NAS1581K4T4

Bolt

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Description:

Fastener Length: 21/32", Thread: 1/4-28, Thread Length: 3/8"

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NAS1581K4T4 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.403 inches nominal
Fastener Length:
0.638 inches minimum and 0.668 inches maximum
Head Style:
Flat countersunk
Head Diameter:
0.3504 inches minimum and 0.3988 inches maximum
Grip Diameter:
0.2490 inches minimum and 0.2495 inches maximum
Internal Drive Style:
Offset cruciform (torque set)
Thread Diameter:
0.250 inches
Grip Length:
0.240 inches minimum and 0.260 inches maximum
Thready Qty Per Inch (tpi):
28
Countersink Angle:
99.0 degrees minimum and 101.0 degrees maximum
Material:
Titanium alloy uns r56400 overall
Material Specification:
Ams4928 assn std single material response overall or ams4967 assn std single material response overall
Thread Series Designator:
Unjf
Specification Data:
80205-nas1581 professional/industrial association standard
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Titanium
Length 21/32

Additional Information

SKU / Model: NAS1581K4T4
NSN: 5305-01-334-0524
FSC: Screws / 5305
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 5 EA
Schedule B: 8108.90.3060
ECCN: EAR99
National Motor Freight: 136500, Metal Noi / Metal Alloys Noi
Download PDF Version
NAS1581K4T4_Military-Fasteners-com.pdf
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I was looking for hard to find parts for a safety critical application. The first couple of places I tried had the part on their web page but when I tried to order it they said, sorry, they did not actually have the parts. I called Military Fasteners. Talked to an employee without delay. She looked up the part number, told me who manufactured them (important), where the company is located (very important) and shipped the parts immediately from their own inventory. Super nice, helpful, efficient and knowledgeable. They get it.

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