Fixings and innovative solutions for pros at CELO
Self-drilling reduced drill bit ALFST
Self-drilling screw reduced drill bit with low head rivet type

Product overview
CELO's self-drilling screw ALFST with reduced drill bit and low head is designed for drilling thin steel sheets or aluminium sheets less than 2 mm thick. Avoid stripping in the aluminium profile due to the reduced drill point. Made of high-quality steel and blue zinc plated coating.
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94213ALFST
94216ALFST
94219ALFST
94225ALFST
Packaging units
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500
250
Column
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Reference
Screw material
Head diameter [mm]
Head height [mm]
Head type
Suitable for
Packaging units
Packaging type.
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Reference
94213ALFST
94216ALFST
94219ALFST
94225ALFST
Diameter [mm]
4.2
4.2
4.2
4.2
Length [mm]
13
16
19
25
Screw material
Steel
Steel
Steel
Steel
Head diameter [mm]
8.2
8.2
8.2
8.2
Head height [mm]
1.4
1.4
1.4
1.4
Head type
Low head
Low head
Low head
Low head
Suitable for
Aluminium profiles
Aluminium profiles
Aluminium profiles
Aluminium profiles
Packaging units
500
500
500
250
Packaging type.
Box
Box
Box
Box
4 / 4 references are shown
Applications
- Aluminium windows
- Aluminium doors
- Aluminium profiles
- Metal profile fittings
- Fittings in aluminium profiles

Further specifications
Key features:
- Head of great aesthetic simulates a rivet but with the own advantages of the screw
- Special reduced drill bit for drilling steel sheets less than 2 mm thick
- Reduced drill bit to avoid the stripping.
- Designed for aluminium profiles
Base materials:
- Steel sheet
- Aluminium sheet
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