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PROTO J3764 SAE Double End 6-Point Flare Nut Wrench, 3/8 in x 7/16 in - SAE, Double End, Standard-Head, 6-Point Flare Nut Wrenches
PROTOSAE, Double End, Standard-Head, 6-Point Flare Nut Wrenches

PROTO J3764 SAE Double End 6-Point Flare Nut Wrench, 3/8 in x 7/16 in

The PROTO Flare Nut Wrench (MPN J3764) is an SAE, double-end, standard-head, 6-point flare nut wrench made of alloy steel with a satin finish. It features 3/8 in and 7/16 in head sizes and an overall length of 6 1/4 in.

SKU 3G-OTH-311087

Also listed as: J 3764 · J-3764

Brand
PROTO
Item
J3764 SAE Double End 6-Point Flare Nut Wrench, 3/8 in x 7/16 in
Category
SAE, Double End, Standard-Head, 6-Point Flare Nut Wrenches
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

PROTO
Manufacturer Part Number
J3764
Type
Satin, 3/8 in_7/16 in Head Size, SAE
Overall Lg
6 1/4 in

Technical Documents

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

Product Description

The PROTO Flare Nut Wrench (MPN J3764) is an SAE, double-end, standard-head, 6-point flare nut wrench made of alloy steel with a satin finish. It features 3/8 in and 7/16 in head sizes and an overall length of 6 1/4 in.

Frequently Asked Questions

What is a PROTO flare nut wrench used for?

A PROTO flare nut wrench is used to tighten or loosen flare nuts on brake lines, fuel lines, and hydraulic fittings. Its 6-point design grips the nut securely without rounding, making it essential for automotive and industrial maintenance where SAE fasteners are common.

What are the specifications of the PROTO J3764 flare nut wrench?

The PROTO J3764 is a double-end, standard-head, 6-point flare nut wrench made of alloy steel with a satin finish. It has 3/8 in and 7/16 in head sizes, an overall length of 6 1/4 in, and is SAE. It is not a ratcheting or flex-head type.

Where to buy a PROTO J3764 flare nut wrench worldwide?

3G Electric supplies the PROTO J3764 flare nut wrench worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. 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 nut size, typically stamped on the wrench. For SAE systems, use the PROTO J3764 for 3/8 in and 7/16 in nuts. Ensure the wrench is alloy steel for durability and a satin finish for corrosion resistance. Always verify fit before applying torque.

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 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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This PROTO flare nut wrench is a double-end, standard-head, 6-point design for SAE flare nuts. Made from alloy steel with a satin finish, it has a 9/16 in head size and 7 in overall length. Commonly used in automotive and industrial maintenance for tightening or loosening flare nuts on brake lines, fuel lines, and hydraulic systems
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This PROTO flare nut wrench is a double-end, standard-head, 6-point design for SAE flare nuts. Made from alloy steel with a satin finish, it has a 9/16 in head size and 7 in overall length. Commonly used in automotive and industrial maintenance for tightening or loosening flare nuts on brake lines, fuel lines, and hydraulic systems
Alloy steel construction with satin finish. Double-end, standard-head, 6-point design for use on flare nuts in brake, fuel, and hydraulic line applications. Head size 3/8 in, overall length 5 3/4 in
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Alloy steel construction with satin finish. Double-end, standard-head, 6-point design for use on flare nuts in brake, fuel, and hydraulic line applications. Head size 3/8 in, overall length 5 3/4 in
Alloy steel construction with satin finish. Double-end, standard-head design with 12-point openings for 3/8 in and 7/16 in SAE flare nuts. Overall length 6 1/4 in. Used for tightening or loosening flare nuts on brake lines, fuel lines, and hydraulic fittings
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Alloy steel construction with satin finish. Double-end, standard-head design with 12-point openings for 3/8 in and 7/16 in SAE flare nuts. Overall length 6 1/4 in. Used for tightening or loosening flare nuts on brake lines, fuel lines, and hydraulic fittings
This SAE double-end flare nut wrench features 12-point openings in 1/2 in and 9/16 in sizes, with a 7-1/2 in overall length. Constructed from alloy steel with a satin finish, it is designed for tightening or loosening flare nuts on brake lines, fuel lines, and hydraulic fittings in automotive and industrial applications
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This SAE double-end flare nut wrench features 12-point openings in 1/2 in and 9/16 in sizes, with a 7-1/2 in overall length. Constructed from alloy steel with a satin finish, it is designed for tightening or loosening flare nuts on brake lines, fuel lines, and hydraulic fittings in automotive and industrial applications
Alloy steel flare nut wrench with satin finish. Double-end, standard-head, 12-point design for 5/8 in and 11/16 in SAE fasteners. Overall length 8-3/4 in. Used for tightening or loosening flare nuts on brake, fuel, and hydraulic lines
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Alloy steel flare nut wrench with satin finish. Double-end, standard-head, 12-point design for 5/8 in and 11/16 in SAE fasteners. Overall length 8-3/4 in. Used for tightening or loosening flare nuts on brake, fuel, and hydraulic lines

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This SAE double-end flare nut wrench is made of alloy steel with a satin finish. It features 6-point heads sized 5/8 in and 11/16 in, with an overall length of 8-3/4 in. Designed for tightening or loosening flare nuts on fuel, brake, and hydraulic lines
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This SAE double-end flare nut wrench is made of alloy steel with a satin finish. It features 6-point heads sized 5/8 in and 11/16 in, with an overall length of 8-3/4 in. Designed for tightening or loosening flare nuts on fuel, brake, and hydraulic lines
This PROTO flare nut wrench is made from alloy steel with a satin finish. It features double-end, standard-head, 6-point design with 3/4 in and 7/8 in head sizes, and an overall length of 9 1/2 in. Used for tightening or loosening flare nuts on hydraulic, fuel, and refrigeration lines
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This PROTO flare nut wrench is made from alloy steel with a satin finish. It features double-end, standard-head, 6-point design with 3/4 in and 7/8 in head sizes, and an overall length of 9 1/2 in. Used for tightening or loosening flare nuts on hydraulic, fuel, and refrigeration lines
This PROTO flare nut wrench is made of alloy steel with a satin finish. It features a double-end, standard-head, 6-point design with an 11/16 in head size and 8 3/4 in overall length. Used for tightening or loosening flare nuts on fuel, brake, and hydraulic lines without damaging the fitting
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This PROTO flare nut wrench is made of alloy steel with a satin finish. It features a double-end, standard-head, 6-point design with an 11/16 in head size and 8 3/4 in overall length. Used for tightening or loosening flare nuts on fuel, brake, and hydraulic lines without damaging the fitting
Alloy steel flare nut wrench with satin finish. Double-end, standard-head, 6-point design fits 1/2 in flare nuts. Overall length 6-1/2 in. Used for tightening or loosening flare nuts on hydraulic, fuel, and refrigeration lines
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Alloy steel flare nut wrench with satin finish. Double-end, standard-head, 6-point design fits 1/2 in flare nuts. Overall length 6-1/2 in. Used for tightening or loosening flare nuts on hydraulic, fuel, and refrigeration lines
This SAE double-end flare nut wrench features a 6-point design for securely gripping flare nuts without rounding. Made of alloy steel with a satin finish, it has a 5/8 in head size and 7 3/4 in overall length. Commonly used for tightening or loosening flare nuts on brake lines, fuel lines, and hydraulic fittings
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This SAE double-end flare nut wrench features a 6-point design for securely gripping flare nuts without rounding. Made of alloy steel with a satin finish, it has a 5/8 in head size and 7 3/4 in overall length. Commonly used for tightening or loosening flare nuts on brake lines, fuel lines, and hydraulic fittings
This SAE double-end flare nut wrench features 1/2 in and 9/16 in head sizes with a 6-point design for secure grip on flare nuts. Made of alloy steel with a satin finish, it has a 7-1/2 in overall length. Typical applications include tightening or loosening flare nuts on brake lines, fuel lines, and hydraulic fittings
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This SAE double-end flare nut wrench features 1/2 in and 9/16 in head sizes with a 6-point design for secure grip on flare nuts. Made of alloy steel with a satin finish, it has a 7-1/2 in overall length. Typical applications include tightening or loosening flare nuts on brake lines, fuel lines, and hydraulic fittings
Double-end, standard-head, 6-point SAE flare nut wrench made from alloy steel with a satin finish. Head size is 3/4 in; overall length is 9 1/4 in. Used for tightening or loosening flare nuts on brake lines, fuel lines, and hydraulic fittings in automotive and industrial maintenance
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Double-end, standard-head, 6-point SAE flare nut wrench made from alloy steel with a satin finish. Head size is 3/4 in; overall length is 9 1/4 in. Used for tightening or loosening flare nuts on brake lines, fuel lines, and hydraulic fittings in automotive and industrial maintenance
This PROTO flare nut wrench is made from alloy steel with a satin finish. It features a 7/16 in head size and 6 in overall length, with a 6-point, double-end, standard-head SAE design. Used for tightening or loosening flare nuts on brake lines, fuel lines, and hydraulic fittings
PROTO
This PROTO flare nut wrench is made from alloy steel with a satin finish. It features a 7/16 in head size and 6 in overall length, with a 6-point, double-end, standard-head SAE design. Used for tightening or loosening flare nuts on brake lines, fuel lines, and hydraulic fittings