NAS1581F4T4 Close Tolerance Screw, 1/4 in Dia, 0.635 in L, UNJF, 0.403 in L Thread

TECHNICAL INFORMATION
• FAA-STD Approved

SPECIFICATIONS
• Diameter: 1/4 in
• Length: 0.635 in
• Thread Type: UNJF
• Thread Length: 0.403 in
• Thread Direction: Right Hand
• Thread Class: 3A
• Head Diameter: 0.3504 to 0.3988 in
• Head Type: 100 deg Flat Countersunk
• Thread Size: 1/4-28
• Grip Size: 0.24 to 0.26 in
• Material: Alloy Steel
• Finish: Cadmium
• Domestic/Import: Domestic