Product Category: Products Self-Clinching Fasteners Fasteners Inch & Metric Captive Screws Panel Screws & Hardware Screws Manufacturer: Penn Engineering Manufacturer Part Number: Penn Engineering PF11MF-0420-2BL Thread Size: 1/4-20 Drive Type: Slotted/#3 Phillips Animation: View Animation SKU: PEMPF11MF-0420-2BL Finish Knob: Natural Finish Finish Retainer: Natural finish Finish Screw: Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless Finish Spring: Natural Finish Material Knob: Aluminum Material Retainer: Aluminum Material Screw: Heat-Treated Carbon Steel Material Spring: 300 Series Stainless Steel Min. Sheet Thickness: .060 in Optional Finish: Knob (aluminum) – Black Anodize Screw (steel and stainless) – Black Nitride Screw Length Code: 2 Thread Code: 0420 Type: Knurled Cap - PF11MF A Max.: .072 in C Max.: .322 in E ± .010: .575 in G ± .025: .410 in Hole Size in Sheet + 0.005 - 0.000: .323 in P ± .025: .084 in T1 Nom.: .530 in T2 Nom.: .790 in