Duro Dyne

Duro Dyne - 14340 - PPF8x1/2 - 1/4" Head x #8 x 1/2" 500 Pack, Self-Drilling and Self-Tapping Screw

Item: DDY14340
MFG: 14340
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PPF8x1/2 - 1/4" Head x #8 x 1/2" 500 Pack, Self-Drilling and Self-Tapping Screw


Several common methods such as rivets, screws, and spot welding are used to fasten materials to ductwork. Three types of screws are most often used. The first is self-tapping only and requires a hole to be drilled before the screw can be utilized. The others are both self-tapping but also create their own holes. Self piercing screws have very sharp points which act much like a scratch awl in making a small opening in the steel for the threads to engage and work the sheet metal into a coned threaded hole. These work well for light gage steel.Self-drilling screws have an integral drill point which creates a large hole for tapping. This allows the screws to be used on heavy gages of steel. The maximum total thickness of steel that the self-drilling screw can be used with is determined by the drill point.

  • Conformance - Meets or exceeds IFI-113 (Revised: August 1, 2007) specifications for Type BSD screws
  • Material - Cold heading quality steel wire
  • Corrosion Resistance - Zinc plated
  • Hardness - Case hardened to Rockwell C52 - 58
  • Head Configuration - Hexagonal unslotted

California residents: see Proposition 65 Warning

Features and Specification

Finish Not Provided
Head Type Not Provided
Height 5.0000
Length 6.0000
Application Not Provided
Brand Duro Dyne
Composition Not Provided
Cubic Measurement 0.0868
Dimensional Weight 1.0000
EAN 0797582059402
Size Not Provided
UPC 797582059402
Width 5.0000
Package Quantity Not Provided
Package Height 5.0000
Package Length 6.0000
Package Weight 2.0000
Package Width 5.0000
SAE or Metric Not Provided
Screw Length Not Provided
Screw Size Not Provided
Weight 2.0000


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