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Button Pan & Wafer Metal Screws

Button Pan & Wafer Metal Screws

Button Pan & Wafer Metal Screws

Not sure what screw size you have or need?

Two ways to confirm before you order - whichever you already know.

1If you have a screw in hand

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.

Open the screw gauge sizing chart ›

2If you know the gauge

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.

Self drilling tek screw side profile showing where to measure

Self drilling (tek) screw - gauge is measured across the thread, not the drill point.

Wafer and button pan heads are low-profile self drilling screws designed for cladding-to-cladding fastening. They sit close to the cladding face without the projection of a hex flange head, so they don't snag against downstream cladding or finish layers. The flat seat clamps two cladding sheets together without distortion.

Also known as: Wafer Head Screw, Pancake Head Screw, Pan Head Tek, Button Head Tek, Series 500 Screw.

12g-24 standard gauge, Series 500 (Tek 5 drill capacity to 12.5mm steel) - heavy-duty cladding fastener. Fine thread for fastening into thicker host steel. Phillips PH3 drive. Galvanised Class 3 finish. Lengths 32-50mm.

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

Phillips (PH2 or PH3 depending on gauge), Square (SQ2) or Hex - check the per-SKU spec. Run on a powered driver at 1500-2500 RPM for thin sheet, 800-1500 RPM for thicker steel. Set the clutch / impact torque so the head seats flush without crushing the cladding or stripping the host thread.

SIZE AND DRILL CAPACITY

12g-24 gauge (5.50mm shank), Series 500 drill capacity - cuts through full structural section. Lengths 32mm through 50mm. The low-profile head allows easy stacking of cladding layers or downstream finishes over the fastened sheet.

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 wafer or button pan metal screw.

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