PROTO Open End Wrench: Alloy Steel, Black Oxide, 3/8 in_5/16 in Head Size, 5 1/4 in Overall Lg
The PROTO J3020B is a double-end, open-end SAE wrench made from alloy steel with a black oxide finish. It features 3/8 in and 5/16 in head sizes and a 5 1/4 in overall length.
SKU 3G-OTH-284780
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
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Product Description
The PROTO J3020B is a double-end, open-end SAE wrench made from alloy steel with a black oxide finish. It features 3/8 in and 5/16 in head sizes and a 5 1/4 in overall length.
Frequently Asked Questions
What is the PROTO J3020B open end wrench used for?
The PROTO J3020B is a double-end, open-end SAE wrench used for tightening or loosening nuts and bolts in industrial maintenance, automotive repair, and mechanical assembly. Its 3/8 in and 5/16 in head sizes suit standard fasteners, and the alloy steel construction provides durability for repeated use.
What are the specifications of the PROTO J3020B wrench?
The PROTO J3020B is a double-end, open-end SAE wrench made from alloy steel with a black oxide finish. It has head sizes of 3/8 in and 5/16 in, an overall length of 5 1/4 in, and is manufactured by PROTO under part number J3020B. It is not a ratcheting or adjustable tool.
Where to buy the PROTO J3020B wrench worldwide?
3G Electric supplies the PROTO J3020B open end wrench worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we source and deliver this PROTO wrench to any country.
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 nut or bolt head dimension. For the J3020B, use the 3/8 in end on a 3/8 in fastener and the 5/16 in end on a 5/16 in fastener. Ensure the wrench opening fits snugly to avoid rounding the fastener.
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.
