Socket used for?

The WIHA Insulated Socket is used for safely tightening or loosening fasteners on live electrical equipment up to 1000 V AC. It is designed for electricians and maintenance technicians working on energized panels, motors, and switchgear where arc-flash protection is required.

What are the specifications of the WIHA Insulated Socket 31521?

The WIHA Insulated Socket (MPN 31521) has a 3/8 in drive size, 21 mm socket size, 12-point standard configuration, and 1 1/8 in overall length. It features a Chrome finish and is Not Tether Capable. This metric socket is part of WIHA's insulated hand tool line.

Where to buy WIHA Insulated Socket 31521 worldwide?

3G Electric supplies the WIHA Insulated Socket 31521 worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time. We source and deliver this WIHA tool to any country.

How to select the correct WIHA insulated socket size?

To select the correct WIHA insulated socket, match the drive size (3/8 in) to your ratchet, and the socket size (21 mm) to the fastener hex. Ensure the socket is rated for live work (IEC 60900). For metric fasteners, use the 21 mm size; for inch fasteners, choose the corresponding inch size.

Used in

Common applications for WIHA
Electrical panel maintenance — WIHA insulated screwdrivers and sockets (e.g., MPN 31817) for live working up to 1000 V
Assembly line tooling — WIHA T-handle hex key sets (e.g., MPN 33492) for repetitive fastener driving in manufacturing
Field service repair — WIHA L-shaped hex key sets with MagicRing (e.g., MPN 66990) for holding fasteners during installation
Precision electronics — WIHA precision slotted screwdrivers (e.g., MPN 26018) for adjusting components on circuit boards
Mechanical maintenance — WIHA open-end wrenches (e.g., MPN 20138) for tightening bolts in confined spaces
Electrical contracting — WIHA 80-piece insulated tool kit (e.g., MPN 32877) for on-site electrical installations and repairs

WIHA Products

3G Electric supplies WIHA 3/8" drive metric insulated hand sockets. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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