DeWALT Drillit ® Self-Drilling Metal Screws – Hex Head 100/Packs

Drilit® self-drilling fasteners eliminate separate drilling and tapping for faster, more economical installations. This variant pairs a hex washer head with an EPDM bonded sealing washer to create a reliable, weather-tight seal under metal panels and trims. Available with Stalgard® and Gray Stalgard® corrosion-resistant finishes (typically no red rust after ~1,000 hours per ASTM B117), these screws deliver durable performance in exterior and mixed-material assemblies. Gray Stalgard® is also compatible with ACQ-treated lumber up to 0.25 pcf retention, expanding use cases in wood-adjacent connections.

Key Features

• Self-drilling tip eliminates pre-drilling/tapping for faster installs
  EPDM bonded sealing washer provides a weather-tight seal; common washer Ø: 1/2″, 9/16″, 5/8″ (by size)
• Hex washer head for positive drive and stable seating
• Stalgard® / Gray Stalgard® finishes — enhanced corrosion resistance (ASTM B117 ~1,000 hours)
• ACQ compatibility — Gray Stalgard® suitable with ACQ lumber ≤ 0.25 pcf
• Multiple drill-point options (#2–#5) to match base-material thickness

Applications

• Steel-to-steel connections
• Wood-to-steel connections
• Composite material-to-steel connections

Available Head Styles

• Hex Washer Head with EPDM Bonded Sealing Washer (this page)
• Hex Washer Head (standard)

Drill Point Types

• #2, #3, #4.5, #5 (varies by screw size and material thickness)

Screw Sizes & Thread Options

• Diameters: #8, #10, #12, 1/4″
• Thread counts: 18 TPI (#8), 16 TPI (#10), 14 TPI (#12 & 1/4″), 24 TPI (#12-24)
• Length range: 3/4″ to 4″ (per item table)
• Typical drive sizes: 1/4″ (#8), 5/16″ (#10 & #12), 3/8″ (1/4″)
• Sealing washer diameters: 1/2″ (#8/#10), 9/16″ (#12/#12-24), 5/8″ (1/4″)

Product type: Self-drilling/tapping screws that eliminate pre-drilling and tapping for faster installs. 

Head / seal: Hex Washer Head with EPDM bonded sealing washer for a reliable, weather-tight seal. (Washer Ø varies by size: 1/2″, 9/16″, 5/8″ — see SKU lines below.)

Corrosion protection: Stalgard® / Gray Stalgard® finishes; typically no red rust at ~1,000 hrs ASTM B117. 

Drill-point options: #2, #3, #4.5, #5 (match to base-material thickness). (Per your table.)

Typical drives: 1/4″ (#8), 5/16″ (#10 & #12), 3/8″ (1/4″). (Per your table.)

Size-specific (dimensions, pack, and box weight)

• DFSEHL111 — #10-16 × 3/4″
  Head height 0.26″ · Drive 5/16″ · Washer Ø 1/2″ · Point #3 · Max load-bearing 0.175″ · Min protrusion 1/2″ · Finish Stalgard® · Full Case qty 3,000 | Box weight: ~40.0 lb / 3,000.
• DFSEHL181 — #12-14 × 1″
  Head height 0.305″ · Drive 5/16″ · Washer Ø 9/16″ · Point #3 · Max load-bearing 0.313″ · Min protrusion 5/8″ · Finish Stalgard® · Full Case qty 2,500 | Box weight: ~32.5 lb / 2,500. 
• DFSEHL285 — #12-14 × 2-1/2″
  Head height 0.255″ · Drive 5/16″ · Washer Ø 9/16″ · Point #3 · Max load-bearing 1.863″ · Min protrusion 9/16″ · Finish Stalgard® · Full Case qty 1,000 | Box weight: ~23.0 lb / 1,000. 
• DFSEHL585 — 1/4″-14 × 2″
  Head height 0.305″ · Drive 3/8″ · Washer Ø 5/8″ · Point #3 · Max load-bearing 1.3″ · Min protrusion 5/8″ · Finish Stalgard® · Full Case qty 1,000 | Box weight: ~29.0 lb / 1,000. 
• DFSEHL600 — 1/4″-14 × 3″
  Head height 0.305″ · Drive 3/8″ · Washer Ø 5/8″ · Point #3 · Max load-bearing 2.3″ · Min protrusion 5/8″ · Finish Stalgard® · Full Case qty 800 | Box weight: ~30.4 lb / 800. 

Notes:
• Dimensions (head height, washer Ø, drill-point, load-bearing & protrusion lengths), finishes, and pack quantities are from your provided table.
• Weights are published box weights from distributors; slight variance is normal by supplier/packaging.

Q: What makes DFSEHL165 different from standard Drilit® screws?
A: It includes an EPDM bonded sealing washer that creates a weather-tight seal for exterior applications.

Q: Does this screw still eliminate pre-drilling?
A: Yes — the self-drilling #3 point removes the need for separate drilling or tapping in most metal-to-metal scenarios.

Q: How corrosion-resistant is the finish?
A: It’s coated in Stalgard®, which maintains protection after 1000 hours of ASTM B117 salt spray; Gray Stalgard® option is ACQ-compatible.

Q: Is it code-compliant?
A: Yes — it carries ICC-ES evaluations (ESR-3294, ESR-4367) and meets 2012–2021 IBC/IRC requirements.