AN148657

Aeronautical Standard Screw

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Description:

Fastener Length: 9/16", Hole Diameter: 1/16", Thread: 1/4-28, Head Width: 7/32", Thread Length: 9/16"

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AN148657 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.501 inches minimum and 0.572 inches maximum
Fastener Length:
0.552 inches minimum and 0.572 inches maximum
Head Style:
Flat chamfer
Head Diameter:
0.428 inches minimum and 0.448 inches maximum
Head Height:
0.250 inches minimum and 0.270 inches maximum
Hole Diameter:
0.070 inches nominal
Internal Drive Style:
Hexagon
Thread Diameter:
0.250 inches
Width Across Flats:
0.219 inches minimum and 0.221 inches maximum
Hole Quantity:
6
Hole Type:
Drilled
Thready Qty Per Inch (tpi):
28
Hardness Rating:
32.0 rockwell c minimum overall and 36.0 rockwell c maximum overall
Hole Configuration Style:
Round
Surface Finish:
32.0 microinches threads
Surface Finish:
63.0 microinches bearing surface of head
Material:
Steel comp 8740 overall
Material Specification:
Ams 6322 assn std single material response overall
Surface Treatment:
Cadmium overall
Surface Treatment Specification:
Ams 2400 assn std single treatment response overall
Thread Series Designator:
Unf
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Steel
Length 9/16

Additional Information

SKU / Model: AN148657
NSN: 5305-00-286-0013
FSC: Screws / 5305
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 15 EA
Schedule B: 7318.15.2010
ECCN: EAR99
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
AN148657_Military-Fasteners-com.pdf
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More machine screws

AN148859

Fastener Length: 11/16", Hole Diameter: 1/16", Thread: 3/8-24, Head Width: 5/16", Thread Length: 11/16"

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I called the customer service line just before Air Venture at Oshkosh to find out if they would have the parts I needed at their booth. The service rep on the phone was very helpful and was able to check the inventory that was taken to Oshkosh.I was told that the parts would not be available but could be shipped from the warehouse without delay. I ordered a full set of intake seals for a Continental 085 on the spot and they arrived in a few days. I am very happy with the service provided, and will be ordering more parts soon! Thank you Larry

5.0

With ordering parts, I was assisted by Trisha. Extremely helpful, courteous, and professional. When receiving the items, there was a small discrepancy. I contacted Trisha to let her know, and not only did she and another professional, Paige, work with me right there to rectify the situation. They made sure I received new items in a timely manner, at no extra cost. Taking accountability and being serious in keeping with their high standard product has my respect and future business.

4.0

Military Fasteners is the first place I shop for aviation supplies. I have never had a bad experience. Customer support is always exceptional. Thanks

5.0

Phone was answered on the second ring. The order was taken. All requested items were in stock. Got my order delivered to my door 2 days later.

5.0