Part Number NAS1581K4T12 Close Tolerance Screw
SKU: 5305014869906NAS1581K4T12 Close Tolerance Screw Datasheet
National aerospace standards part number NAS1581K4T12
Thread Direction:
Right-hand
Thread Length:
Between 0.378 inches and 0.428 inches
Fastener Length:
Between 1.138 inches and 1.168 inches
Head Style:
Flat countersunk
Head Diameter:
Between 0.350 inches and 0.399 inches
Grip Diameter:
Between 0.2490 inches and 0.2495 inches
Internal Drive Style:
Offset cruciform (torque set)
End Application:
C-17A acft
Thread Diameter:
0.250 inches
Grip Length:
Between 0.802 inches and 0.822 inches
Thready Qty Per Inch (tpi):
28
Countersink Angle:
Between 99.0 degrees and 101.0 degrees
Surface Finish:
32.0 microinches threads
Surface Finish:
32.02 microinches grip
Part Name Assigned By Controlling Agency:
Screw close tolerance
Material Specification:
AMS4967, comp 6AL-4V assn standard single material response
Manufacturer Cage:
80205
Trade Information:
- Schedule B: 8109900000
- SITC: 69987
- End Use: Finished metal shapes
- NAICS: 331491
- USDA: 1
Zirconium and articles thereof nesoi
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