Williams SNPTCQXXM27A Torque Wrench Head 27 mm 12 Point X 0.735 Inch 240 ft lb

The Williams SNPTCQXXM27A is a torque wrench head, 27 mm, 0.735 inch X shank, 12 point, maximum torque 240 ft-lb.

The X shank is the heavy class in this range and the numbers show the system clearly.

A J shank is 0.425 inch and rated around 60 ft-lb. This X shank is 0.735 inch and rated 240 — nearly six times the torque on a shank less than twice the diameter. That is not a coincidence. Torsional strength scales with the cube of the diameter, so a modest increase in shank size buys a large increase in capacity, and the shank sizes in this system are chosen to step through the useful torque range.

It also means the shank is the honest limit. A big head on a small shank is a small-torque tool.

Which is why the shanks are physically incompatible. An X head does not fit a J wrench, and the geometry rather than the operator's judgement enforces the rating.

At 240 ft-lb this is structural and heavy equipment work — and the offset correction matters more here, not less. A large head has a large offset, and an uncorrected setting on a 240 ft-lb fastener is a large absolute error.

Apply the manufacturer's correction formula. Every time.

Twelve points engage every thirty degrees, which is access rather than grip.

Brand

Williams

SKU

SNPTCQXXM27A

Category

Hand Tools

Weight

0.48 lbs

Dimensions

4.00 x 1.50 x 1.25

Price

$110.00

Availability

In stock

Rating

4.43 / 5.0