Fixings and innovative solutions for pros at CELO
Self-tapping screw mushroom head BTN
Self-tapping screw wider head and SIT recess

Product overview
The self-tapping screw BTN mushroom head and SIT recess has the perfect fit between recess and screw for easy screwing. The SIT recess allows a perfect transmission of the tightening torque. Its conical inner shape centres the screwing and allows to keep the screw fixed to the recess facilitating its installation. Made of high-quality steel, It is available in blue zinc plated.
List of references
Filters
Head height [mm]
Close
2.55
2.7
3.7
Reference
93913BTN
93916BTN
94213BTN
94216BTN
94813BTN
94816BTN
94819BTN
Diameter [mm]
3.9
3.9
4.2
4.2
4.8
4.8
4.8
Length [mm]
13
16
13
16
13
16
19
Screw material
Steel
Steel
Steel
Steel
Steel
Steel
Steel
Suitable for
Metal sheet assembly
Metal sheet assembly
Metal sheet assembly
Metal sheet assembly
Metal sheet assembly
Metal sheet assembly
Metal sheet assembly
Thread
Selftapping thread
Selftapping thread
Selftapping thread
Selftapping thread
Selftapping thread
Selftapping thread
Selftapping thread
Head type
Mushroom head
Mushroom head
Mushroom head
Mushroom head
Mushroom head
Mushroom head
Mushroom head
Head height [mm]
2.55
2.55
2.7
2.7
3.7
3.7
3.7
Packaging units
500
500
500
500
500
250
250
Packaging type.
Box
Box
Box
Box
Box
Box
Box
A
t
7 / 7 references
Applications
- Fittings
- Metal profile fittings
- Fittings in aluminium profiles
- Aluminium doors
- Metal door
- Garage metal doors


Base materials
- Metal sheet
- Metal profile
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