AN178H27

Aeronautical Standard Close Tolerance Bolt

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Description:

Fastener Length: 2-63/64", Hole Diameter: 1/16", Thread: 1/2-20, Thread Length: 53/64

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AN178H27 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.749 inches minimum and 0.828 inches maximum
Fastener Length:
2.953 inches minimum and 3.000 inches maximum
Head Style:
Hexagon
Head Height:
0.265 inches minimum and 0.297 inches maximum
Width Between Flats:
0.740 inches minimum and 0.752 inches maximum
Hole Diameter:
0.070 inches nominal
Grip Diameter:
0.4986 inches minimum and 0.4991 inches maximum
Shank Unthreaded Hole Diameter:
0.106 inches nominal first hole
Thread Diameter:
0.500 inches
Grip Length:
2.172 inches minimum and 2.204 inches maximum
Hole Quantity:
1
Hole Type:
Drilled
Thready Qty Per Inch (tpi):
20
Min. Tensile Strength (psi):
125000 pounds per square inch
Hardness Rating:
26.0 rockwell c minimum overall and 32.0 rockwell c maximum overall
Hole Configuration Style:
Hexagon flats
Distance From Head Largest Bearing Surface To Shank Hole Center:
2.781 inches minimum first hole and 2.813 inches maximum first hole
Surface Finish:
63.0 microinches bearing surface of head
Surface Finish:
63.0 microinches grip
Material:
Steel comp 8740 overall or steel comp 8630 overall or steel comp 8735 overall or steel comp 4037 overall or steel comp 4140 overall or steel comp 4130 overall
Material Specification:
Mil-s-6049 mil spec 1st material response overall or mil-s-6050 mil spec 2nd material response overall or mil-s-6098 mil spec 3rd material response overall or ams 6300 assn std 4th material response overall or mil-s-5626 mil spec 5th material response overall or mil-s-6758 mil spec 6th material response overall
Surface Treatment:
Cadmium overall and chromate overall
Surface Treatment Specification:
Qq-p-416,ty2 cl3 fed spec single treatment response overall
Thread Series Designator:
Unf
Quick Specs
Thread Size 1/2
Thread Qty 20
Material Steel
Length 2-63/64

Additional Information

SKU / Model: AN178H27
NSN: 5306-00-151-3087
FSC: Bolts / 5306
Product Series: AN178H
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 2
Schedule B: 7318.15.8085
ECCN: EAR99
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
AN178H27_Military-Fasteners-com.pdf
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More AN178H close tolerance bolts

AN178H24

Fastener Length: 2-19/32", Hole Diameter: 1/16", Thread: 1/2-20, Thread Length: 25/32"

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Customer Reviews

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Great service and lead time. Ships to Canada as well.

5.0

Everything arrived quickly and correctly. I'm a longtime customer and find your service to be always top of the line.

5.0

Devin from shipping dept. was a fantastic help! Great support and service.

5.0

Trisha Hawkins and her team at Military Fasteners are absolutely incredible. We do a lot of Government and Military work and due to this there are a ton of restrictions with what products we can use. I called Military Fasteners (MF) with an extremely HOT request. Trisha was able to source those part numbers, tell me they were in stock and ready to ship. I ordered these on a Wednesday at 4:00pm. They shipped the same exact Wednesday, we received that weeks Friday, even though we were guaranteed Monday/Tuesday. Trisha - THANK YOU! Trisha's Team - THANK YOU! I will only be ordering my military hardware from you all.

5.0