Send a part number, a photo, or a whole BOM — we supply it and stand behind it. EXW Singapore — collect from our office.

3G Electric
PROTO 3/8" Drive Metric Flex Socket, 15 mm, 12-Point, Chrome - 3/8" Drive Metric Flex Sockets
PROTO3/8" Drive Metric Flex Sockets

PROTO 3/8" Drive Metric Flex Socket, 15 mm, 12-Point, Chrome

The PROTO Flex Socket (SKU J5278AM, MPN J5278AM) is a 3/8" drive metric flex socket with a 15 mm, 12-point standard configuration. It is constructed from chrome and is not tether capable.

SKU 3G-OTH-307662

Brand
PROTO
Item
3/8" Drive Metric Flex Socket, 15 mm, 12-Point, Chrome
Part Number
J5278AM
Category
3/8" Drive Metric Flex Sockets
Available to Order
Also known as:J5278AMPROTO
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.
EXW Singapore
Collect or forward from our office
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
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.

Technical Specifications

PROTO
Manufacturer Part Number
J5278AM
Type
12-Point, Std, Chrome, Not Tether Capable
Socket Size
15 mm

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 Flex Socket (SKU J5278AM, MPN J5278AM) is a 3/8" drive metric flex socket with a 15 mm, 12-point standard configuration. It is constructed from chrome and is not tether capable.

Frequently Asked Questions

What is the PROTO Flex Socket J5278AM used for?

The PROTO Flex Socket J5278AM is used for turning fasteners in tight or awkward spaces where a straight socket cannot align with the ratchet. Its 15 mm, 12-point design suits automotive, industrial, and maintenance applications requiring a flexible drive connection.

What are the specifications of the PROTO J5278AM flex socket?

The PROTO J5278AM is a 3/8" drive metric flex socket with a 15 mm, 12-point standard configuration. It is made of chrome and is not tether capable. The manufacturer part number is J5278AM, and it is available as SKU J5278AM from 3G Electric.

Where to buy the PROTO J5278AM flex socket worldwide?

3G Electric supplies the PROTO J5278AM flex socket worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us to order this 3/8" drive metric flex socket for your maintenance or production needs.

How to maintain a PROTO chrome flex socket?

To maintain a PROTO chrome flex socket like the J5278AM, clean it after use with a lint-free cloth to remove grease and debris. Avoid using abrasive cleaners that could damage the chrome finish. Store in a dry tool chest to prevent corrosion and ensure the flex joint moves freely.

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.
Not sure this is the right part? Photo-identify it→

PROTO Products

3G Electric supplies PROTO 3/8" drive metric flex 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 →

More from PROTO

View all PROTO parts →
3/8" drive metric flex socket with 10 mm hex size, 6-point configuration, and chrome finish. The pivoting drive end allows access to fasteners in confined or offset spaces where a straight socket cannot align with the ratchet. Not tether capable
PROTO
3/8" drive metric flex socket with 10 mm hex size, 6-point configuration, and chrome finish. The pivoting drive end allows access to fasteners in confined or offset spaces where a straight socket cannot align with the ratchet. Not tether capable

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first