OEM 5.5 x 1 1/2 Self-Drilling Hex Screw with Gasket (200pcs)

OEM 5.5mm Hex Screw

The OEM Self-Drilling Hex Screw facilitates rapid assembly in structural metal environments without the need for manual pilot holes. These 5.5mm x 1 1/2 inch hardware units utilize a hardened drill-point tip to penetrate steel substrates efficiently. The inclusion of a bonded rubber gasket provides a compression seal. This prevents fluid leaks or air bypass in pressurized or outdoor environments. Engineers utilize these fasteners for mounting outdoor enclosures, cable trays, and structural brackets. The zinc-plated finish offers a barrier against galvanic corrosion.

Key Features

• Integrated EPDM Gasket
  The bonded washer absorbs vibration and creates a watertight barrier between the screw head and the substrate.

• Hardened Drill Point

  • Maintains edge integrity during initial metal penetration.
  • Clears metal shavings to prevent thread binding.

• High-Torque Hex Drive
  The external hexagonal head allows for maximum force application without the risk of driver bit slippage.

Specifications

These fasteners demonstrate high pull-out resistance in 12-gauge to 16-gauge steel. The thread engagement remains stable under dynamic loads. This makes them suitable for mounting vibrating equipment or HVAC ductwork. The EPDM washer maintains its seal despite the vibration. This prevents the fastener from backing out or compromising the airtightness of the assembly. The 5.5mm gauge provides high shear strength for heavy-duty load distributions. The 1.5-inch length allows for multi-layer metal fastening or attachment to thick structural members. Thread geometry increases pull-out resistance in cold-rolled steel. The self-drilling tip handles material thicknesses up to 4mm depending on the substrate density. Consequently, installers can bypass the pre-drilling phase for most standard sheet metal applications.

What’s in the Box

• 200 x 5.5mm Hex Head Fasteners with Integrated Gaskets

Why Choose OEM 5.5mm Fasteners

• Eliminates the requirement for separate drilling and tapping stages in metal fabrication.

• The bonded rubber washer maintains a compression seal even under significant thermal fluctuations.

• Zinc plating prevents oxidation in high-humidity server room environments or outdoor enclosures.

• Standard hex drive compatibility allows for high-speed installation with existing power tools.

• Hardened steel construction supports high shear loads in structural mounting applications.