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Rethreading Set

barryg

Active member
It seems that threads are a common bane of the airhead rider. I was a job shop machinist/ tool and die maker for over 25 years so I was constantly machining threads or fixxing them. Machined a lot of threads on the lathe both standard and metric. I've got several fairly extensive tap and die sets, again standard and metric. I see alot of guys run into this on their bikes. Fluid fill and drain holes messed up. Exhaust nut froze on the head. Threads gone or crossthreaded. What a mess. This little set can help in some situations. It contains both metric and standard. They are good to remove nicks and burrs and thread chasing. These are not intended to cut new threads. There are two thread files in the kit. One is out by the bikes being used. Some might want to add this kit to their tool inventory.
 
Metric Taps
6-1.00mm
8-1.25
10-1.50
12-1.25
12-1.50
12-1.75
Metric Dies- Same
Thread File Metric
.75
1.00
1.25
1.50
1.75
2.00
2.50
3.00
And it also has the National Course and National Fine Taps and Dies US Thread Pitch Files.
 
Nice to see your set is actually made in the USA. When I bought my Craftsman metric tap and die set (I think 3-4 years ago) it was made in China, really bummed me out.
 
I've got a set like that. It is used for every engine rebuild I'm involved with. Every fastener and threaded hole get cleaned out, then blown out with air. One item I also use is a wire brush to clean the chasers from all the crud they accumulate. As was noted, these do not cut new threads, so sometimes we must use a tap/die to really do a good job on a messed-up situation.
 
You can buy the pieces individually from Snap-On, and there are more than are shown on the Craftsman kit. The first one I bought was a M10x1 fine-thread for a brake bleeder.
 
Yes, it's a starter kit. I know a lot of guys run a tap in a hole to fix the bad threads and break it off. Now you have a hardened piece of metal in the hole. Bad news. These rethreading pieces are hardened different than taps and dies. Taps in a fresh proper size drilled hole cut evenly in the diam. of the hole, all good. A tap in a oval shaped/cross threaded hole has a good chance of breaking off, Snap, Oh No. I get the call Barry, what do I do. You need the rethreading dies and taps and do it yourself or get a machinist ot tech to fix it.
 
Some times the threaded piece/ hole is beyond repair of just fixxing threads. This leads to helicoils and timeserts, another type of fix.
 
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