MS20004H8

Military Standard Internal Wrenching Bolt

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Description:

MS20004H8 Internal Wrenching Bolt

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MS20004H8 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.475 inches minimum and 0.525 inches maximum
Fastener Length:
0.985 inches minimum and 1.015 inches maximum
Head Style:
Bevel-conical
Head Diameter:
0.428 inches minimum and 0.438 inches maximum
Head Height:
0.250 inches nominal
Hole Diameter:
0.037 inches nominal
Internal Drive Style:
Hexagon
Thread Diameter:
0.250 inches
Width Across Flats:
0.188 inches minimum and 0.190 inches maximum
Hole Quantity:
4
Hole Type:
Drilled
Thready Qty Per Inch (tpi):
28
Min. Tensile Strength (psi):
160000 pounds per square inch
Hardness Rating:
34.0 rockwell c minimum overall and 40.0 rockwell c maximum overall
Hole Configuration Style:
Round longitudinal hole
Material:
Steel comp 4140 overall or steel comp e4340 overall or steel comp 6150 overall or steel comp 8735 overall or steel comp 8740 overall
Material Specification:
Mil-s-5626 mil spec 1st material response overall or mil-s-5000 mil spec 2nd material response overall or mil-s-8503 mil spec 3rd material response overall or mil-s-6098 mil spec 4th material response overall or mil-s-6049 mil spec 5th material response overall
Surface Treatment:
Cadmium overall and chromate overall
Surface Treatment Specification:
Qq-p-416 ty 2 clss 2 fed spec single treatment response overall
Thread Series Designator:
Unf

Additional Information

SKU / Model: MS20004H8
NSN: 5306-00-637-8633
FSC: Bolts / 5306
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 1
Schedule B: 7318.15.2000
ECCN: EAR99
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
MS20004H8_Military-Fasteners-com.pdf
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Bolt Length: 7/8in., Hole Diameter: 1/32in., Thread: 1/4-28, Head Width: 3/16in., Thread Length: 15/32in.

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Recently my avionics technician and I were installing a component in my aircraft and there were some critical fasteners missing from the manufactures package. This stopped the entire process. I called Military Fasteners after finding the parts on line, and Trisha answered the phone. I told her the situation and that I needed them ASAP. I found the parts gave her the part number and she confirmed they were in stock. This was about 430 in the afternoon just before closing. Trisha was kind and professional got the parts out the door that evening even though it was after the shipping cut off. Saved the day. I can tell you this entire company is represented by Trisha, anything they can do to help you out of a jamb they will absolutely go the extra mile and Trisha is the go to person. I am sure there are others there with her same attitude and professionalism. This is a great resource for all your fasteners needs.

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