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NAS1154-3 Machine Screw

Product Series: NAS
ECCN: EAR99
Schedule: 7318.15.2091

Unit of Measure: EA

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Head Style

Flat countersunk

Material

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

Surface Treatment

Qq-p-416 type 2 cl 3 federal specification single treatment response

Thread Class

Thread Quantity Per Inch (tpi)

Countersink Angle: Between 99.0 degrees and 101.0 degrees
Fastener Length: Between 0.489 inches and 0.519 inches
Grip Diameter: Between 0.2485 inches and 0.2495 inches
Grip Length: 0.188 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
Specification Data: 80205-nas1154 professional/industrial association standard
Surface Finish: 32.0 microinches grip
Thread Diameter: 0.250 inches
Thread Direction: Right-hand
Thread Length: 0.316 inches
Thread Series Designator: Unjf (fine thread with external controlled root radius)
Head Diameter: Between 0.449 inches and 0.507 inches