Fixings and innovative solutions for pros at CELO

Chipboard screw VELOX® SIT stainless steel A2, partial thread

High Performance from tip to head


The fast chipboard screw VELOX® SIT made of stainless steel A2 with partial thread is perfectly suitable for outdoor applications and obtains an ETA assessment ETA-12/0198 for use in timber construction. The SIT recess guarantees a perfect power transfer, fast mounting and a long-lasting SIT bit. Due the conial recess the screw will be centred (no tumbling) and sticks on the bit and improves your working comfort. Alternatively TX bits can also be used (without the mentioned advantages).

The patented tip thread area reduces splitting of the wood and installation torque. This is for flush fitting and a longer battery life. The sliding coating enables an additional torque reduction.

Diameters Ø4,5, Ø5 and Ø6 of the chipboard screw VELOX® SIT with partial thread have external underhead milling ribs for flush fitting and fewer wood shavings on the surface.
Product overview

Click in a reference to know more. Filter your selection using the options in the "show filters" button:

Click in a reference for further details and use the arrows to see other references. Filter your selection using the options in the "see filters" button:

Show filters

ETA-approved product for your safety

Largely improved working comfort; the conical recess centers the screw (no tumbling) and sticks on the bit|Patented tip thread area

SIT® recess (=AW recess from Würth)

Long-lasting SIT® bit

No damage to the screw head/zinc coating

Perfect power transfer

Only one bit for four screw diameters- you save time and costs!

Can also be used with TX-bits if no SIT®-bit is available

Screws in stainless steel ensure corrosion resistance

Especially well-suited for nylon plugs

Patented thread reduces splitting as well as ­setting torque, which provides a perfect appearance and a longer battery life

With external underhead milling ribs - perfect for wood and metal fittings becaus of flush fitting and fewer wood shavings

With internal underhead milling pockets - perfect for flush finishing in metal fittings

Further specifications:

  • Wood doors
  • Wood windows
  • Fittings
  • Chairs
  • Wood frames
  • Wood furniture

Areas of application:

  • Chipboards
  • Wood

Do you have any questions about this product?

Request more info

Select your Country

You’re visiting CELO Fixings Spain with the product offering available in your region. Click on the button to continue to the International site or close this tab.

Go to International site