Wera 867/4 Z SB Bits, TORX 15 x 89 mm

This bit is part of the PROFFIX Bits range and is supplied individually in packaging suitable for a shop rack (SB). If you want to be sure it fits your screws and tools, first check the size of the screw head and the bit holder of your machine.

Recognising Torx size 15

The number after the letter T indicates the size of the star profile. A T15 requires a screw with a head of the same size, which can often be found in the product description of the screws themselves. A bit that is too small or too large does not fit properly in the screw head and can damage the profile. Therefore, make sure the bit sits firmly in the screw without play before you start turning.

Why a length of 89 mm?

A long bit of 89 mm has more reach than a standard bit of approximately 25 mm. This is useful when the screw is deeply countersunk, in a recess or in a spot that is hard to reach with your machine. For work in open, easily accessible places, a shorter bit is often more practical, as it is less likely to wobble. So choose the length based on how accessible the screw is.

Tips for use and maintenance

Press the bit straight into the screw head and keep your machine in line with the screw, so the profile does not cam out. You can recognise a worn bit by rounded tips or small damage; replace it in good time, because a poorly fitting bit also damages the screw. Keep bits dry and stored in a bit set or bit holder, so they do not rust or get lost.

Frequently asked questions

Does this bit fit every screw driver?

That depends on the chuck of your machine or bit holder. Check that it is suitable for bits with the common hexagonal shank profile before you order.

Which screws is a T15 bit intended for?

For screws with a Torx head in size T15. Check your screws to see which Torx size they require.

What is the difference from a short Torx bit?

Only the length. A bit of 89 mm reaches deeper or further than a short bit, while the size of the star profile stays the same.