Duro Dyne 14177 Self-drilling Self-tapping Screw 1/4 Inch Hex Head 8 X 1/2 Inch Zinc Plated

Product Description

The Duro Dyne 14177 is a self-drilling and self-tapping screw designed for fastening sheet metal and ductwork in HVAC and mechanical systems. This screw features a built-in drill point that eliminates the need for a pre-drilled pilot hole, saving time on the job and reducing the number of steps required to complete a fastening task. HVAC sheet metal technicians, duct fabricators, and mechanical contractors rely on self-drilling screws like the Duro Dyne 14177 because they cut through steel cleanly and tap their own threads in a single operation. The screw measures number 8 in diameter and 1/2 inch in length, with a 1/4 inch hexagonal unslotted head that accepts a standard hex driver or nut driver bit. The hex head design provides excellent torque transfer and reduces the risk of cam-out during installation. The Duro Dyne 14177 meets or exceeds IFI-113 specifications revised August 1, 2007, for Type BSD self-drilling screws, confirming it meets recognized industry standards for dimensional accuracy and mechanical performance. It is manufactured from cold heading quality steel or Stainless 410 series steel and is case hardened to a Rockwell C52 to C58 rating, giving it the hardness needed to drill through heavy gages of sheet steel without tip failure. A zinc plated finish provides corrosion resistance for use in duct systems, air handling units, and other sheet metal assemblies where moisture or condensation may be present. The maximum steel thickness the screw can penetrate is determined by its Pro Point drill tip geometry, making it well suited for standard HVAC ductwork gages. Whether used on rectangular duct, round duct, or sheet metal flanges, this screw delivers fast, reliable fastening for trade professionals who need a product they can count on every time.

• Self-drilling Pro Point tip drills and taps in one step, no pilot hole required
• Case hardened to Rockwell C52 to C58 for reliable penetration through heavy gage steel
• Zinc plated finish for corrosion resistance in sheet metal and ductwork applications

Product Highlights

The Duro Dyne 14177 self-drilling screw is a dependable fastener for HVAC ductwork and sheet metal assembly, combining a hardened Pro Point tip with a zinc plated finish and IFI-113 compliant construction for consistent, professional results.

Product Information

Standard Information

• Brand: DURO DYNE
• Manufacturer Part Number: 14177

Technical Specifications

• Product Type: Self-Drilling Self-Tapping Screw
• Screw Size: 8 x 1/2 inches
• Drive Size: 1/4 inches
• Head Type: Hexagonal Unslotted
• Head Color: Silver
• Material: Cold Heading Quality Steel / Stainless Steel 410
• Finish: Zinc Plated
• Hardness: Case Hardened Rockwell C52 to C58
• Conformance: IFI-113 Type BSD (Revised August 1, 2007)
• System of Measurement: Inch