100 PIECES #8 X 1/2 Pan Round Button Head Tapping Sheet Metal Wood Screw Black Oxide (100). Condition is New. Shipped with USPS First Class Package. MaterialBlack-Oxide SteelScrew SizeNo. 8Screw Size Decimal Equivalent0.164″Length1/2″HeadDiameter0.322″Height0.115″Drive SizeNo. 2Drive StylePhillipsDrill Bit SizeNo. 29Drill Bit Decimal Size Equivalent0.136″Maximum Drilling Thickness0.025″ Thread DirectionRight HandThreadingFully ThreadedTapping MethodThread Forming

50 pieces 8-32 X 1/2 Phillips Round Head Machine Screw Black Oxide Thread Size8-32Length1/2″ThreadingFully ThreadedHead Diameter0.309″Head Height0.120″Drive StylePhillipsDrive SizeNo. 2MaterialBLACK OXIDEHardnessRockwell B69Tensile Strength60,000 psiScrew Size Decimal Equivalent0.164″Thread TypeUNCThread SpacingCoarseThread FitClass 2AThread DirectionRight HandHead TypeRoundedRounded Head StyleRoundRounded Head ProfileStandardSystem of MeasurementInch

Also known as Keps and K-Lock nuts, these locknuts have a free-spinning tooth lock washer that grips the material surface instead of threads for easy installation and mild vibration resistance. Height includes the thickness of the washer. 100 pieces 1/4-20 Keps Locknuts Star External Lock Washer BLACK Oxide 7/16″ wide overall We are a stocking fastener distributer in business since 1948 please buy with confidence.