Self-drilling screw mushroom head BTT

Self-drilling screw wider head and SIT recess for easier screwing
Self-drilling screw mushroom head BTT
Self-drilling screw mushroom head BTT
Product overview

CELO's self-drilling screw BTT mushroom head and SIT recess which brings a perfect fit between recess and screw for easy screwing. The SIT recess allows a perfect transmission of the tightening torque. Its conical inner shape centers the screwing and keeps the screw fixed to the recess, facilitating its installation. Made of high-quality steel and stainless steel with blue zinc plated and aluminium zinc flakes which resist 480 HNS.

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List of references
Filters
Screw material
Steel
Stainless steel A2
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Head diameter [mm]
11
12
Close
Head height [mm]
2.35
2.6
3.1
Close
Reference
94213BTT
94216BTT
94219BTT
94225BTT
94819BTT
94825BTT
9X4825BTT
Diameter [mm]
4.2
4.2
4.2
4.2
4.8
4.8
4.8
Length [mm]
13
16
19
25
19
25
25
Screw material
Steel
Steel
Steel
Steel
Steel
Steel
Stainless steel A2
Head diameter [mm]
11
11
11
11
12
12
12
Head height [mm]
2.35
2.6
2.35
2.6
3.1
3.1
3.1
Point type
Self-drilling
Self-drilling
Self-drilling
Self-drilling
Self-drilling
Self-drilling
Self-drilling
Head type
Mushroom head
Mushroom head
Mushroom head
Mushroom head
Mushroom head
Mushroom head
Mushroom head
Packaging units
500
500
250
250
500
500
500
Packaging type.
Box
Box
Box
Box
Box
Box
Box
A
t
7 / 7 references
Applications
  • Metal profile fittings
  • Metal facades
  • Fittings
Base materials
  • Metal sheet

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