Williams SNPWS-476 Adj Pin Spanner Wrench Set 6 Pcs

The Williams SNPWS-476 is an adjustable pin spanner wrench set, 6 pieces.

A pin spanner turns a fastener that has no flats at all, and understanding what those fasteners look like explains the tool.

A great many round retaining nuts — bearing lock nuts, collars, hydraulic caps, spindle nuts, pump housings — are cylindrical with holes drilled in them. There is nothing to put a wrench on. The holes are the drive.

A pin spanner has a pin that drops into one of those holes and a handle to turn it. Adjustable means the pin's distance from the pivot can be set, so one wrench serves a range of hole circles rather than needing a dedicated tool per fastener.

The specification that decides whether it works is the pin diameter against the hole. A pin that is too small rocks in the hole and rounds it out — and a rounded drive hole in a bearing retainer is a serious problem, because there are usually only two holes and no other way to turn it. Too large and it will not enter.

The related caution: a pin spanner concentrates all the torque on one small pin in one small hole. Steady force, never shock.

Applications include bearing retainers, hydraulic caps, and machinery.

Brand

Williams

SKU

SNPWS476

Category

Hand Tools

Weight

3.87 lbs

Dimensions

6.00 x 1.50 x 0.50

Price

$220.00

Availability

In stock

Rating

4.72 / 5.0