Williams SNPISSXTM915 Extension 1/2 Inch Black Oxide 15 mm 6-Point 243.1 mm

The Williams SNPISSXTM915 is a 1/2 inch drive tool with a 15 mm 6-point socket, black oxide, 243.1 mm shank length, 22.7 mm socket diameter, 26.9 mm socket length, 10.7 mm hex depth, metric, 217 Nm maximum torque.

Note that the source calls this an extension. It is not — an extension has a square drive at both ends and carries no socket. This has a socket on it. What it appears to be is a long-shank socket: a 15 mm socket permanently on a 243 mm shank with a 1/2 inch drive. That is a distinct and useful product and the listing is describing the wrong one. Correct it, because a customer searching for an extension will buy this and get something else entirely.

What a long-shank socket does that an extension and socket cannot is fit where a joint will not. An extension plus a socket has a square connection between them, and that connection has a diameter — inside a deep recess or a narrow bore, the joint fouls the walls. A one-piece long-shank socket has no joint. It goes down the hole.

The stated 217 Nm maximum torque is worth noting: a stated torque limit on a socket is unusual and useful, and it exists because a 243 mm shank is a torsional spring.

Black oxide is a mild corrosion finish rather than an impact rating. Verify before using on a gun.

Brand

Williams

SKU

SNPISSXTM915

Category

Hand Tools

Weight

0.74 lbs

Dimensions

8.00 x 4.00 x 1.50

Price

$129.95

Availability

Call for pricing

Rating

4 / 5.0