MS21289-10

Military Standard Bolt

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Description:

Fastener Length: 3/4", Hole Diameter: 5/64", Thread: 1/4-28, Thread Length: 11/16"

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MS21289-10 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.679 inches minimum
Fastener Length:
0.750 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
Hole Diameter:
0.070 inches nominal
Thread Diameter:
0.250 inches
Hole Quantity:
4
Hole Type:
Drilled
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
Hole Configuration Style:
Round
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:
Ams 5732 assn std single material response overall
Thread Series Designator:
Unjf
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Iron
Length 3/4

Additional Information

SKU / Model: MS2128910
NSN: 5306-00-143-1801
FSC: Bolts / 5306
Product Series: MS21289
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 5 EA
Schedule B: 7318.15.8085
ECCN: 9A991
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
MS21289-10_Military-Fasteners-com.pdf
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More MS21289 machine bolts

MS21289-27

Fastener Length: 1-7/8", Hole Diameter: 5/64", Thread: 1/4-28, Thread Length: 3/4"

MS21289-24

Fastener Length: 1-5/8", Hole Diameter: 5/64", Thread: 1/4-28, Thread Length: 3/4"

MS21289-23

Fastener Length: 1-9/16", Hole Diameter: 5/64", Thread: 1/4-28, Thread Length: 3/4"

MS21289-12

Fastener Length: 7/8", Hole Diameter: 5/64", Thread: 1/4-28, Thread Length: 3/4"

MS21289-08

$8.70 EA, Fastener Length: 5/8in., Hole Diameter: 5/64in., Thread: 1/4-28, Thread Length: 9/16in.

MS21289-05

Fastener Length: 7/16in., Hole Diameter: 1/16in., Thread: 1/4-28, Thread Length: 7/16in.

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Customer Reviews

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Hello, I am an Estimator for CAMCO Mfg. Inc. We work with many Prime companies that require Military Fasteners. Kristen Belmont is always the first to respond and gives me great service! She guides me with her knowledge and treats me w/much respect (even when I don't know what I'm talking about) Out of all the outside sources I have to work with, I enjoy working with her best! Rick Donahue CAMCO Mfg. Inc.

5.0

As always, my order was filled accurately and arrived quickly. The one item not in stock in California arrived two days later from another store. Over the years, whether a large order or just a few items,I have received the same quick service. My suggestion? Continue the excellent customer service.

4.0

10/10 service! My go to for all things mil spec hardware. Their customer service team is superb! Trisha had a quote back to us in a matter on minutes. Love working with Military Fasteners

5.0

In dealing with Military Fasteners for 3 plus years, I can honestly say Ive never had a bad experience with the company. Please keep up the great work and youll keep me coming back for as long as I am flying.

4.0