Product Category: Products Fasteners Inch & Metric Self-Clinching Fasteners Captive Screws Panel Screws & Hardware Screws Manufacturer: Penn Engineering Manufacturer Part Number: PF11M-0420-0 Thread Size: 1/4-20 Drive Type: Slotted/#3 Phillips Animation: View Animation SKU: PEMPF11M-0420-0 Finish Knob: Natural Finish Finish Retainer: Bright nickel over copper flash per ASTM B689 Finish Screw: Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless Finish Spring: Natural Finish For Use in Sheet Hardness: HRB 80 or Less (Hardness Rockwell “B” Scale) / HB 150 or Less (Hardness Brinell) Material Knob: Aluminum Material Retainer: Heat-Treated Carbon Steel Material Screw: Heat-Treated Carbon Steel Material Spring: 300 Series Stainless Steel Min. Sheet Thickness: .036 in Screw Length Code: 0 Thread Code: 0420 Type: Knurled Cap - PF11M A Max.: .036 in C Max.: .374 in E ± .010: .575 in G ± .025: .290 in Hole Size in Sheet + 0.003 - 0.000: .375 in Min. Dist. Hole C/L to Edge: .460 in P ± .025: .000 in T1 Nom.: .530 in T2 Nom.: .790 in