Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

PROTO Socket: Metric, 1/2 in Drive Size, 20 mm Socket Size, 6-Point, Std, Chrome - 1/2" Drive Hand Sockets
PROTO1/2" Drive Hand Sockets

PROTO Socket: Metric, 1/2 in Drive Size, 20 mm Socket Size, 6-Point, Std, Chrome

The PROTO Socket: Metric (MPN J5420MH) is a 1/2" Drive Hand Socket with a 20 mm, 6-point standard configuration. It is constructed from chrome and is not tether capable.

SKU 3G-OTH-317827

Brand
PROTO
Item
Socket: Metric, 1/2 in Drive Size, 20 mm Socket Size, 6-Point, Std, Chrome
Category
1/2" Drive Hand Sockets
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

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
J5420MH
Type
6-Point, Std, Chrome, Not Tether Capable
Socket Size
20 mm
Drive Size
1/2 in

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The PROTO Socket: Metric (MPN J5420MH) is a 1/2" Drive Hand Socket with a 20 mm, 6-point standard configuration. It is constructed from chrome and is not tether capable.

Frequently Asked Questions

What is the PROTO J5420MH socket used for?

The PROTO J5420MH is a 1/2" drive hand socket used for tightening or loosening 20 mm metric fasteners in automotive, industrial, and mechanical applications. Its 6-point design provides a secure grip on hex bolts and nuts, reducing the risk of rounding. The chrome finish resists corrosion for durability in workshop environments.

What are the specifications of the PROTO J5420MH socket?

The PROTO J5420MH is a metric socket with a 1/2" drive size and a 20 mm socket size. It features a 6-point standard configuration, is made of chrome, and is not tether capable. The manufacturer part number is J5420MH. This socket is designed for hand use and is part of PROTO's 1/2" Drive Hand Sockets line.

Where to buy the PROTO J5420MH socket worldwide?

You can source the PROTO J5420MH socket worldwide through 3G Electric, a global industrial equipment distributor established in 1990. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time. 3G Electric supplies PROTO tools to customers across multiple industries.

How to select the correct PROTO socket size?

To select the correct PROTO socket, match the socket size to the fastener head dimension. For the J5420MH, use a 20 mm metric fastener. Ensure the drive size (1/2") fits your ratchet or torque wrench. A 6-point socket provides better grip on hex bolts than a 12-point design, reducing slippage during high-torque applications.

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 1/2" drive hand sockets. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
PROTO Socket: Metric, 1/2 in Drive Size, 21 mm Socket Size, 6-Point, Std, Chrome, Not Tether Capable (MPN J5421MH)
PROTO
PROTO Socket: Metric, 1/2 in Drive Size, 21 mm Socket Size, 6-Point, Std, Chrome, Not Tether Capable (MPN J5421MH)
PROTO Socket: Metric, 1/2 in Drive Size, 23 mm Socket Size, 6-Point, Std, Chrome, Not Tether Capable (MPN J5423MH)
PROTO
PROTO Socket: Metric, 1/2 in Drive Size, 23 mm Socket Size, 6-Point, Std, Chrome, Not Tether Capable (MPN J5423MH)
PROTO Socket: Metric, 1/2 in Drive Size, 22 mm Socket Size, 6-Point, Std, Chrome, Not Tether Capable (MPN J5422MH)
PROTO
PROTO Socket: Metric, 1/2 in Drive Size, 22 mm Socket Size, 6-Point, Std, Chrome, Not Tether Capable (MPN J5422MH)
PROTO Socket: Metric, 1/2 in Drive Size, 20 mm Socket Size, 12-Point, Std, Chrome, Socket (MPN J5420M)
PROTO
PROTO Socket: Metric, 1/2 in Drive Size, 20 mm Socket Size, 12-Point, Std, Chrome, Socket (MPN J5420M)
PROTO Socket: Metric, 1/2 in Drive Size, 14 mm Socket Size, 6-Point, Std, Chrome, Not Tether Capable (MPN J5414MH)
PROTO
PROTO Socket: Metric, 1/2 in Drive Size, 14 mm Socket Size, 6-Point, Std, Chrome, Not Tether Capable (MPN J5414MH)
PROTO Socket: Metric, 1/2 in Drive Size, 36 mm Socket Size, 6-Point, Std, Chrome, Not Tether Capable (MPN J5436MH)
PROTO
PROTO Socket: Metric, 1/2 in Drive Size, 36 mm Socket Size, 6-Point, Std, Chrome, Not Tether Capable (MPN J5436MH)

More from PROTO

View all PROTO parts
PROTO Socket: SAE, 1/2 in Drive Size, 1 5/16 in Socket Size, 6-Point, Std, Chrome, Socket (MPN J5442H)
PROTO
PROTO Socket: SAE, 1/2 in Drive Size, 1 5/16 in Socket Size, 6-Point, Std, Chrome, Socket (MPN J5442H)
PROTO Socket: Metric, 1/2 in Drive Size, 24 mm Socket Size, 12-Point, Deep, Chrome, Socket (MPN J5324M)
PROTO
PROTO Socket: Metric, 1/2 in Drive Size, 24 mm Socket Size, 12-Point, Deep, Chrome, Socket (MPN J5324M)
PROTO Socket: SAE, 1/2 in Drive Size, 9/16 in Socket Size, 12-Point, Std, Chrome, Not Tether Capable (MPN J5418)
PROTO
PROTO Socket: SAE, 1/2 in Drive Size, 9/16 in Socket Size, 12-Point, Std, Chrome, Not Tether Capable (MPN J5418)
PROTO Socket: Metric, 1/2 in Drive Size, 31 mm Socket Size, 12-Point, Std, Chrome, Socket (MPN J5431M)
PROTO
PROTO Socket: Metric, 1/2 in Drive Size, 31 mm Socket Size, 12-Point, Std, Chrome, Socket (MPN J5431M)
PROTO Socket: Metric, 1/2 in Drive Size, 16 mm Socket Size, 12-Point, Std, Chrome, Socket (MPN J5416M)
PROTO
PROTO Socket: Metric, 1/2 in Drive Size, 16 mm Socket Size, 12-Point, Std, Chrome, Socket (MPN J5416M)
PROTO Socket: SAE, 1/2 in Drive Size, 5/16 in Socket Size, 12-Point, Std, Chrome, Not Tether Capable (MPN J5410)
PROTO
PROTO Socket: SAE, 1/2 in Drive Size, 5/16 in Socket Size, 12-Point, Std, Chrome, Not Tether Capable (MPN J5410)
PROTO Socket: SAE, 1/2 in Drive Size, 1/2 in Socket Size, 6-Point, Deep, Chrome, Not Tether Capable (MPN J5316H)
PROTO
PROTO Socket: SAE, 1/2 in Drive Size, 1/2 in Socket Size, 6-Point, Deep, Chrome, Not Tether Capable (MPN J5316H)
PROTO Socket: SAE, 1/2 in Drive Size, 9/16 in Socket Size, 6-Point, Deep, Chrome, Not Tether Capable (MPN J5318H)
PROTO
PROTO Socket: SAE, 1/2 in Drive Size, 9/16 in Socket Size, 6-Point, Deep, Chrome, Not Tether Capable (MPN J5318H)