MS21280-12

Military Standard Bolt

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Description:

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

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MS21280-12 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.750 inches minimum and 0.810 inches maximum
Fastener Length:
0.875 inches nominal
Head Style:
Double hexagon w/hole
Head Height:
0.330 inches nominal
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
Grip Length:
0.065 inches minimum and 0.125 inches maximum
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
Surface Finish:
63.0 microinches grip
Material:
Iron alloy 660 overall
Material Specification:
Ams5732 assn std single material response overall
Thread Series Designator:
Unjf
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Iron
Length 7/8

Additional Information

SKU / Model: MS2128012
NSN: 5306-00-402-5753
FSC: Bolts / 5306
Product Series: MS21280
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 5 EA
Schedule B: 7318.15.8085
ECCN: EAR99
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
MS21280-12_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.

MS21280-11

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.

MS21280-08

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

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Very pleased with the customer service I get when I call. My Cessna 182 is always needing a little bit of extra LOVE from Military Fasteners. When I call to order parts, your training and customer service of your order takers are the tops.. They understand what I'm looking for and can help me figure out how to order it. I've upgraded my old normal headsets to your reconditioned Bose X General Aviation Noise Cancelling. These are my first Noise Cancelling headsets and we are very pleased...I've come back and purchased 2 more...You are a very professional group! With your shipping location in Atlanta, sometimes, I get things in 1 day or 2 at the most. Thanks.

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Great customer service. Did a quick research for us to find a replacement. Will buy again.

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Great Customer Service very helpful...Packaged arrived almost the next day. How did you do that. Thank you again. will be doing business with you again soon !!!

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You had what I needed and I had it in 2 days.I always look to military fasteners 1st when I need anything for my airplane.

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