38mm Heavy Drillscrew, 29mm Washer

Code: FD1HD38W29
£32.90 Incl. VAT

29 In Stock

Code: FD1HD38W29
Availability: 29 In Stock
£32.90 Incl. VAT

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  • Bag of 100,  38mm Heavy Duty drillscrews / tek screws with 29mm bonded washer and 8mm hex head. 
  • Heavy duty drillscrews have a cutting point that will self drill through up to 12mm thick hot rolled steel supports without the need to pre-drill. 
  • 38mm Length with 29mm is commonly used to fix Single Skin Box Profile Translucent GRP Sheets.
  • Ideal for fixing Single Skin Box Profile GRP Sheets directly to RSJ's or Angle Iron supports.
  • Available in 38mm (with 19mm washer for Single Skin Steel sheets, 29mm Washer for GRP sheets) 67mm, 80mm, 105mm, 130mm, 155mm and 190mm lengths
  • We also stock screws for Going into Light Section Steel (cold rolled up to 3mm thick) and Timber.
  • Material - Galvanised
  • Length - 38mm
  • Head - 8mm Hex
  • Washer 29mm
  • Capability - Fixing into steel 3mm to 12mm thick (hot rolled)
  • Screw Diameter - 5.5mm
  • Weight - Up to 3kg (depending on length)


  • 8mm Galvanised head (Can fit a coloured cap to match colour of project)
  • Fixes into Hot Rolled Steel (3mm to 12mm such as RSJ’s)
  • 29mm Washer ideal for fitting GRP Box Profile Sheets.
  • Self Tapping – No need to pre-drill
What is a Heavy Duty Drillscrew?
A Heavy Duty drillscrew is designed to fix Trapezoidal Box profiles or insulated box profiles into Hot Rolled Steels (Such as RSJ’s) which are 3mm-12mm Thick 

What material are they made of?
These Screws are made of galvanised steel.

What are these used for?
This length is typically used to fix single skin box profile steel sheets.

Where are they fixed?
The fixing is designed to be installed into the valley (trough) of the profile.

Do I need anything else?
You will need an 8mm Magnetic Drill Socket to install these with, you may also wish to consider a coloured cap to push onto the screw to protect the head and match the colour of what you are fixing.