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:

Thread Direction:

Right-hand

Thread Length:

Between 0.491 inches and 0.562 inches

Thread Qty Per Inch (tpi):

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