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Title: Bonnet and door screws cross head size Post by: Nigel on September 23, 2023, 05:35:07 PM Hi,
I thought I had most sizes of bits but these I don't. PZ3 and PH3 don't fit well, appears larger. Is it a PZ4? [edit, no it's not] Nigel Title: Re: Bonnet and door screws cross head size Post by: HFStuart on September 26, 2023, 11:41:09 PM I think they're PH4. My Philips impact driver bit (8mm hex) is a perfect fit - I notice that the flutes (the bits in between the cross) are radiused not cut square and the screw heads are too I've never noticed that with smaller PH sizes.
Title: Re: Bonnet and door screws cross head size Post by: Nigel on September 27, 2023, 08:48:14 PM Thanks Stuart.
I actually pre-empted your comment by ordering a PH4 yesterday. it was my last known option so I'll comment after trying this with my hammer-impact thingy. Nigel |