Ingco 19mm #8 Professional Truss Head Self-Tapping Screws - 200-Piece Zinc-Plated Carbon Steel Sheet Metal Fastener Pack (HWPS4201921)

Securing sheet metal profiles, electrical junction boxes, plastic brackets, or aluminum trunking using standard wood screws or low-grade fasteners results in stripped threads, loose connections, and structural wobbling over time. Standard fasteners require tedious pre-drilling with separate drill bits, which slows down high-volume assembly lines and increases tool wear. The Ingco HWPS4201921 19mm (#8) Professional Truss Head Self-Tapping Screw Set is an industrial-strength fastening solution engineered to cut its own perfect mating threads upon insertion. Outfitted with an aggressive thread profile and a sharp pointed end, this premium hardware pack enables electrical contractors, HVAC installers, and sheet metal fabricators to lock metal and composite joints together with absolute speed and efficiency.

The exceptional clamping power and fracture resistance of these self-tapping screws stem from their hardened carbon steel core construction. Treated with an advanced bright zinc galvanization layer, these screws heavily resist rust, oxidation, and workshop moisture, making them ideal for both indoor framing and covered outdoor assemblies. The #8 gauge (4.2mm) diameter paired with a versatile 19mm length provides the ultimate trade balance between high shear strength and compact clearance. Featuring a deep, precision-formed Phillips drive recess inside a wide truss head configuration, these screws maximize driver bit engagement to eliminate cam-outs and slippage while providing a broader holding surface. Supplied as a handy 200-piece pack, this kit keeps your workshop ready for clean execution.

Key Features

• Premium Hardened Carbon Steel – Industrial-grade core composition provides exceptional tensile strength and prevents head shearing during high-torque driving.

• Sharp Self-Tapping Pointed End – Precision-engineered aggressive threads cut cleanly through thin sheet metals and plastics without requiring a pilot hole.

• Rust-Resistant Zinc Plating – Finished with a high-grade bright zinc protective coating to defend the raw steel against corrosion and environmental degradation.

• Non-Slip Deep Phillips Truss Head – Extra-wide truss head layout distributes clamping pressure evenly over a broader surface area, while the deep cross recess eliminates bit slip.

• Convenient 200-Piece Pack Sizing – Perfectly balanced quantity for trade toolboxes, keeping active site crews well-supplied without excess bulk.

• Clear Storage Bottle Layout – Packed in a sturdy, re-closable storage bottle for easy stock tracking, clean warehouse inventorying, and spill-free transport.

Technical Specifications

• Brand: INGCO

• Model: HWPS4201921

• Product Type: Professional Industrial Truss Head Self-Tapping Screws

• Screw Sizing (Length): 19 mm (3/4 Inch Fastening Reach)

• Thread Diameter Gauge: ST4.2 (4.2 mm True Core Dimensions)

• Head Type Configuration: Wide Truss Head Profile

• Drive Interface Type: Phillips Cross Recess (PH2 Driver Bit Compatible)

• Total Pack Quantity: 200 Pieces Included per Bottle

• Material Composition Matrix: High-Tensile Case-Hardened Carbon Steel

• Surface Protective Treatment: Bright Zinc Galvanized Anti-Corrosion Layer

• Primary Machine Compatibility: Optimized for corded and cordless 20V impact drivers, drill-drivers, and manual multi-bit screwdrivers

• Primary Target Substrates: Thin structural steel sheets, aluminum sections, copper plates, PVC conduits, acrylic panels, and building softwoods

• Primary Applications: Electrical trunking installation, HVAC duct assembly, automotive interior trim modification, custom metal enclosure fabrication, and dry lining framing

Ideal For

Commercial electricians, HVAC duct installers, auto body fabricators, appliance repair technicians, and trade craftsmen who require a reliable, deep-threaded, and corrosion-resistant 19mm self-tapping screw pack to streamline high-volume sheet metal fastening.

Package Includes

200 × INGCO HWPS4201921 4.2mm x 19mm Self-Tapping Screws 1 × Protective Industrial Storage Bottle Packaging Layout