Williams SNPTCQJXM24A Torque Wrench Head 24 mm 12 Point J 0.425 Inch 60 ft lb

The Williams SNPTCQJXM24A is a torque wrench head, 24 mm, 0.425 inch J shank, 12 point, maximum torque 60 ft-lb.

Note something worth reading carefully: this 24 mm head carries the same 60 ft-lb maximum as the 11 mm and 14 mm J-shank heads in this range.

That is not an oversight. The limit is the shank, not the fastener. A J shank is 0.425 inch and it will take about 60 ft-lb regardless of what is on the other end of it — so a large head on a small shank is limited by the small shank.

The consequence matters. A 24 mm fastener frequently wants considerably more than 60 ft-lb, and an operator seeing a big head assumes big torque is available. It is not. Exceeding the head's rating breaks the head, and it breaks it at the shank, under load, with a wrench handle attached.

So the head must be matched to the torque required and not to the fastener size. Where a 24 mm fastener needs real torque, the X or Z shank heads in this range are the correct tools — 240 and 480 ft-lb respectively.

The other rule on any interchangeable head: apply the manufacturer's offset correction. Every head moves the fastener away from the wrench's calibrated length, and an uncorrected setting reads low and over-torques.

Brand

Williams

SKU

SNPTCQJXM24A

Category

Hand Tools

Weight

0.26 lbs

Dimensions

3.75 x 1.50 x 1.25

Price

$60.00

Availability

In stock

Rating

3.57 / 5.0