PH4 Bits

JMT

The Silver Fox 🦊
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@mrblaine, I need some PH4 bits that have good engagement in our stainless fasteners commonly used on the Savvy MUA and corner armor. Mine keep breaking. What do you recommend?
 
I suspect he is after something in a 3/8" square drive socket that will work on a 3/8" impact. Or if he isn't, he should be. I've tried many, best have been the longer ones from Craftsman which are hard to find or have been. After that, the cheap Chinesium versions are worthless. We have moderate success with the Blackhawk stuff and buy a handful at a time because all of them eventually fail.
 
I suspect he is after something in a 3/8" square drive socket that will work on a 3/8" impact. Or if he isn't, he should be. I've tried many, best have been the longer ones from Craftsman which are hard to find or have been. After that, the cheap Chinesium versions are worthless. We have moderate success with the Blackhawk stuff and buy a handful at a time because all of them eventually fail.

Thanks @mrblaine
 
Just broke one from McMaster Carr. Lasted 3-4 bolts.

I have an S-K one that has survived so far
 
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Just broke one from McMaster Carr. Lasted 3-4 bolts.

I have an S-K one that has survived so far

I ordered 3 of the 3/8” impact socket Blackhawk’s that @mrblaine recommended. Should be here in a few days and I’m hoping I can just get my armor off. LOL!
 
I ordered 3 of the 3/8” impact socket Blackhawk’s that @mrblaine recommended. Should be here in a few days and I’m hoping I can just get my armor off. LOL!

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I find that a handheld impact driver works best with phillips style bits. The bit has less tendency to slip out. Also the Pozidriv (PZ) bits grip better.
 
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Well, I broke 2 already. I still have 3 fasteners to remove. 1 of the bits broke immediately. The other one worked on about 7-8bolts. I think they’re galled. Blah.😒
 
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I don’t understand how you guys are having so much trouble. Maybe just settle for using hand tools for the final tightening 🤷‍♂️
 
I don’t understand how you guys are having so much trouble. Maybe just settle for using hand tools for the final tightening 🤷‍♂️

It is almost impossible to get them tight enough without cam out ruining the fastener if you do it manually.