Part Number NAS1578A4H40 Close Tolerance Screw
SKU: 5305012155338NAS1578A4H40 Close Tolerance Screw Datasheet
National aerospace standards part number NAS1578A4H40
Thread Direction:
Right-hand
Thread Length:
Between 0.378 inches and 0.428 inches
Fastener Length:
Between 2.888 inches and 2.918 inches
Head Style:
Pan no. 2
Head Diameter:
Between 0.477 inches and 0.492 inches
Head Height:
Between 0.140 inches and 0.150 inches
Grip Diameter:
Between 0.2485 inches and 0.2495 inches
Internal Drive Style:
High-torque
Thread Diameter:
0.250 inches
Grip Length:
Between 2.490 inches and 2.510 inches
Thready Qty Per Inch (tpi):
28
Min. Tensile Strength (psi):
160000 pounds per square inch
Hardness Rating:
36.0 rockwell c and 40.0 rockwell c
Surface Finish:
32.0 microinches bearing surface of head
Surface Finish:
32.0 microinches grip
Surface Finish:
32.0 microinches threads
Part Name Assigned By Controlling Agency:
Navy special project
Surface Treatment Specification:
QQ-P-416 type 2 class 2 federal specification single treatment response
Specification Data:
80205-NAS1578 professional/industrial association standard
Manufacturer Cage:
80205
Trade Information:
- Schedule B: 7318152000
- SITC: 69421
- End Use: Iron and steel products, other
- NAICS: 332722
- USDA: 1
Bolts and bolts and their nuts or washers exported in the same shipment
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