Description
Aeronautical Standard Machine Bolt
• Hexagon, undrilled Head
• Cotter Pin Hole
• Fine Threads
• UNF-3A
• Material: Steel
• Finish: Cadmium and chromate
• Major Diameter: 0.25 in.
• Thread Per Inch (TPI): 28
• Grip Length: 1.188 in.
• Industry Standard Specification: AIA/NAS NASM3-20
