NAS1790-4R3

Bolt

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Description:

Fastener Length: 39/64", Thread: 1/4-28, Thread Length: 27/64"

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NAS1790-4R3 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.425 inches nominal
Fastener Length:
0.613 inches nominal
Head Style:
Flat countersunk
Head Diameter:
0.464 inches minimum and 0.506 inches maximum
Grip Diameter:
0.189 nominal inches
Internal Drive Style:
Offset cruciform (torque set)
Thread Diameter:
0.250 inches
Grip Length:
0.188 nominal 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:
Bolt, 100 degree flush head, 160,000 psi uts
Material:
Steel comp 4140 overall or steel comp 4340 overall or steel comp 8740 overall
Surface Treatment:
Cadmium overall
Thread Series Designator:
Unjf
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Steel
Length 39/64

Additional Information

SKU / Model: NAS17904R3
NSN: 5305-01-576-3781
FSC: Screws / 5305
Product Series: NAS1790
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 20 EA
Schedule B: 7318.15.8085
ECCN: EAR99
Download PDF Version
NAS1790-4R3_Military-Fasteners-com.pdf
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NAS1790-5R8

Fastener Length: 63/64", Thread: 1/4-24, Thread Length: 31/64"

NAS1790-5R12

Fastener Length: 25/64in., Hole Diameter: 5/64in., Thread: 5/16-28, Thread Length: 15/32in.

NAS1790-5R11D

Fastener Length: 25/64", Hole Diameter: 5/64", Thread: 5/16-28, Thread Length: 15/32"

NAS1790-4R9

Fastener Length: 63/64", Thread: 1/4-28, Thread Length: 27/64"

NAS1790-4R8

Fastener Length: 11/16", Hole Diameter: 5/64", Thread: 1/4-28, Thread Length: 27/64"

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Customer Reviews

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Another good experience with Military Fasteners, and our Sales Rep, Dan Hunter. We needed hardware for an older aircraft model, and Dan's expertise was exceptional. He quickly identified fasteners, even for parts with unclear descriptions, and provided invaluable technical assistance. The supporting data was spot-on, verified by our technicians. Despite finding slightly lower prices elsewhere, the unmatched service and expertise from Military Fasteners, particularly Dan, make them our preferred choice. Our order was delivered ahead of schedule. Highly recommend MilFast for top-notch service and technical support!

5.0

Trisha was very helpful and knowledgeable. She was very friendly and outgoing.

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

I recently had the pleasure of working with Military Fasteners and I couldn't be more satisfied with the experience. Trisha Hawkins provided exceptional customer service and went above and beyond to ensure I found exactly what I needed. The quality of the fasteners is top-notch and the delivery was prompt. I highly recommend Military Fasteners for their outstanding products and excellent service. Thank you, Trisha, for making the process so smooth and efficient!

5.0