AN507-428R20

Aeronautical Standard Screw

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Description:

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

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AN507-428R20 Datasheet Features and Specification

Thread Class:
2a
Thread Direction:
Right-hand
Thread Length:
1.179 inches minimum
Fastener Length:
1.188 inches minimum and 1.250 inches maximum
Head Style:
Flat countersunk
Head Diameter:
0.462 inches minimum and 0.507 inches maximum
Internal Drive Style:
Cross recess type 1
Thread Diameter:
0.250 inches
Thready Qty Per Inch (tpi):
28
Min. Tensile Strength (psi):
55000 pounds per square inch
Hardness Rating:
26.0 rockwell c minimum and 32.0 rockwell c maximum
Countersink Angle:
99.0 degrees minimum and 101.0 degrees maximum
Screw Material:
Steel comp 2330
Screw Material Specification:
Sae assn std single material response
Screw Surface Treatment:
Cadmium
Screw Surface Treatment Specification:
Qq-p-416,ty 1,cl 3 fed spec single treatment response
Thread Series Designator:
Unf
Nondefinitive Specification/std Data:
3 type and 3c style
Departure From Cited Designator:
As modified by material,as modified by min tensile strength,as modified by hardness rating
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Steel
Length 1-1/4

Additional Information

SKU / Model: AN507428R20
NSN: 5305-00-156-2403
FSC: Screws / 5305
Product Series: AN507
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 95 EA
Schedule B: 7318.15.6080
ECCN: EAR99
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
AN507-428R20_Military-Fasteners-com.pdf
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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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