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</head><body text="#000000">I have a good metric tap and die set from
snears in 1972. I also have a couple HF type tie wan, or chi nah
sets. To chase threads, the chepo sets from HF or HD etc. are
sufficient. For cutting new threads, these will do for occasional, odd
holes, but if you have a lot to do, a good set is the way to go.
Hanson, or similar. For mail order, grainger will have them, but high
price.,<br>
<br>
<span>Craig via Mercedes wrote on 4/18/26 1:42\u202fPM:</span><br>
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<pre wrap="">In looking to chase the threads in my 300SD's thermostat housing, I
realized I have a dearth of metric taps and dies.
I know (now) the OM617's thermostat bolts are M6x1.0, as shown by my dial
caliper and thread gauge (picture attached).
What are the other sizes I need to get?
Does anyone have any suggestions?
Craig
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