NAS1189E04P8B

Close Tolerance Screw

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Description:

Fastener Length: 1/2", Thread: 4-40, Thread Length: 29/64

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NAS1189E04P8B Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.374 inches minimum and 0.455 inches maximum
Fastener Length:
0.469 inches minimum and 0.500 inches maximum
Head Style:
Flat countersunk
Head Diameter:
0.177 inches minimum and 0.225 inches maximum
Locking Feature:
Patch threads
Internal Drive Style:
Cross recess type 1
Thread Diameter:
0.112 inches
Thready Qty Per Inch (tpi):
40
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 bearing surface of head
Surface Finish:
32.0 microinches threads
Material:
Iron alloy 660 fastener
Material:
Plastic polyamide locking feature
Material Specification:
Ams5737 assn std single material response fastener
Surface Treatment:
Passivate fastener
Surface Treatment Specification:
Qq-p-35 fed spec single treatment response fastener
Thread Series Designator:
Unjc
Specification Data:
80205-nas1189 professional/industrial association standard
Quick Specs
Thread Size 4
Thread Qty 40
Material Iron
Length 1/2

Additional Information

SKU / Model: NAS1189E04P8B
NSN: 5305-01-278-9631
FSC: Screws / 5305
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 5
Schedule B: 7318.15.6080
ECCN: EAR99
National Motor Freight: 156600, Plastic / Rubber Article Viz:
Download PDF Version
NAS1189E04P8B_Military-Fasteners-com.pdf
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NAS1189E04P7N

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NAS1189E04P7B

Fastener Length: 7/16in., Thread: 4-40

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I have been buying from Military Fasteners for the last 6 years... You are always the best...very prompt!! Thank you!!

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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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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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