SDS HEX RW SCREW WITH CUP WASHER (G12 X 2" / G12 X 2-1/2")

Reference:

Condition: New

2000 Item Items

RM0.60 tax excl.

Size

2"
2-1/2"

Quantity

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Here is the breakdown of the terms:

SDS: Stands for Self-Drilling Screw. This is the most crucial part. It means the screw has a drill-bit tip (often called a TEK point) that allows it to drill its own hole and tap its own threads in one operation, eliminating the need for a separate pilot hole.

HEX: Refers to the Hexagon drive and head shape. This means the screw has a six-sided head, which provides excellent grip for a socket driver, allowing for high torque application without stripping.

RW: Stands for Rubber Washer (or Bonded Washer). This is a metal washer with a vulcanized rubber or EPDM (Ethylene Propylene Diene Monomer) layer bonded to the underside.

The rubber material is weather-resistant and compresses when the screw is fully driven, creating a watertight seal on the surface material (like a roof panel).

CUP WASHER: In this context, this term is often used to describe the flange or the large, integrated washer-like base of the hex head, which perfectly accommodates and holds the separate Rubber Washer (RW) underneath it. It ensures the rubber gasket compresses correctly and evenly for a perfect seal.

In Summary
This screw is a heavy-duty fastener specifically designed for:

Fastening metal to metal or metal to wood (like securing metal roofing or cladding panels).

Creating a weather-tight and waterproof seal due to the bonded rubber washer.

Efficiency, as it drills and fastens in a single step (Self-Drilling).