FREE Delivery
Australian Owned
Spend DISCOUNTS
All Categories
Flat Top Metal Screws
Measure across the outside of the thread - not the shank - to get the gauge (a 10g screw measures about 4.8mm). Screw gauges have a wider tolerance than bolts, so treat it as a close match rather than exact. Then measure the length for your head type.
Every product page carries a Screw Gauge and TPI chart for its range - every gauge links straight to the product. For metal: coarse threads bite and hold thin sheet; fine threads (higher TPI) give more grip in thicker steel.
Flat top self drilling screws have the lowest head profile in the BNA self driller range. The head is essentially a flat washer face with no protruding centre - the visible result on the cladding is almost a flush surface. Used for trim, finish, awning fascia and architecturally-exposed cladding where any head projection would compromise the visual line.
Also known as: Flat Pan Screw, Flush Head Tek, Trim Head Tek, Architectural Screw.
10g-16 gauge in coarse thread, 16mm length. Phillips PH2 drive. Galvanised Class 3 or Zinc Yellow Class 4 finish. The 16mm length suits cladding-to-cladding or cladding-to-thin-purlin fastening where the host doesn't extend beyond the standard cladding stack.
GRADES AND MATERIALS
Zinc Yellow (Class 2): zinc plate with a yellow chromate passivation - Class 2 corrosion rating for interior and dry, sheltered work. Galvanised (Class 3, 4, B8 and X9): galvanised and heavy-coated finishes for exterior, structural and coastal exposure - the higher the class, the harsher the environment it suits. Both use a Class-rated steel core for high pull-out and shear strength.
DRIVE AND INSTALLATION
Drive with PH2 Phillips bit at 1500-2500 RPM. The flat head seats almost flush - watch for over-driving which can dimple the cladding face below the head, leaving a visible defect. Set the clutch or impact torque to stop the moment the head meets the cladding.
SIZE AND DRILL CAPACITY
10g-16 gauge (4.80mm shank), 16mm length only. For longer applications, use the wafer or button pan range which provides similar low-profile heads in longer lengths.
WHY AUSTRALIA TRUSTS BOLT & NUT
With 15+ years selling fasteners online from Brisbane, we hold over 25,000 stock lines and 200 million pieces - 98.75% of online orders placed before 1pm leave same day. Save more as you buy more - we offer up to 13 price breaks plus 3 spend-tier discounts. Read our customer reviews or get in touch if you need help picking the right flat top metal screw.
-
Free shipping
In stock
-
Free shipping
In stock
Flat top self drilling metal screws - minimum-profile head sits almost flush with the cladding face for trim, finish and visible cladding work where any head projection is unacceptable.
TECHNICAL RESOURCES
Drill capacity per Tek number, gauge / TPI cross-reference: Technical Resources. Choosing a finish? See our guide to choosing a screw coating, and match the size on our screw gauge sizing chart.
