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3G Electric
PROTO J3772 SAE Double End Flare Nut Wrench - SAE, Double End, Standard-Head, 6-Point Flare Nut Wrenches
PROTOSAE, Double End, Standard-Head, 6-Point Flare Nut Wrenches

PROTO J3772 SAE Double End Flare Nut Wrench

The PROTO Flare Nut Wrench (MPN J3772) is an SAE, double-end, standard-head, 6-point flare nut wrench made of alloy steel with a satin finish. It features 5/8 in and 11/16 in head sizes and an overall length of 8 3/4 in.

SKU 3G-OTH-311094

Also listed as: J 3772 · J-3772

Brand
PROTO
Item
J3772 SAE Double End Flare Nut Wrench
Part Number
J3772
Category
SAE, Double End, Standard-Head, 6-Point Flare Nut Wrenches
Available to Order
Also known as:J3772PROTO
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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
J3772
Type
Satin, 5/8 in_11/16 in Head Size, SAE
Overall Lg
8 3/4 in

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

Product Description

The PROTO Flare Nut Wrench (MPN J3772) is an SAE, double-end, standard-head, 6-point flare nut wrench made of alloy steel with a satin finish. It features 5/8 in and 11/16 in head sizes and an overall length of 8 3/4 in.

Frequently Asked Questions

What is a PROTO Flare Nut Wrench used for?

A PROTO Flare Nut Wrench is designed for tightening or loosening flare nuts on fuel, brake, and hydraulic lines. Its 6-point, double-end configuration grips the nut flats securely, reducing the risk of rounding or damaging soft metal fittings in automotive and industrial maintenance applications.

What are the specifications of the PROTO J3772 Flare Nut Wrench?

The PROTO J3772 Flare Nut Wrench is an SAE double-end, standard-head, 6-point wrench made of alloy steel with a satin finish. It has head sizes of 5/8 in and 11/16 in, with an overall length of 8 3/4 in. The manufacturer part number is J3772.

Where to buy a PROTO Flare Nut Wrench worldwide?

3G Electric supplies the PROTO Flare Nut Wrench (J3772) to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us to source this PROTO wrench for your maintenance or repair needs.

How to select the right flare nut wrench size?

To select the correct flare nut wrench, measure the hex nut on the fitting across the flats. The PROTO J3772 covers 5/8 in and 11/16 in SAE sizes. Always match the wrench size exactly to the nut to prevent slippage and damage. For metric fittings, choose a corresponding metric flare nut wrench.

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.
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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.

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