Part Number NAS1581C4H4 Close Tolerance Screw

SKU: 5305001632654

NAS1581C4H4 Close Tolerance Screw Datasheet

National aerospace standards part number NAS1581C4H4

Thread Direction:

Right-hand

Thread Length:

Between 0.378 inches and 0.428 inches

Fastener Length:

Between 0.638 inches and 0.668 inches

Head Style:

Flat countersunk

Head Diameter:

Between 0.350 inches and 0.399 inches

Grip Diameter:

Between 0.2485 inches and 0.2495 inches

Internal Drive Style:

High-torque

Thread Diameter:

0.250 inches

Grip Length:

Between 0.240 inches and 0.260 inches

Thready Qty Per Inch (tpi):

Min. Tensile Strength (psi):

160000 pounds per square inch

Countersink Angle:

Between 99.0 degrees and 101.0 degrees

Surface Finish:

32.0 microinches grip

Surface Finish:

32.0 microinches threads

Material Specification:

Ams 5732 assn standard single material response

Surface Treatment Specification:

QQ-P-35 federal specification single treatment response

Specification Data:

80205-NAS1581 professional/industrial association standard

Manufacturer Cage:

80205

Trade Information:

Bolts and bolts and their nuts or washers exported in the same shipment

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