Part Number NAS664-31 Close Tolerance Screw

SKU: 5305002090601

NAS66431 Close Tolerance Screw Datasheet

National aerospace standards part number NAS664-31

Thread Direction:

Right-hand

Thread Length:

Between 0.330 inches and 0.451 inches

Fastener Length:

Between 2.349 inches and 2.379 inches

Head Style:

Flat countersunk

Head Diameter:

Between 0.464 inches and 0.507 inches

Grip Diameter:

Between 0.2490 inches and 0.2495 inches

Internal Drive Style:

Cross recess type 1

Thread Diameter:

0.250 inches

Grip Length:

Between 1.928 inches and 1.948 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:

125.0 microinches top of head

Surface Finish:

32.0 microinches grip

Surface Finish:

32.0 microinches threads

Material Specification:

Nas 621 comp 4AL-4MN, fscm, 80205 assn standard single material response

Specification Data:

80205-NAS664 professional/industrial association standard

Departure From Cited Document:

Asmodified by revision 6

Manufacturer Cage:

80205

Trade Information:

Zirconium and articles thereof nesoi

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