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Labor Day Putting down your wrenches or time for
MORE wrenching? 
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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Dec 2003 Posts: 2,953 'Bolter | | 'Bolter Joined: Dec 2003 Posts: 2,953 | Picked up a tray of sockets and ratchet handles at a swap meet today. Among these were five MAC 3/8 drive 6 point sockets with interesting markings. The markings on the sockets all start with XM then it is 19-6, 18-6, 16-6 and 15-6, all followed by USA. I have no idea. Also picked up a Bonney USA MT18. I think this may be a metric socket.
The best of all was it also included an American-made Husky 1/2 drive with sockets from 1/2 to 1 1/8, all 12 point, an 8" extension and a 9" and 14" pipe wrenches all for $22. The irony is I already have that Husky set and have had it for eons. But I knew it when I got it today. Can't have too many tools! | | | | | Joined: Jul 2008 Posts: 1,321 'Bolter | | 'Bolter Joined: Jul 2008 Posts: 1,321 | There is one for sale on Ebay. Perhaps the seller could answer your question. XM socket Harold
Harold
Is a restoration ever finished? | | | | | Joined: Jan 2008 Posts: 4,960 'Bolter | | 'Bolter Joined: Jan 2008 Posts: 4,960 | I don't know about MAC, but several years ago I had a Snap On socket to break and Snap On wouldn't warranty it because they told me the X meant it was made for the government. I probably did buy it at a pawn shop near Kelly Air Force Base. | | | | | Joined: Apr 2013 Posts: 165 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2013 Posts: 165 | Hi Sedgewick - I believe the numbers indicate metic, six point sockets, which I am sure you have figured out  The xm is a year code that MAC used to represent the years 1997 and 1998. Hope you find this of some help.
36 Chevy 1.5 ton - rusting away
52 Chevy 3100 - in progress
72 Chevy K20 - DD
PANTS UP DON'T LOOT! PANTS UP DON'T LOOT!
NEVER watch another man eat a banana.
| | | | | Joined: Dec 2003 Posts: 2,953 'Bolter | | 'Bolter Joined: Dec 2003 Posts: 2,953 | 5150 - that sounds logical. Will find some metric bolts to see if they fit.
Thanks | | | | | Joined: Dec 2003 Posts: 2,953 'Bolter | | 'Bolter Joined: Dec 2003 Posts: 2,953 | Problem solved! The eBay vendor confirmed they are metric numbers and as mentioned above. | | |
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