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NAS1580C4R6 Close Tolerance Bolt

Product Series: NAS
ECCN: EAR99
Schedule: 7318.15.8085

Unit of Measure: EA

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Head Style

Flat countersunk

Material

Iron alloy 660

Surface Treatment

Qq-p-35 federal specification single treatment response

Thread Class

Countersink Angle: Between 99.0 degrees and 101.0 degrees
Fastener Length: Between 0.763 inches and 0.793 inches
Grip Diameter: Between 0.2485 inches and 0.2495 inches
Grip Length: Between 0.365 inches and 0.385 inches
Internal Drive Style: Offset cruciform (torque set)
Material Specification: Ams5731 assn standard single material response or ams5732 assn standard single material response or ams5737 assn standard single material response
Min. Tensile Strength (psi): 16000 pounds per square inch
Special Features: Internal drive ribbed
Specification Data: 80205-nas1580 professional/industrial association standard
Surface Finish: 32.0 microinches grip
Thread Diameter: 0.25 inches
Thread Direction: Right-hand
Thread Length: Between 0.378 inches and 0.428 inches
Thread Qty Per Inch (tpi): 28
Thread Series Designator: Unjf (fine thread with external controlled root radius)
Head Diameter: Between 0.464 inches and 0.507 inches