AN4DD21A

Aeronautical Standard Machine Bolt

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Description:

Fastener Length: 2-9/64", Thread: 1/4-28, Thread Length: 7/16

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AN4DD21A Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.438 inches minimum and 0.516 inches maximum
Fastener Length:
2.141 inches minimum and 2.188 inches maximum
Head Style:
Hexagon
Head Height:
0.140 inches minimum and 0.172 inches maximum
Width Between Flats:
0.428 inches minimum and 0.440 inches maximum
Thread Diameter:
0.250 inches
Grip Length:
1.672 inches minimum and 1.703 inches maximum
Features Provided:
Finished head
Thready Qty Per Inch (tpi):
28
Min. Tensile Strength (psi):
62000 pounds per square inch
Material:
Aluminum alloy overall
Material Specification:
Qq-a-200 fed spec single material response overall or qq-a-225 fed spec single material response overall or qq-a-430 fed spec single material response overall
Surface Treatment:
Oxide film overall and anodize overall
Surface Treatment Specification:
Mil-c-5541 mil spec 1st treatment response overall and mil-a-8625 mil spec 2nd treatment response overall
Thread Series Designator:
Unf
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Aluminum
Length 2-3/16

Additional Information

SKU / Model: AN4DD21A
NSN: 5306-00-151-1444
FSC: Bolts / 5306
Product Series: AN4DD
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 10
ECCN: EAR99
National Motor Freight: 013280, Alum Bolts
Download PDF Version
AN4DD21A_Military-Fasteners-com.pdf
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AN4DDH6A

Machine Bolt 5306-00-275-9644, Fastener Length: 25/32in., Hole Diameter: 3/64in., Thread: 1/4-28, Thread Length: 15/32in.

AN4DDH5A

Fastener Length: 21/32", Hole Diameter: 3/64", Thread: 1/4-28, Thread Length: 15/32"

AN4DDH21A

$8.34 EA, Fastener Length: 2-5/32in., Hole Diameter: 3/64in., Thread: 1/4-28, Thread Length: 15/32in.

AN4DDH15A

Fastener Length: 1-21/32", Hole Diameter: 3/64", Thread: 1/4-28, Thread Length: 15/32"

AN4DDH11A

Fastener Length: 1-5/32", Hole Diameter: 3/64", Thread: 1/4-28, Thread Length: 15/32"

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Everything arrived quickly and correctly. I'm a longtime customer and find your service to be always top of the line.

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Great supplier to work with. Prompt replies to inquiries, accurate information, quick turnaround shipping, personal touch with all communications. Trisha Hawkins has been a great representative for all of our questions and concerns.

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Thanks for the quick delivery! Arrived quickly and in perfect condition. As usual with Military Fasteners. I'll be back!

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