chicane
Well-known member
Anyone know where i can buy an (metric) M7 thread chaser (Internal)? So far I have only found kits and singles that contain even number chasers.
Last edited:
WTB: M7 thread chaser
- Thread starter chicane
- Start date
Internal or external? Mcmaster has M7 chasers.
External:
https://www.mcmaster.com/2667A452/
https://www.mcmaster.com/2573A56/
My old Craftsman kit came with M7 thread cutters but I've never had to use them. Just curious, what are you working on that has M7 fasteners? Very curious.
External:
https://www.mcmaster.com/2667A452/
https://www.mcmaster.com/2573A56/
My old Craftsman kit came with M7 thread cutters but I've never had to use them. Just curious, what are you working on that has M7 fasteners? Very curious.
robert6715
Well-known member
SKU : 56-2002 - Metric Split Rethreading Die M7 x 1.00
Manufacturing professional tools since 1932
www.langtools.com
If you can't find an internal thread chasing tap you can easily make one if the threads you need to restore aren't that badly damaged. Grab a bolt (same size & pitch of course) & grind a slot on the threads. Grind 2 slots if needed and you can even grind an angled slot at the tip.
toddmorr
Well-known member
That is pretty clever. M7 is pretty small so I'd guess the slots would have to be quite thin
Come to think of it I'm pretty sure M6 is the smallest I've done it on so totally doable with M7. I used a dremel for that one. Just one slot should do it for that size. Could probably do M5 too but I don't think I've ever gone smaller than M6 or have ever needed too.
I guess it's an old mechanics' trick, my mentor at the shop I worked at taught me, I was young & amazed. Haha. Then later I realized some OEM bolts in cars come this way, angled groove at the start of the threads to help clean the threads.