Fixings and innovative solutions for pros at CELO
Self-tapping screw mushroom head BTN
Self-tapping screw wider head and SIT recess
![Self-tapping screw mushroom head BTN](https://www.celofixings.com/7663-medium_default/selftapping-screw-mushroom-head-btn.jpg)
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
d
J
93913BTN
93916BTN
94213BTN
94216BTN
94813BTN
94816BTN
94819BTN
Diameter [mm]
d
J
3.9
3.9
4.2
4.2
4.8
4.8
4.8
Length [mm]
d
J
13
16
13
16
13
16
19
Screw material
d
J
Steel
Steel
Steel
Steel
Steel
Steel
Steel
Suitable for
d
J
Metal sheet assembly
Metal sheet assembly
Metal sheet assembly
Metal sheet assembly
Metal sheet assembly
Metal sheet assembly
Metal sheet assembly
Thread
d
J
Selftapping thread
Selftapping thread
Selftapping thread
Selftapping thread
Selftapping thread
Selftapping thread
Selftapping thread
Head type
d
J
Mushroom head
Mushroom head
Mushroom head
Mushroom head
Mushroom head
Mushroom head
Mushroom head
Head height [mm]
d
J
2.55
2.55
2.7
2.7
3.7
3.7
3.7
Packaging units
d
J
500
500
500
500
500
250
250
Packaging type.
d
J
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
![](https://celopim.com/global-master/images/a_application-images/6485/image-thumb__6485__productgroup_export_application_image/a_selfltapping_screw_sit_recess.webp)
![](https://celopim.com/global-master/images/a_application-images/6500/image-thumb__6500__productgroup_export_application_image/a_sit_encaje_perfecto.webp)
Further specifications
Key features:
- The SIT recess allows a perfect power transfer to the screw thanks to the conial form
- Can also be used with TX-bits if no SIT®-bit is available
- Its conical inner shape centers the screwing and allows to keep the screw fixed to the screw bit facilitating its installation
- Selftapping screw wider head for oversized holes
Do you have any questions about this product?
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