AN4-21A

Aeronautical Standard Machine Bolt

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Description:

length: 2-5/32", grip: 1-11/16", thread: 1/4-28, cadmium plated steel, undrilled shank

* Manufacturer certifications are shipped with your order FREE of charge
AN4-21A
AN4-21A
AN4-21A
AN4-21A
AN4-21A
AN4-21A
Add to Cart Up to qty 650 ships same day if ordered before 4pm EST
AN4-21A Price:
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$0.73 Each
Quantity:
Pre-packaged bag qty: 50 ea
* Sold in increments of 50
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AN4-21A Datasheet Features and Specification

Thread Direction:
Right-hand
Thread Diameter:
0.250 inches
Thread Class:
3a
Surface Treatment Specification:
Class 3 federal specification all treatment responses type 2 qq-p-416
Surface Treatment:
Cadmium and chromate
Min. Tensile Strength (psi):
125000 pounds per square inch
Material Specification:
Mil-b-6812 military specification all material responses
Material:
Steel
Head Style:
Hexagon
Head Height:
Between 0.140 inches and 0.172 inches
Hardness Rating:
26.0 rockwell c and 32.0 rockwell c
Grip Length:
1.688 inches
Features Provided:
Finished head
Fastener Length:
2.156 inches
Thread Length:
0.468 inches
Thread Qty Per Inch (tpi):
28
Thread Series Designator:
Unf (fine thread)
Width Between Flats:
Between 0.428 inches and 0.440 inches
Quick Specs
Thread Size 1/4
Thread Qty 28
Thread Series UNF
Thread Class 3A
Material Steel

Additional Information

SKU / Model: AN421A
NSN: 5306-00-151-1415
FSC: Bolts / 5306
Product Series: AN4
Pack Weight (Approx.) 1.770 lb
Minimum Qty (MOQ): 50
ECCN: EAR99
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
AN4-21A_Military-Fasteners-com.pdf
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Product Image Gallery

Product code AN4-21A
AN4-21A
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I have been a customer for years and have never had a problem with any orders. Please keep up the good work :)

4.0

Everything exactly as ordered! Quick and reasonable cost of shipping. Thanks for the XLNT service.

5.0

Order received thanks. Easy to order online, fast response by Military Fasteners, competitive pricing and hassle free. Good job again, many thanks.

5.0

Another good experience with Military Fasteners, and our Sales Rep, Dan Hunter. We needed hardware for an older aircraft model, and Dan's expertise was exceptional. He quickly identified fasteners, even for parts with unclear descriptions, and provided invaluable technical assistance. The supporting data was spot-on, verified by our technicians. Despite finding slightly lower prices elsewhere, the unmatched service and expertise from Military Fasteners, particularly Dan, make them our preferred choice. Our order was delivered ahead of schedule. Highly recommend MilFast for top-notch service and technical support!

5.0