NAS1801-4-9

Machine Screw

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Description:

Fastener Length: 37/64", Thread: 1/4-28, Thread Length: 9/16

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NAS1801-4-9 Datasheet Features and Specification

Fastener Length:
Between 0.546 inches and 0.593 inches
Head Height:
0.410 inches
Head Style:
Hexagon
Internal Drive Style:
Cross recess type 1
Thread Diameter:
0.250 inches
Screw Material:
Steel comp e4340 or steel comp 8740
Screw Material Specification:
Mil-s-5000 military specification 1st material response or mil-s6049 military specification 2nd material response or ams-6322 assn standard 2nd material response
Screw Surface Treatment:
Cadmium and chromate
Screw Surface Treatment Specification:
Type 2 class 2 federal specification single treatment response qq-p-416
Specification Data:
80205-nas1801 professional/industrial association standard
Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
Between 0.491 inches and 0.562 inches
Thread Qty Per Inch (tpi):
28
Thread Series Designator:
Unjf (fine thread with external controlled root radius)
Width Between Flats:
Between 0.367 inches and 0.376 inches
Quick Specs
Thread Size 1/4
Thread Qty 28
Thread Series UNJF
Thread Class 3A
Material Steel

Additional Information

SKU / Model: NAS180149
NSN: 5305-01-332-7563
FSC: Screws / 5305
Product Series: NAS1801
Pack Weight (Approx.) 0.261 lb
Minimum Qty (MOQ): 25
ECCN: EAR99
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
NAS1801-4-9_Military-Fasteners-com.pdf
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