Disclaimer: Actual product colors may vary slightly from the images shown due to different monitor settings and lighting conditions during photo shoots.

NAS1581F4T4 Close Tolerance Screw

Product Series: NAS
ECCN: EAR99
Schedule: 7318.15.9000

Manufacturer certifications are shipped with your order FREE of charge

Unit of Measure: EA

Add to Quote

We are currently out of stock of this item. Click the button below to add this item to the quote and receive up to date pricing and availability by email.

Add to Quote

Head Style

Flat countersunk

Material

Steel comp e4340 or steel comp 4140 or steel comp 8740 or steel comp 8735 or steel comp 6150

Surface Treatment

Cl2 federal specification single treatment response ty2 qq-p-416

Thread Class

Countersink Angle: 100.0 degrees
Fastener Length: 0.653 inches
Grip Diameter: Between 0.248 inches and 0.249 inches
Grip Length: Between 0.240 inches and 0.260 inches
Hardness Rating: 36.0 rockwell c and 40.0 rockwell c
Internal Drive Style: Offset cruciform (torque set)
Min. Tensile Strength (psi): 160000 pounds per square inch
Surface Finish: 32.0 microinches threads
Thread Diameter: 0.250 inches
Thread Direction: Right-hand
Thread Length: 0.403 inches
Thread Qty Per Inch (tpi): 28
Thread Series Designator: Unjf (fine thread with external controlled root radius)
Head Diameter: Between 0.350 inches and 0.399 inches