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

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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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Great value for your dollar. Delivery was even quicker than what was quoted. I recommend this company for all of your industrial fastener needs

5.0

Youre team did an excellent job as usual. The sheet metal and grommets arrived in excellent condition and were very well priced which I appreciate. Thanks again. Doug

4.0

AS Always fast and great service by all.

5.0

I just started an Ultra Light project and have been very happy with the orders I've placed with ACS.

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