PROTO J3039B SAE Double End Open End Wrench
The PROTO J3039B is an SAE double-end open end wrench made from alloy steel with a black oxide finish. It features 3/4 in and 7/8 in head sizes and a 9 39/64 in overall length. This standard wrench is designed for…
SKU 3G-OTH-284849
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
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Product Description
The PROTO J3039B is an SAE double-end open end wrench made from alloy steel with a black oxide finish. It features 3/4 in and 7/8 in head sizes and a 9 39/64 in overall length. This standard wrench is designed for industrial applications requiring a durable, corrosion-resistant hand tool.
Frequently Asked Questions
What is the PROTO J3039B open end wrench used for?
The PROTO J3039B is an SAE double-end open end wrench used for tightening or loosening hex fasteners in industrial maintenance, automotive repair, and mechanical assembly. Its 3/4 in and 7/8 in head sizes suit standard U.S. fasteners, while the black oxide finish provides corrosion resistance for demanding environments.
What are the specifications of the PROTO J3039B wrench?
The PROTO J3039B is an alloy steel, SAE double-end open end wrench with a black oxide finish. It has 3/4 in and 7/8 in head sizes and a 9 39/64 in overall length. The manufacturer part number is J3039B. It is designed as a standard (non-ratcheting) hand tool for industrial use.
Where to buy the PROTO J3039B wrench worldwide?
You can source the PROTO J3039B open end wrench through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we supply genuine PROTO tools for industrial applications.
How to select the correct PROTO open end wrench size?
To select the correct PROTO open end wrench, match the wrench head size to the fastener's hex width. For the J3039B, use the 3/4 in end on a 3/4 in fastener and the 7/8 in end on a 7/8 in fastener. Ensure the wrench is fully seated on the fastener to avoid rounding. PROTO alloy steel construction provides durability for repeated use.
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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.
