AN4DD12A

Aeronautical Standard Bolt

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Description:

Fastener Length: 1-17/64", Thread: 1/4-28, Thread Length: 7/16"

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AN4DD12A Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.438 inches minimum and 0.516 inches maximum
Fastener Length:
1.266 inches minimum and 1.312 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:
0.797 inches minimum and 0.828 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 1st material response overall or qq-a-225 fed spec 2nd material response overall or qq-a-430 fed spec 3rd material response overall
Material Specification:
Qq-a-200 fed spec 1st material response or qq-a-225 fed spec 2nd material response or qq-a-430 fed spec 3rd material response overall
Surface Treatment:
Oxide film overall and anodize overall
Surface Treatment:
Oxide film 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
Surface Treatment Specification:
Mil-c-5541 mil spec 1st treatment response 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 1-5/16

Additional Information

SKU / Model: AN4DD12A
NSN: 5306-00-151-1052
FSC: Bolts / 5306
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 5 EA
Schedule B: 7318.15.8085
ECCN: 9A991
National Motor Freight: 013280, Alum Bolts
Download PDF Version
AN4DD12A_Military-Fasteners-com.pdf
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Military Fasteners provided the supplies needed to repair my prop. They had the exact items I needed, at a good price. My order was delivered in reasonable time, complete with instructions. The end result was a quality repair to get me back flyin again. Thank you! Steve

5.0

Very pleased with my order. Everything in my order was exactly what I had ordered and the price was fair. Delivered within two days of placing order.

5.0

I placed this order late at 4:15 over the phone, 15 minutes past the cut off time.(Which rarely happens) It was critical for us to get the sparkplugs as a customer had called me and scheduled to bring his plane in the next day to have all his plugs replaced. My sales agent said she would personally go and pull the product so it would ship that day, and she did what she said. She saved me the embarrassment of telling my customer I forgot to order his parts on time and making him reschedule a maintenance visit. I am thankful you have people like her who really care about the customer and want to put in the extra effort for customer service. In my aircraft maintenance business I purchase everything I can first from Military Fasteners before I go looking for other venders. I use Military Fasteners because of the great customer service, free shipping (which is one day ground), large selection on hardware and materials, and competitive prices. I am a loyal customer and I order 2-3+ times a week. Thank you for the great service that your people provide at Military Fasteners.

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Excellent service all round. The parcel arrived on my doorstep, in a regional Australian town, on the morning of the fifth day after placing my order.

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