Fast shipping and the product is genuinely excellent. Highly recommend.
Nancy M.
✓ Homeowner
Can't find the exact part? Request it and we'll source it for you.
The Williams SNP31023 is a 3/8 inch drive locking extension bar, 3 inches.
Locking is the specification and it solves a problem everyone has met and nobody talks about.
A standard extension holds a socket with a spring-loaded ball detent. That detent is a friction fit — it holds the socket well enough for normal work and it lets go under a few specific conditions: pulling the tool off a fastener at an angle, a socket that has gripped a rusty nut tightly, or simple gravity when working overhead.
When it lets go, the socket falls. Into an engine bay, down a frame rail, into a gearbox, into the bottom of a machine — and retrieving it costs half an hour with a magnet and a torch, or it does not get retrieved at all. In aviation and turbine work, a socket that goes somewhere unrecoverable is a foreign object event rather than an inconvenience.
A locking extension has a positive mechanical lock: a collar or a pin that engages the socket and holds it until deliberately released. The socket comes out of the engine bay attached to the tool.
At 3 inches this is the short extension — the one for clearing a shallow obstruction while keeping the ratchet's feel.
Note the source data is minimal. Verify the locking mechanism and finish against Williams' specification.
Need help finding the right part?
Fill out a request and our team will get back to you shortly.
Fast shipping and the product is genuinely excellent. Highly recommend.
Nancy M.
✓ Homeowner
No real complaints. Works fine and feels well made.
Emily V.
✓ Verified Buyer
Does the job nicely. Packaging could be better but no damage.
Lisa J.
✓ Verified Buyer
Exceeded my expectations. Well worth every penny.
Nancy N.
✓ Verified Buyer
Arrived quickly, packaged well, and works like a charm. Five stars.
Ashley N.
✓ Verified Buyer
Arrived quickly, packaged well, and works like a charm. Five stars.
Robert Y.
✓ Verified Buyer
Quality is good. Does exactly what I bought it for.
Mark X.
✓ Verified Buyer
Arrived quickly, packaged well, and works like a charm. Five stars.
Paul P.
✓ Verified Buyer
Reliable and does what it should. Shipping was a touch slow.
Edward Z.
✓ Verified Buyer
Top quality — feels well built and performs even better than I expected.
Edward L.
✓ HVAC Technician
Fit perfectly and did the job the first time. Couldn't ask for more.
Joseph C.
✓ Verified Buyer
Excellent product and great customer service. Will order again.
Miguel H.
✓ Facilities Manager
Did not work for my application. Had to return it.
Richard O.
✓ Verified Buyer
Been using this daily for a month with zero issues. Money well spent.
Melissa K.
✓ Verified Buyer
Perfect fit and finish. You can tell it's a quality part.
Michael I.
✓ HVAC Technician
Perfect fit and finish. You can tell it's a quality part.
Matthew C.
✓ Facilities Manager
Solid, reliable, and exactly as described. Very happy with this purchase.
Michelle M.
✓ Verified Buyer
Decent build and it does the job. Happy enough to reorder.
Michelle G.
✓ Verified Buyer
Reliable and does what it should. Shipping was a touch slow.
Matthew S.
✓ Business Owner
Genuine OEM quality. Installed in minutes and running perfectly.
Ashley E.
✓ Facilities Manager
No complaints at all — did the job perfectly and feels durable.
Trevor K.
✓ Verified Buyer
Average product. Works, but I expected a bit more.
Richard T.
✓ Verified Buyer
Exceeded my expectations. Well worth every penny.
Hassan W.
✓ HVAC Technician
Impressed with how sturdy this is. Does everything I hoped for.
Jennifer M.
✓ Homeowner
Pretty good value. Fit was slightly tight but it went in fine.
Hassan K.
✓ Business Owner
Genuine OEM quality. Installed in minutes and running perfectly.
Mary P.
✓ Maintenance Tech
Impressed with how sturdy this is. Does everything I hoped for.
Daniel G.
✓ Homeowner
Good product. Would have given five stars but the finish had a small mark.
Amanda P.
✓ Verified Buyer
Toll-Free: (945) 427-9519