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Airframe Bolt AN4DD21A

Description:

AN4DD21A Details

National Stock Number (NSN) 5306-00-151-1444
Alternate Part Number N/A
Federal Supply Class (FSC) 5306
Unit of Measure (UOM) 2 /Ea.
Thread Class 3a
Thread Direction Right-hand
Thread Length Between 0.438 inches and 0.516 inches
Fastener Length Between 2.141 inches and 2.188 inches
Head Style Hexagon
Head Height Between 0.140 inches and 0.172 inches
Width Between Flats Between 0.428 inches and 0.440 inches
Thread Diameter 0.250 inches
Grip Length Between 1.672 inches and 1.703 inches
Features Provided Finished head
Thready Qty Per Inch (tpi) 28
Min. Tensile Strength (psi) 62000 pounds per square inch
Material Aluminum alloy
Material Specification Qq-a-200 federal specification single material response or qq-a-225 federal specification single material response or qq-a-430 federal specification single material response
Surface Treatment Oxide film and anodize
Surface Treatment Specification Mil-c-5541 military specification 1st treatment response and mil-a-8625 military specification 2nd treatment response
Thread Series Designator Unf

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