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Self-drilling screw mushroom head BTT

Self-drilling screw wider head stainless steel A2 and SIT recess


CELO's self-drilling screw BTT 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 the screw to be kept fixed to the recess when installing. Made of high-quality steel and stainless steel A2.
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Selftapping screw wider head for oversized holes

Non-threaded part to absorb plate expansion

The SIT recess allows a perfect power transfer to the screw thanks to the conial form

Its conical inner shape centers the screwing and allows to keep the screw fixed to the screw bit facilitating its installation

Further specifications:

  • Wood facades
  • Metal facades
  • Metal furniture
  • Garage metal doors
  • Metal structures
  • Metal door
  • Metal assemblies
  • Metal profile fittings

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