PROTO Flare Nut Wrench: Alloy Steel, Satin, 7 mm_8 mm Head Size, 5 3/4 in Overall Lg
The PROTO J3707M is a metric, double-end, standard-head, 6-point flare nut wrench made of alloy steel with a satin finish. It features 7 mm and 8 mm head sizes and an overall length of 5 3/4 inches.
SKU 3G-OTH-301389
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Product Description
The PROTO J3707M is a metric, double-end, standard-head, 6-point flare nut wrench made of alloy steel with a satin finish. It features 7 mm and 8 mm head sizes and an overall length of 5 3/4 inches.
Frequently Asked Questions
What is the PROTO J3707M flare nut wrench used for?
The PROTO J3707M flare nut wrench is designed for tightening or loosening flare nuts on brake lines, fuel lines, and hydraulic fittings. Its 6-point, double-end design with 7 mm and 8 mm heads provides a secure grip without rounding soft metal nuts, making it essential for automotive and industrial maintenance.
What are the specifications of the PROTO J3707M flare nut wrench?
The PROTO J3707M is a metric, double-end, standard-head, 6-point flare nut wrench made of alloy steel with a satin finish. It has 7 mm and 8 mm head sizes and an overall length of 5 3/4 inches. The manufacturer part number is J3707M.
Where to buy the PROTO J3707M flare nut wrench worldwide?
You can source the PROTO J3707M flare nut wrench through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring you receive the correct PROTO tool for your application.
How to select the right PROTO flare nut wrench size?
To select the correct PROTO flare nut wrench, match the wrench head size to the flare nut's hex dimension. The J3707M covers 7 mm and 8 mm sizes. For other applications, choose a wrench that fits snugly to prevent rounding. Always verify the nut size before use for safe, effective operation.
Used in
Common applications for PROTOPROTO Products
3G Electric supplies PROTO metric, 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.













