NAS1581C4T4

Close Tolerance Screw

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Description:

length: 0.653", thread: 1/2-28, shear, flush reduced head, cadmium plated corrosion resistant steel, offset cruciform, NAS1581 series screw

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NAS1581C4T4
NAS1581C4T4
NAS1581C4T4
NAS1581C4T4
NAS1581C4T4
NAS1581C4T4
Add to Cart Up to qty 90 ships same day if ordered before 4pm EST
NAS1581C4T4 Price:
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$4.36 Each
Quantity:
Pre-packaged bag qty: 10 ea
* Sold in increments of 10
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NAS1581C4T4 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.378 inches minimum and 0.428 inches maximum
Fastener Length:
0.638 inches minimum and 0.668 inches maximum
Head Style:
Flat countersunk
Head Diameter:
0.350 inches minimum and 0.399 inches maximum
Grip Diameter:
0.2485 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
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 grip
Surface Finish:
32.0 microinches threads
Material:
Iron alloy 660 overall
Material Specification:
Ams 5731 assn std single material response overall or ams 5732 assn std single material response overall or ams 5737 assn std single material response overall
Surface Treatment:
Passivate overall
Surface Treatment Specification:
Qq-p-35 fed spec single treatment response overall
Thread Series Designator:
Unjf
Specification Data:
80205-nas1581 professional/industrial association standard
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Iron
Length 21/32

Additional Information

SKU / Model: NAS1581C4T4
NSN: 5305-01-074-3845
FSC: Screws / 5305
Product Series: NAS1581C
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 10
ECCN: EAR99
National Motor Freight: 093490, Bolt / Nut / Screw / Clips / Fastener / Etc
Download PDF Version
NAS1581C4T4_Military-Fasteners-com.pdf
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More NAS1581C close tolerance screws

NAS1581C6T8P

length: 1.094", thread: 3/8-24 shear 100°, flush reduced head bolt - cadmium plated corrosion resistant steel - offset cruciform

NAS1581C5T8P

length: 1.001", thread: 5/16-24 shear 100°, flush reduced head bolt - cadmium plated corrosion resistant steel - offset cruciform"

NAS1581C4T8

length: 0.903", thread: 1/2-28 shear 100°, flush reduced head bolt - cadmium plated corrosion resistant steel - offset cruciform

NAS1581C4T7

Length: 0.841in., thread: 1/2-28 shear, flush reduced head bolt, cadmium plated corrosion resistant steel, offset cruciform

NAS1581C4T6

Length: 0.778in., thread: 1/2-28 shear flush reduced head cadmium plated corrosion resistant steel offset cruciform

NAS1581C4T5

$2.88 Each, Length: 0.715in., thread: 1/2-28 shear flush reduced head bolt cadmium plated corrosion resistant steel offset cruciform

Product Image Gallery

Product code NAS1581C4T4
NAS1581C4T4
NAS1581C4T4
NAS1581C4T4
NAS1581C4T4
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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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Trish is very responsive and helpful

5.0

Fantastic experience. I ordered the wrong part.....1 call and an RMA issued with the correct part put on the way. Impressive service. Locked me in as a customer for life!

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Quite efficient and one gets the exact items ordered for...would use their services again

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