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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I've been using Military Fasteners for a long time and have always been more than satisfied with the service they provide. Craig F

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Highly recommend ... amazing customer service ... always going above and beyond my needs. Kindest Regard, Julie with Tactical Air Support, Inc.

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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!

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