Williams SNPRFW-18 Flare Nut Wrench 9/16 Inch Industrial Black 7 1/4 Inch

The Williams SNPRFW-18 is a flare nut wrench, 9/16 inch, 7-1/4 inch overall length, industrial black, single end, 12 point, 1-1/32 inch head diameter, 3/8 inch head thickness.

A flare nut wrench exists because of a specific and infuriating failure, and understanding it explains the tool entirely.

Brake, fuel, and hydraulic lines terminate in flare nuts — soft fittings, frequently brass or plated steel, threaded onto a tube that passes through the middle of them. Because the tube runs through, a box wrench cannot be slipped over the nut. There is no free end to slide onto.

So people use an open-end wrench, which grips two flats. A flare nut is soft and it is usually corroded solid, and two flats is not enough: the wrench spreads, cams off the corners, and rounds the nut. Now the line has to be cut and replaced, and on a brake system that is a job.

A flare nut wrench is a box wrench with a slot cut in it. The slot passes over the tube; the remaining box grips five of the six flats. That is nearly the strength of a box wrench on a fitting a box wrench cannot reach.

The 3/8 inch head thickness gives it the material to resist spreading.

Applications include brake, fuel, and hydraulic lines.

Brand

Williams

SKU

SNPRFW18

Category

Hand Tools

Weight

0.31 lbs

Dimensions

18.00 x 1.50 x 0.50

Price

$24.95

Availability

In stock

Rating

3.5 / 5.0