NAS517-4-6 Close Tolerance Machine Screw, 1/4-28, UNF, 0.469 in L Thread, 1/4 in Dia

TECHNICAL INFORMATION

• National Aerospace Standard
• MIL-S-6758/MIL-S-6050/MIL-S-6098/MIL-S-6049 Qualified
• FAA-STD Approved

SPECIFICATIONS

• Diameter: 1/4 in
• Length: 0.844 in
• Thread Size: 1/4-28
• Thread Type: UNF
• Head Type: Flat Countersunk
• Thread Direction: Right Hand
• Material: Alloy Steel
• Drive Type: Phillips
• Finish: Cadmium/Chromate
• Thread Length: 0.469 in
• Thread Class: 3A
• Head Diameter: 0.452 to 0.51 in
• Grip Size: 3/8 in
• Grade: 4130/8630/8735/8740
• Tensile Strength: 160000 psi
• Domestic/Import: Domestic