Aeronautical Standard Machine Bolt

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length: 2-37/64", grip: 1-15/16", thread: 3/8-24, cadmium plated steel, undrilled shank

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AN6-24A Price:
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$1.58 Each
Pre-packaged bag qty: 20 ea
* Sold in increments of 20
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AN6-24A Datasheet Features and Specification

Fastener Length:
2.578 inches
Features Provided:
Finished head
Grip Length:
1.938 inches
Hardness Rating:
26.0 rockwell c and 32.0 rockwell c
Head Height:
Between 0.203 inches and 0.235 inches
Head Style:
Steel comp 4037 or steel comp 4130 or steel comp 8630 or steel comp 8735 or steel comp 8740 or steel comp 4140
Material Specification:
Mil-b-6812 military specification all material responses
Min. Tensile Strength (psi):
125000 pounds per square inch
Thread Diameter:
0.375 inches
Surface Treatment:
Cadmium and chromate
Surface Treatment Specification:
Cl 3 federal specification all treatment responses type 2 qq-p-416
Thread Class:
Thread Direction:
Thread Length:
0.640 inches
Thread Qty Per Inch (tpi):
Thread Series Designator:
Unf (fine thread)
Width Between Flats:
Between 0.553 inches and 0.565 inches
Quick Specs
Thread Size 3/8
Thread Qty 24
Thread Series UNF
Thread Class 3A
Material Steel

Additional Information

SKU / Model: AN624A
NSN: 5306-00-180-0304
FSC: Bolts / 5306
Product Series: AN6
Pack Weight (Approx.) 1.860 lb
Minimum Qty (MOQ): 20
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
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Product code AN6-24A

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Order was placed with ease, confirmation received in minutes, delivery by UPS ground in one day. Reasonable price, easy installation. Great service as always.


I've never received an incorrect order from ACS, even when dealing with small hardware such as nuts, washers, screws, etc. Shipment is always fast and with reasonable shipment prices for my needs. Even my smallest of orders is processed and ship quickly. I'm a long-time ACS customer and I expect I will be for a long time.


It is very good service. I appreciate Brittany Cornish provide us the parts we ordered.


My company works directly with Military Fasteners, and we have had nothing but positive experiences. Trisha Hawkins, in particular, has been our primary contact. She always responds quickly and works to make sure the order is correct and shipped on time. Military Fasteners is a trusted vendor of ours and we look forward to working with them again in the future!