Self-drilling screw mushroom head BTT
Self-drilling screw wider head and SIT recess for easier screwing
Description
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.
The wider head allows the screw to cover oversized holes. The 4.8 mm diameter has an unthreaded part under the head to absorb plate expansion.
The wider head allows the screw to cover oversized holes. The 4.8 mm diameter has an unthreaded part under the head to absorb plate expansion.
Product overview
Advantages
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Show filtersThis oversized hole allows the expansion of the plate absorbing any dilation
The SIT recess allows a perfect power transfer to the screw thanks to the conial form
Further specifications:
- Metal profile fittings
- Metal facades
- Fittings
Areas of application:
- Metal sheet
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