Product Category: Products Self-Clinching Fasteners Fasteners Inch & Metric Captive Screws Panel Screws & Hardware Screws Manufacturer: Penn Engineering Manufacturer Part Number: Penn Engineering PF50-440-1CN Thread Size: 4-40 Drive Type: #1 Phillips Animation: View Animation SKU: PEMPF50-440-1CN Finish Knob: Bright nickel over copper flash per ASTM B689 Finish Retainer: Bright nickel over copper flash per ASTM B689 Finish Screw: Bright nickel over copper flash per ASTM B689 Finish Spring: Natural Finish For Use in Sheet Hardness: HRB 60 or Less (Hardness Rockwell “B” Scale) HB 107 or Less (Hardness Brinell) Material Knob: Carbon Steel Material Retainer: Carbon Steel Material Screw: Carbon Steel Material Spring: 300 Series Stainless Steel Min. Sheet Thickness: .030 in Screw Length Code: 1 Thread Code: 440 Type: Knurled Cap - PF50 A (Shank) Max.: .030 in C Max.: .202 in E ± .010: .406 in G ± .025: .290 in H ± .008: .207 in Hole Size in Sheet + 0.003 - 0.000: .203 in Min. Dist. Hole C/L to Edge: .260 in P ± .025: .060 in T1 Max.: .340 in T2 Nom.: .520 in