AN4DD20A

Aeronautical Standard Bolt

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Description:

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

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AN4DD20A Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.438 inches minimum and 0.516 inches maximum
Fastener Length:
2.016 inches minimum and 2.062 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:
1.547 inches minimum and 1.578 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 2-1/16

Additional Information

SKU / Model: AN4DD20A
NSN: 5306-00-151-1445
FSC: Bolts / 5306
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 5 EA
Schedule B: 7616.10.9090
ECCN: EAR99
National Motor Freight: 013280, Alum Bolts
Download PDF Version
AN4DD20A_Military-Fasteners-com.pdf
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Products are military grade MIL-SPEC as advertised. I was able to locate #10 locking counter-sunk nutplates when ALL other locations, including Aircraft-Spruce, could not supply.

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Excellent service! Trisha Hawkins is so polite, easy to work with and an awesome customer service! Highly recommended!

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Ive been purchasing aircraft parts and hardware from Military Fasteners for over 4 years. That alone should speak volumes. Ive always received excellent customer service and the product quality is unrivaled. When I think of aircraft parts and accessories, Im thinking Military Fasteners. Keep up the excellent work folks! Regards, Ed

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Fast delivery, excellent choice on product that covers all types of aircraft. This range of product makes it easy to rebuild and maintenance your aircraft.

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