MS21280-08

Military Standard Bolt

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Description:

Fastener Length: 5/8", Thread: 1/4-28, Thread Length: 35/64"

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MS21280-08 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.544 inches minimum and 0.635 inches maximum
Fastener Length:
0.615 inches minimum and 0.635 inches maximum
Head Style:
Double hexagon w/hole
Head Height:
0.320 inches minimum and 0.340 inches maximum
Width Between Flats:
0.304 inches minimum and 0.313 inches maximum
Extended Washer Diameter:
0.438 inches nominal
Extended Washer Thickness:
0.060 inches minimum and 0.070 inches maximum
Thread Diameter:
0.250 inches
Features Provided:
Finished head
Thready Qty Per Inch (tpi):
28
Min. Tensile Strength (psi):
130000 pounds per square inch
Hardness Rating:
248.0 brinell standard minimum overall and 341.0 brinell standard maximum overall
Minimum Yield Strength:
85000 pounds per square inch
Surface Finish:
32.0 microinches threads
Surface Finish:
63.0 microinches bearing surface of head
Material:
Iron alloy 660 overall
Material Specification:
Ams 5735 assn std single material response overall
Thread Series Designator:
Unjf
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Iron
Length 5/8

Additional Information

SKU / Model: MS2128008
NSN: 5306-00-413-0397
FSC: Bolts / 5306
Product Series: MS21280
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 10 EA
Schedule B: 7318.15.8085
ECCN: EAR99
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
MS21280-08_Military-Fasteners-com.pdf
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More MS21280 machine bolts

MS21280-32

Fastener Length: 2-1/2in., Thread: 1/4-28, Thread Length: 3/4in.

MS21280-28

Fastener Length: 2-1/64", Thread: 1/4-28, Thread Length: 3/4"

MS21280-14

$3.00 EA, Fastener Length: 1in., Thread: 1/4-28, Thread Length: 3/4in.

MS21280-12

Fastener Length: 7/8", Thread: 1/4-28, Thread Length: 3/4"

MS21280-11

Fastener Length: 13/16", Thread: 1/4-28, Thread Length: 3/4"

MS21280-10

$6.60 EA, Fastener Length: 3/4in., Thread: 1/4-28, Thread Length: 11/16in.

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Customer Reviews

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I recently had the pleasure of working with Military Fasteners and I couldn't be more satisfied with the experience. Trisha Hawkins provided exceptional customer service and went above and beyond to ensure I found exactly what I needed. The quality of the fasteners is top-notch and the delivery was prompt. I highly recommend Military Fasteners for their outstanding products and excellent service. Thank you, Trisha, for making the process so smooth and efficient!

5.0

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.

5.0

You ship them right out to me via US mail in a padded envelope. This makes you my go-to company for all my parts needs. When I've asked questions on-line about an item they are answered thoroughly and usually the same day. Thanks Military Fasteners!

5.0

I have dealt with Military Fasteners a few times and they have always been extremely helpful and knowledgeable. Ramona has always been wonderful to work with and goes out of her way to help you find what you need. Definitely recommended!

5.0