851/1 BDC SB Bits PH 1 x 25 mm

This page is in the Bits category, under hand tools. Below you can read which screws this size is suitable for and how to choose a bit that suits your job.

What does PH 1 x 25 mm mean?

PH stands for Phillips, the cross-head profile commonly found on screws used in wood, sheet metal and plastic. The number 1 indicates the size of the tip: PH 1 is one of the smaller sizes, intended for finer screws. The 25 mm is the total length of the bit. This is the common short version that fits standard bit holders and screwdriving machines.

Which screws do you use a PH 1 bit for?

A PH 1 bit is meant for small Phillips screws, for example in light assembly, housings, hinges and fasteners with a small head. If you use a size that is too large or too small, the tip will not fit properly in the head. As a result, the bit can slip and damage the screw head. So always check the size indicated on the screw or packaging first.

How to choose the right bit

Pay attention to three things: the profile (Phillips, Pozidriv, Torx or hex), the size and the length. Phillips and Pozidriv look alike, but they are not interchangeable without a poorer fit. A short 25 mm bit is handy for work in an open area, while for deep or hard-to-reach screws you often need a longer bit. Press the bit straight and firmly into the head while screwing, so it lasts longer.

Frequently asked questions

Does this bit fit in a cordless screwdriver?

A 25 mm bit is intended for use in a bit holder or in the bit socket of a screwdriving machine or cordless screwdriver. If in doubt, check whether your machine has a standard bit socket.

Is a PH 1 bit the same as a Pozidriv bit?

No. Phillips (PH) and Pozidriv (PZ) have different profiles. Preferably use the profile that belongs to the screw, so the bit sits firmly.

Can I also order this bit by phone or by email?

Yes, at Proffix you can order via the webshop, by phone or by email. If an item is not in stock, Proffix will get it for you.