EXW Singapore — collect or forward from our Singapore office.

3G Electric
PROTO J3753 SAE Double End 6-Point Flare Nut Wrench - SAE, Double End, Standard-Head, 6-Point Flare Nut Wrenches
PROTOSAE, Double End, Standard-Head, 6-Point Flare Nut Wrenches

PROTO J3753 SAE Double End 6-Point Flare Nut Wrench

The PROTO Flare Nut Wrench (MPN J3753) is an SAE, double-end, standard-head, 6-point flare nut wrench made of alloy steel with a satin finish. It features a 1/2 in head size and a 6 1/2 in overall length.

SKU 3G-OTH-311089

Also listed as: J 3753 · J-3753

Brand
PROTO
Item
J3753 SAE Double End 6-Point Flare Nut Wrench
Part Number
J3753
Category
SAE, Double End, Standard-Head, 6-Point Flare Nut Wrenches
Available to Order
Also known as:J3753PROTO
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

Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

PROTO
Manufacturer Part Number
J3753
Type
Satin
Overall Lg
6 1/2 in
Flare Nut
6-Point
Head 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 Flare Nut Wrench (MPN J3753) is an SAE, double-end, standard-head, 6-point flare nut wrench made of alloy steel with a satin finish. It features a 1/2 in head size and a 6 1/2 in overall length.

Frequently Asked Questions

What is the PROTO Flare Nut Wrench J3753 used for?

The PROTO J3753 flare nut wrench is designed for tightening or loosening flare nuts on hydraulic, fuel, and refrigeration lines. Its 6-point, double-end configuration provides a secure grip on soft brass or aluminum fittings without rounding, making it essential for automotive, HVAC, and industrial maintenance.

What are the specifications of the PROTO J3753 flare nut wrench?

The PROTO J3753 is an SAE double-end, standard-head, 6-point flare nut wrench. It is made of alloy steel with a satin finish, has a 1/2 in head size, and an overall length of 6 1/2 in. The manufacturer part number is J3753.

Where to buy the PROTO J3753 flare nut wrench worldwide?

3G Electric supplies the PROTO J3753 flare nut wrench to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time on this PROTO tool.

How to select the right flare nut wrench size?

Select a flare nut wrench that matches the hex size of the fitting you are working on. For the PROTO J3753, the head size is 1/2 in, suitable for SAE flare nuts of that dimension. Always verify the fitting size before use to avoid damage. PROTO tools are known for durability in demanding applications.

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 sae, double end, standard-head, 6-point flare nut wrenches. 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 →

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first