Teng Tools Flare Nut Wrench 7/16 x 1/2 in — Chrome Vanadium, DIN 3118, Double-End SAE Line Wrench for Brake and Fuel Fittings
Flare Nut Wrenches · 661416
Flare Nut Wrench 7/16 x 1/2 in
Chrome Vanadium, DIN 3118, Double-End SAE Line Wrench for Brake and Fuel Fittings
- Fast US dispatch from our Fort Worth, Texas warehouse
- Genuine Teng Tools — professional-grade, designed in Sweden
- Secure checkout — encrypted payment, trusted providers
- Backed by guarantee — built to last a working lifetime
Why this one
Multi-sided grip prevents rounding
This wrench is designed to contact multiple sides of the nut at once, reducing the chance of rounding that commonly occurs with standard open end wrenches on soft brass or steel tube fittings.
DIN 3118 construction
Manufactured to the DIN 3118 standard, this tool delivers consistent jaw geometry and dimensional accuracy you can count on.
Double-end design covers two sizes
One end fits 7/16 in nuts and the other fits 1/2 in nuts, giving you two of the most common SAE tube-fitting sizes in a single tool.
Lightweight and easy to handle
Weighing just 77 g (77 g), this wrench is light enough to hold comfortably for extended brake or fuel line jobs without hand fatigue.
Professional individual tool
Sold individually so you buy exactly the size you need, whether you are replacing a lost piece, filling a gap in your collection, or building a custom set one wrench at a time.
Read the full description
When you need to loosen or tighten a tube fitting without rounding the nut, this Teng Tools wrench is built for the task. The slotted ring head slides over the line and grips multiple flats of the nut simultaneously, delivering far more contact area than a standard open end design. That extra grip is critical on soft brass and steel fittings found on brake calipers, fuel rails, transmission coolers, and hydraulic circuits. Constructed from chrome vanadium to the DIN 3118 standard, this tool combines strength with accurate jaw dimensions you can trust job after job. The chrome finish protects against rust and makes cleanup simple — just wipe it down and toss it back in the drawer. The double-end layout puts 7/16 in on one side and 1/2 in on the other, covering two of the most frequently encountered SAE tube-nut sizes in a single, 77 g tool. Whether you are a professional technician servicing vehicles on a lift or a DIYer tackling a weekend project, having the right dedicated wrench for tube nuts saves time and prevents costly damage to fittings. Sold as an individual wrench so you can purchase exactly the size your job requires. Pair it with other Teng Tools wrenches to build a personalized set that matches your workload.
Specifications
| Size | 7/16 × 1/2 in |
|---|---|
| Weight | 2.7 oz (77 g) |
| Part number | 661416 |
Data sheet
Full details from Teng Tools. Download PDF
Lifetime warranty
Send a photo and your order number. Same-day shipping on replacements.
Ships from Texas
From our Fort Worth warehouse.
Questions?
Call (817) 767-3392.
Shipping
Free shipping on orders over $99. Orders are stocked, picked and shipped from our warehouse in Fort Worth, Texas — orders placed on business days ship same-day wherever possible.
Lifetime warranty
Teng Tools hand tools are backed by a lifetime warranty against manufacturing defects. Screwdriver bits and socket bits are consumables and are guaranteed to meet dimensional standards. Torque wrenches and air tools can be serviced and recalibrated on request — contact us to arrange it.
Returns
Not right for the job? Contact us within 30 days of delivery and we'll sort out a return or exchange. Tools must be unused and in their original packaging. Warranty claims are handled separately — a defective tool is our problem, not yours.
Why Teng Tools?
Swedish Design Since 1985
Trusted in 30+ countries. Designed in Sweden, built to ISO and DIN standards.
Shipped Fast from Texas
US warehouse in Fort Worth, so orders move fast. TAA approved for government and defense.
Lifetime Warranty
Something goes wrong? Send a photo and your order number — same-day shipping on replacements.
The Devil Is in the Detail
Satin-finish wrenches, through-blade screwdrivers, heavy-gauge storage — built to last.