NAS1581C4T5

Close Tolerance Screw

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Description:

length: 0.715", thread: 1/2-28, shear, flush reduced head, cadmium plated corrosion resistant steel, offset cruciform, NAS1581 series screw

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NAS1581C4T5
NAS1581C4T5
NAS1581C4T5
NAS1581C4T5
NAS1581C4T5
NAS1581C4T5
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NAS1581C4T5 Datasheet Features and Specification

Countersink Angle:
Between 99.0 degrees and 101.0 degrees
Fastener Length:
Between 0.700 inches and 0.730 inches
Grip Diameter:
Between 0.2485 inches and 0.2495 inches
Grip Length:
Between 0.302 inches and 0.322 inches
Head Diameter:
Between 0.350 inches and 0.399 inches
Head Style:
Flat countersunk
Internal Drive Style:
Offset cruciform (torque set)
Material:
Iron alloy 660
Material Specification:
Ams 5731 assn standard single material response or ams 5732 assn standard single material response or ams 5737 assn standard single material response
Min. Tensile Strength (psi):
160000 pounds per square inch
Thread Diameter:
0.250 inches
Specification Data:
80205-nas1581 professional/industrial association standard
Surface Finish:
32.0 microinches grip
Surface Finish:
32.0 microinches threads
Surface Treatment:
Passivate
Surface Treatment Specification:
Qq-p-35 federal specification single treatment response
Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
Between 0.378 inches and 0.428 inches
Thread Qty Per Inch (tpi):
28
Thread Series Designator:
Unjf (fine thread with external controlled root radius)
Quick Specs
Thread Size 1/4
Thread Qty 28
Thread Series UNJF
Thread Class 3A
Material Iron

Additional Information

SKU / Model: NAS1581C4T5
NSN: 5305-01-077-5804
FSC: Screws / 5305
Product Series: NAS1581C
Pack Weight (Approx.) 0.191 lb
Minimum Qty (MOQ): 20
Schedule B: 7318.15.2095
ECCN: EAR99
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
NAS1581C4T5_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

NAS1581C4T4P

length: 0.653", thread: 1/2-28 shear 100°, flush reduced head bolt - cadmium plated corrosion resistant steel - offset cruciform

Product Image Gallery

Product code NAS1581C4T5
NAS1581C4T5
NAS1581C4T5
NAS1581C4T5
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Recently my avionics technician and I were installing a component in my aircraft and there were some critical fasteners missing from the manufactures package. This stopped the entire process. I called Military Fasteners after finding the parts on line, and Trisha answered the phone. I told her the situation and that I needed them ASAP. I found the parts gave her the part number and she confirmed they were in stock. This was about 430 in the afternoon just before closing. Trisha was kind and professional got the parts out the door that evening even though it was after the shipping cut off. Saved the day. I can tell you this entire company is represented by Trisha, anything they can do to help you out of a jamb they will absolutely go the extra mile and Trisha is the go to person. I am sure there are others there with her same attitude and professionalism. This is a great resource for all your fasteners needs.

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