Military Standard Aircraft Machine Screw Length: 0.531", Grip: 0.094", Thread: 8-32, Pan head, structural, cadmium plated steel, MS27039 series screw

• NSN: 5305-00-921-0918
• Thread Series Designator: Unc (coarse thread)
• Thread Length: Between 0.345" and 0.484"
• Thread Qty Per Inch (tpi): 32
• Thread Diameter: 0.164"
• Thread Direction: Right-hand
• Screw Surface Treatment Specification: Class 3 federal specification all treatment responses type 2 qq-p-416
• Thread Class: 3a
• Screw Surface Treatment: Cadmium and chromate
• Screw Material Specification: Mil-s-6050 military specification 1st material response or ams 6300 assn standard 2nd material response
• Min. Tensile Strength (psi): 125000 pounds per square inch
• Screw Material: Steel comp 8630 or steel comp 4037
• Head Style: Pan
• Internal Drive Style: Cross recess type 1
• Head Height: Between 0.105" and 0.11"
• Head Diameter: Between 0.306" and 0.322"
• Hardness Rating: Between 26.0 rockwell c and 32.0 rockwell c
• Fastener Length: Between 0.51" and 0.56"