Page 203 - WERA katalógus

Which type of bit is needed for which job?

Impact-Bits are needed when a strong power tool (e.g. 18 volt impact screwdriver) is used.
Impact bits were specifi cally developed to withstand high power tool forces.

Stainless By using stainless steel bits, the formation of rust on stainless steel screws or surfaces is prevented. Rust on
stainless steel mainly occurs from wear particles remaining after screwdriving work with conventional steel
tools. Such steel wear particles adhere to the screw and begin to rust under the infl uence of oxygen and
moisture. They are easily recognisable with their ice-blue banderole.

BDC-Bits are absolutely premium products. They have a softer BiTorsion zone which reduces the hardness of the shaft
by about 20 % in comparison to the drive tip. This means that the peak loads that cause bit breakage and
premature wear are absorbed in this zone – something which enhances the service life of the bits.
The diamond coating lowers the danger of slipping as the minute diamond particles literally "bite" themselves
into the screw head. B stands for BiTorsion. DC stands for diamond coated.

Z-Bits are ductile, tough bits for hard materials such as sheet steel or metal.

TZ-Bits are Z bits with a torsion zone. Torsion bits absorb the damaging peak torque loads in the torsion zone. This
prevents premature wear and enhances the service life of the bits.

BTZ-Bits have an additional tempered BiTorsion zone, which reduces the hardness of the shaft by about 20 % in
comparison to the drive tip. This means that the peak loads that cause bit breakage and premature wear are
absorbed in this zone – something which enhances the service life of the bits.

H-Bits are particularly hard bits for semi-hard materials such as wood.

TH-Bits are H bits with a torsion zone. Torsion bits absorb the damaging peak torque loads in the torsion zone. This Bits
prevents premature wear and enhances the service life of the bits.

BTH-Bits have an additional tempered BiTorsion zone, which reduces the hardness of the shaft by about 20 % in
comparison to the drive tip. This means that the peak loads that cause bit breakage and premature wear are
absorbed in this zone – something which enhances the service life of the bits.

TS-Bits are torsion bits made from stainless steel. S stands for stainless. Suitable for all screwdriving jobs with
stainless steel screws.

A-Bits A stands for aviation. A bits are particularly hard bits with a sharp-edged profi le which e.g. penetrates screw
profi les full of paint (such as on fuselage panels) ensuring a dependable transfer of force between the bit and
the screw.

J-Bits J stands for Japan. J bits have been optimised to suit Asian PH screws. In particular, they are for use with
very small dimensions as set out in the Japanese Camera Standard.

ACR -Bits ACR -Bits: ACR stands for "anti-cam-out ribs". ACR bits have ribs at the drive tip that protect against
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slipping out of the screw head. It is recommended that ACR bits are matched with ribbed ACR screws for
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maximum e ect. ACR reg. trademark of Phillips Screw Company.
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TiN-Bits TiN stands for titanium-nitrite. An extremely hard coating to withstand permanent loads such as during
continual screwdriving operations in series manufacturing.

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