NAS1221R4E4

Close Tolerance Bolt

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Description:

Fastener Length: 11/16", Thread: 1/4-28, Thread Length: 27/64

* Manufacturer certifications are shipped with your order FREE of charge
NAS1221R4E4
NAS1221R4E4
NAS1221R4E4
NAS1221R4E4
NAS1221R4E4
NAS1221R4E4
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NAS1221R4E4 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.425 inches nominal
Fastener Length:
0.661 inches minimum and 0.691 inches maximum
Head Style:
Flat countersunk
Head Diameter:
0.461 inches minimum and 0.507 inches maximum
Internal Drive Style:
Torque-set ribbed
Thread Diameter:
0.250 inches
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
Part Name Assigned By Controlling Agency:
Navy special project
Screw Material:
Iron alloy 660
Screw Material Specification:
Ama5731 assn std single material response or ama5732 assn std single material response or ams5737 assn std single material response
Screw Surface Treatment:
Passivate
Screw Surface Treatment Specification:
Qq-p-35 fed spec single treatment response
Thread Series Designator:
Unjf
Specification Data:
80205-nas1221 professional/industrial association standard
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Iron
Length 11/16

Additional Information

SKU / Model: NAS1221R4E4
NSN: 5305-01-365-1910
FSC: Screws / 5305
Product Series: NAS1221R4E
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 10
Schedule B: 7318.15.8085
ECCN: EAR99
National Motor Freight: 096640, Screws, Iron Or Steel
Download PDF Version
NAS1221R4E4_Military-Fasteners-com.pdf
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More NAS1221R4E close tolerance bolts

NAS1221R4E6

Fastener Length: 3/8", Thread: 1/2-

NAS1221R4E5

Fastener Length: 3/4", Thread: 1/4-28, Thread Length: 27/64"

NAS1221R4E3

NAS1221R4E3

NAS1221R4E23

Fastener Length: 1-7/16", Thread: 1/2-

Product Image Gallery

Product code NAS1221R4E4
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Military Fasteners provided the supplies needed to repair my prop. They had the exact items I needed, at a good price. My order was delivered in reasonable time, complete with instructions. The end result was a quality repair to get me back flyin again. Thank you! Steve

5.0

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.

5.0

C.A.R.E. Team provided Manufacturer's Certificate of Conformance.

5.0

Trisha Hawkins was extremely helpful and professional. Got my order quoted and processed in under 5 mins.

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