DEWALT Dril-Flex® Self-Drilling Structural Screws — Phillips Wafer Head, Stalgard® - 100-Pk

DEWALT Dril-Flex® Phillips Wafer Head screws combine a hard, self-drilling point with a tougher load-bearing shank to deliver fast drilling, strong clamp load, and resistance to hydrogen-assisted stress corrosion cracking. The low-profile wafer head offers a wide bearing surface that helps reduce pull-through in thin-gauge metal panels and attachments, while the #2 Phillips drive provides familiar, precise control. Stalgard® coating improves corrosion resistance and galvanic compatibility versus standard zinc plating—ideal for dissimilar-metal assemblies including aluminum-to-steel. Dril-Flex® is tested to ICC-ES AC118 (steel-to-steel) and AC500 (miscellaneous materials to steel) and recognized under ICC-ES reports ESR-3332, ESR-4367, and ESR-4374 for IBC/IRC compliance. Multiple sizes will be listed under this parent item. Sold in 100-pack quantities.

Applications

• Steel-to-steel connections in curtain walls, rainscreens, window walls/glazing, and solar panel systems
• Thin-gauge metal panels, clips, and brackets where a low-profile head helps reduce pull-through
• Mixed-metal assemblies (e.g., aluminum-to-steel) requiring corrosion protection (Stalgard® coating)

Available Head Styles

• Phillips Wafer Head (this page)
• Hex Washer Head
• Phillips Undercut Flat Head

Drill Point Types

• Self-drilling points matched to material thickness (varies by size)
• This SKU uses a #3 drill point; heavier gauges may require higher numbers
• Refer to the DEWALT size chart for drill-point selection by diameter/length

Screw Sizes & Thread Options

• DFSEBL530 — #10-24 × 1-1/4": nominal head Ø 0.470", head height 0.050", #2 Phillips, #3 drill point, max load-bearing length 0.781", min protrusion 15/32", alloy steel, max material thickness 0.150", Stalgard® finish
• Thread form: #10-24 self-drilling tapping threads for metal-to-metal fastening
• Additional lengths/sizes may be listed under this parent item
• Sold in 100-pack quantities

Size / Length: #10-24 × 1-1/4" (1.25")

Head / Drive: Phillips wafer head, #2 Phillips; nominal head Ø 0.470", head height 0.050"

Thread: Unified machine thread #10-24 (self-drilling tapping)

Point: #3 self-drilling point (one-pass drilling & tapping)

Material / Finish: Alloy steel with Stalgard® coating

Max Material Thickness: 0.150" total

Max Load-Bearing Length: 0.781"

Min Protrusion Length: 15/32" (≈0.469")

Nominal Shank Ø: ~0.190" (#10 major diameter)

Overall Dimensions (assembled): length 1.25", head Ø 0.470", head height 0.050"

Approx Unit Weight: ~0.13 oz (≈3.6 g) each (estimate)

Approx Pack Weight (100 pcs): ~0.8 lb (≈0.36 kg) (estimate)

Pack Size: Sold in 100-pack quantities

Q: When should I choose a Phillips wafer head?
A: Use the wafer head when you need a low-profile screw with a wide bearing surface to reduce pull-through on thin-gauge metal panels, clips, and trims.

Q: What material thickness can the DFSEBL530 size handle?
A: DFSEBL530 (#10-24 × 1-1/4") with a #3 drill point is rated for up to 0.150" total steel thickness. For thicker stacks, select a different length/point per the size chart.

Q: Are these screws code listed?
A: Yes—Dril-Flex® is ICC-ES recognized (ESR-3332, ESR-4367, ESR-4374) and tested to AC118 (steel-to-steel) and AC500 (misc. materials to steel) for 2012/2015/2018/2021 IBC/IRC compliance.

Q: How does the Stalgard® coating help in mixed-metal installs?
A: It boosts corrosion resistance and galvanic compatibility vs. zinc plating, making it suitable for aluminum-to-steel assemblies. All sizes on this parent page are sold in 100-pack quantities.