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SK PROFESSIONAL TOOLS Socket: Metric, 1/2 in Drive Size, 21 mm Socket Size, 12-Point, Std - 1/2" Drive Hand Sockets
SK PROFESSIONAL TOOLS1/2" Drive Hand Sockets

SK PROFESSIONAL TOOLS Socket: Metric, 1/2 in Drive Size, 21 mm Socket Size, 12-Point, Std

The SK PROFESSIONAL TOOLS Socket is a 1/2" Drive Hand Socket in metric size, model 40321. It features a 21 mm socket size with a 12-point standard configuration and a Chrome finish.

SKU 3G-OTH-317642

Brand
SK PROFESSIONAL TOOLS
Item
Socket: Metric, 1/2 in Drive Size, 21 mm Socket Size, 12-Point, Std
Category
1/2" Drive Hand 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

SK PROFESSIONAL TOOLS
Manufacturer Part Number
40321
Type
12-Point, Std, Chrome
Socket Size
21 mm
Drive Size
1/2 in

Technical Documents

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SK PROFESSIONAL TOOLS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SK PROFESSIONAL TOOLS Socket is a 1/2" Drive Hand Socket in metric size, model 40321. It features a 21 mm socket size with a 12-point standard configuration and a Chrome finish.

Frequently Asked Questions

What is the SK PROFESSIONAL TOOLS 40321 socket used for?

The SK PROFESSIONAL TOOLS 40321 socket is used for tightening or loosening metric fasteners with a 21 mm head. Its 1/2 in drive and 12-point design suit automotive, industrial, and maintenance applications where high torque and precise fit are required.

What are the specifications of the SK PROFESSIONAL TOOLS 40321 socket?

The SK PROFESSIONAL TOOLS 40321 is a 1/2 in drive hand socket with a 21 mm socket size, 12-point standard configuration, and a Chrome finish. It is a metric socket designed for durability and corrosion resistance in professional workshops.

Where to buy the SK PROFESSIONAL TOOLS 40321 socket worldwide?

3G Electric supplies the SK PROFESSIONAL TOOLS 40321 socket worldwide. As a global industrial solutions provider, we handle logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this metric 1/2 in drive socket.

How to select the right SK PROFESSIONAL TOOLS socket for a 21 mm fastener?

For a 21 mm fastener, choose a 1/2 in drive socket like the SK PROFESSIONAL TOOLS 40321 with a 12-point configuration for better grip on hex bolts. Ensure the drive size matches your ratchet and the socket is Chrome-finished for corrosion resistance in demanding environments.

Used in

Common applications for SK PROFESSIONAL TOOLS
Automotive repair — SK PROFESSIONAL TOOLS 3/8" drive SAE sockets for engine and transmission work
Industrial maintenance — SK PROFESSIONAL TOOLS 1/2" drive metric sockets for machinery bolt tightening
Field service — SK PROFESSIONAL TOOLS flex extensions for accessing fasteners in tight spaces
Assembly lines — SK PROFESSIONAL TOOLS combination wrenches for torque-controlled fastener installation
Facility repair — SK PROFESSIONAL TOOLS deep sockets for recessed nut and bolt applications

SK PROFESSIONAL TOOLS Products

3G Electric supplies SK PROFESSIONAL TOOLS 1/2" drive 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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Compatible alternatives & equivalents

Cross-referenced by specification & description
SK PROFESSIONAL TOOLS Socket: Metric, 1/2 in Drive Size, 20 mm Socket Size, 12-Point, Std, Chrome (MPN 40320)
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SK PROFESSIONAL TOOLS Socket: Metric, 1/2 in Drive Size, 20 mm Socket Size, 12-Point, Std, Chrome (MPN 40320)
SK PROFESSIONAL TOOLS Socket: Metric, 1/2 in Drive Size, 22 mm Socket Size, 12-Point, Std, Chrome (MPN 40322)
SK PROFESSIONAL TOOLS
SK PROFESSIONAL TOOLS Socket: Metric, 1/2 in Drive Size, 22 mm Socket Size, 12-Point, Std, Chrome (MPN 40322)
SK PROFESSIONAL TOOLS Socket: Metric, 1/2 in Drive Size, 15 mm Socket Size, 12-Point, Std, Chrome (MPN 40315)
SK PROFESSIONAL TOOLS
SK PROFESSIONAL TOOLS Socket: Metric, 1/2 in Drive Size, 15 mm Socket Size, 12-Point, Std, Chrome (MPN 40315)
SK PROFESSIONAL TOOLS Socket: Metric, 1/2 in Drive Size, 13 mm Socket Size, 12-Point, Std, Chrome (MPN 40313)
SK PROFESSIONAL TOOLS
SK PROFESSIONAL TOOLS Socket: Metric, 1/2 in Drive Size, 13 mm Socket Size, 12-Point, Std, Chrome (MPN 40313)
SK PROFESSIONAL TOOLS Socket: Metric, 1/2 in Drive Size, 14 mm Socket Size, 12-Point, Std, Chrome (MPN 40314)
SK PROFESSIONAL TOOLS
SK PROFESSIONAL TOOLS Socket: Metric, 1/2 in Drive Size, 14 mm Socket Size, 12-Point, Std, Chrome (MPN 40314)
SK PROFESSIONAL TOOLS Socket: Metric, 1/2 in Drive Size, 19 mm Socket Size, 12-Point, Std, Chrome (MPN 40319)
SK PROFESSIONAL TOOLS
SK PROFESSIONAL TOOLS Socket: Metric, 1/2 in Drive Size, 19 mm Socket Size, 12-Point, Std, Chrome (MPN 40319)

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