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PROTO J3220 SAE Double End Open End Wrench - SAE, Double End, Open End Wrenches
PROTOSAE, Double End, Open End Wrenches

PROTO J3220 SAE Double End Open End Wrench

The PROTO J3220 is an SAE double-end open end wrench made from alloy steel with a satin finish. It features 5/16 in and 9/32 in head sizes and a 3 1/2 in overall length. This standard wrench is manufactured by PROTO.

SKU 3G-OTH-284866

Also listed as: J 3220 · J-3220

Brand
PROTO
Item
J3220 SAE Double End Open End Wrench
Category
SAE, Double End, Open End 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
J3220
Type
Satin, 5/16 in_9/32 in Head Size, Std
Overall Lg
3 1/2 in

Technical Documents

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

Product Description

The PROTO J3220 is an SAE double-end open end wrench made from alloy steel with a satin finish. It features 5/16 in and 9/32 in head sizes and a 3 1/2 in overall length. This standard wrench is manufactured by PROTO.

Frequently Asked Questions

What is the PROTO J3220 open end wrench used for?

The PROTO J3220 is a double-end open end wrench used for tightening or loosening hex fasteners in confined spaces. It is common in automotive repair, industrial maintenance, and general mechanical work where SAE fasteners with 5/16 in and 9/32 in head sizes are encountered.

What are the specifications of the PROTO J3220 wrench?

The PROTO J3220 is an SAE double-end open end wrench made from alloy steel with a satin finish. It has head sizes of 5/16 in and 9/32 in, with an overall length of 3 1/2 in. The manufacturer part number is J3220, and it is a standard (non-ratcheting) design.

Where to buy the PROTO J3220 wrench worldwide?

3G Electric supplies the PROTO J3220 open end wrench to customers worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us to source this PROTO wrench for your facility.

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 J3220, the 5/16 in and 9/32 in openings fit corresponding SAE bolts. Ensure the wrench length provides adequate torque for the application without over-tightening.

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, open end wrenches. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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