NAS4404-20

Screw

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Description:

Fastener Length: 1-5/8", Thread: 1/4-32, Thread Length: 3/8"

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NAS4404-20 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.355 inches minimum and 0.385 inches maximum
Fastener Length:
1.605 inches minimum and 1.635 inches maximum
Head Style:
Flat countersunk
Head Diameter:
0.456 inches minimum and 0.508 inches maximum
Grip Diameter:
0.2485 inches minimum and 0.2495 inches maximum
Internal Drive Style:
Tri-wing recess
Thread Diameter:
0.250 inches
Grip Length:
1.240 inches minimum and 1.260 inches maximum
Thready Qty Per Inch (tpi):
32
Min. Tensile Strength (psi):
160000 pounds per square inch
Countersink Angle:
99.0 degrees minimum and 101.0 degrees maximum
Surface Finish:
32.0 microinches bearing surface of head
Surface Finish:
32.0 microinches threads
Material:
Steel comp 4340 overall or steel comp 8740 overall
Material Specification:
Mil-s-5000 mil spec 1st material response overall or mil-s-6049 mil spec 2nd material response overall
Surface Treatment:
Cadmium overall and chromate overall
Surface Treatment Specification:
Qq-p-416,ty ii,cl 2 fed spec single treatment response overall
Thread Series Designator:
Unjf
Specification Data:
80205-nas4404 professional/industrial association standard
Quick Specs
Thread Size 1/4
Thread Qty 32
Material Steel
Length 1-5/8

Additional Information

SKU / Model: NAS440420
NSN: 5305-01-195-8382
FSC: Screws / 5305
Product Series: NAS4404
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 15 EA
Schedule B: 7318.15.8085
ECCN: 9A991
Download PDF Version
NAS4404-20_Military-Fasteners-com.pdf
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