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PROTO J3820 SAE Single End Ratcheting 12-Point Flare Nut Wrench - SAE, Single End, Ratcheting 12-Point Flare Nut Wrenches
PROTOSAE, Single End, Ratcheting 12-Point Flare Nut Wrenches

PROTO J3820 SAE Single End Ratcheting 12-Point Flare Nut Wrench

The PROTO Flare Nut Wrench is a single-end, ratcheting 12-point SAE wrench made from alloy steel with a black oxide finish. It features a 5/8 in head size and an overall length of 7 1/4 in (MPN J3820).

SKU 3G-OTH-594834

Also listed as: J 3820 · J-3820

Brand
PROTO
Item
J3820 SAE Single End Ratcheting 12-Point Flare Nut Wrench
Part Number
J3820
Category
SAE, Single End, Ratcheting 12-Point Flare Nut Wrenches
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Technical Specifications

PROTO
Manufacturer Part Number
J3820
Type
Black Oxide
Overall Lg
7 1/4 in
Head Size
5/8 in

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

Product Description

The PROTO Flare Nut Wrench is a single-end, ratcheting 12-point SAE wrench made from alloy steel with a black oxide finish. It features a 5/8 in head size and an overall length of 7 1/4 in (MPN J3820).

Frequently Asked Questions

What is the PROTO Flare Nut Wrench used for?

The PROTO Flare Nut Wrench is designed for tightening or loosening flare nuts on hydraulic, fuel, and refrigeration lines. Its ratcheting 12-point SAE head provides secure grip on 5/8 in fasteners, reducing rounding risk. 3G Electric supplies this wrench globally across industrial maintenance and repair applications.

What are the specifications of the PROTO J3820 Flare Nut Wrench?

The PROTO J3820 is a single-end, ratcheting 12-point SAE flare nut wrench with a 5/8 in head size and 7 1/4 in overall length. It is made from alloy steel with a black oxide finish. 3G Electric sources genuine PROTO tools for worldwide delivery.

Where to buy the PROTO Flare Nut Wrench in worldwide?

3G Electric supplies the PROTO Flare Nut Wrench (MPN J3820) to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us to order this genuine PROTO tool for your industrial maintenance needs.

How to maintain a PROTO Flare Nut Wrench?

To maintain your PROTO Flare Nut Wrench, clean it after use with a dry cloth to remove debris and moisture. Apply light oil to the ratcheting mechanism periodically. Store in a dry environment to prevent corrosion. 3G Electric provides genuine PROTO tools and support for proper care.

Used in

Common applications for PROTO
Industrial maintenance — PROTO J6014CXCERT micrometer torque wrench for tightening fasteners to 50–250 ft-lb with tether capability.
Assembly operations — PROTO J6345A electronic torque wrench for 5–50 ft-lb control with audible and visual indicators.
Plumbing and mechanical — PROTO J812HD straight pipe wrench with 2 in jaw capacity for gripping and turning pipes.
Precision fastening — PROTO J61929 multi-bit screw and nut driver kit with 26 alloy steel bits for assembly and maintenance.
Tool organization — PROTO JUC3743-3SG heavy-duty utility cart with drawers, power strip, and padlock for shop floor use.
Metric fastener service — PROTO JSCVM-20SB 20-piece ratcheting combination wrench set covering 6 mm to 32 mm.
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PROTO Products

3G Electric supplies PROTO sae, single end, ratcheting 12-point flare nut wrenches. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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