PROTO Open End Wrench: Alloy Steel, Satin, 5/8 in Head Size, 5 3/4 in Overall Lg
The PROTO J3340 is an SAE double-end open end wrench made from alloy steel with a satin finish. It features a 5/8-inch head size and a 5 3/4-inch overall length, with a standard design. This product is manufactured…
SKU 3G-OTH-284862
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Product Description
The PROTO J3340 is an SAE double-end open end wrench made from alloy steel with a satin finish. It features a 5/8-inch head size and a 5 3/4-inch overall length, with a standard design. This product is manufactured by PROTO under part number J3340.
Frequently Asked Questions
What is the PROTO J3340 open end wrench used for?
The PROTO J3340 is a double-end open end wrench used for tightening or loosening SAE fasteners with a 5/8-inch head size. It is commonly applied in automotive repair, industrial maintenance, and mechanical assembly where a satin finish alloy steel tool provides durability and corrosion resistance.
What are the specifications of the PROTO J3340 wrench?
The PROTO J3340 is an SAE double-end open end wrench made from alloy steel with a satin finish. It has a 5/8-inch head size and a 5 3/4-inch overall length. The manufacturer part number is J3340, and it is designed for standard applications.
Where to buy the PROTO J3340 wrench worldwide?
You can source the PROTO J3340 wrench worldwide through 3G Electric, a global industrial equipment distributor established in 1990. 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 PROTO open end wrench size?
To select the correct PROTO open end wrench, match the head size to your fastener's SAE dimension. For the J3340, the 5/8-inch head fits 5/8-inch bolts or nuts. Ensure the overall length of 5 3/4 inches provides adequate leverage for your application without over-torquing.
Used in
Common applications for PROTOPROTO Products
3G Electric supplies PROTO sae, double end, open end wrenches. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















