MS9557-20

Military Standard Machine Bolt

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Description:

Fastener Length: 1-3/8", Thread: 1/4-28, Thread Length: 47/64", MS9557 series bolt

* Manufacturer certifications are shipped with your order FREE of charge
MS9557-20
MS9557-20
MS9557-20
MS9557-20
Add to Cart Up to qty 420 ships same day if ordered before 4pm EST
MS9557-20 Price:
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$5.94 Each
Quantity:
Pre-packaged bag qty: 10 ea
* Sold in increments of 10
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MS9557-20 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.720 inches minimum and 0.740 inches maximum
Fastener Length:
1.365 inches minimum and 1.385 inches maximum
Head Style:
Double hexagon w/hole
Head Height:
0.290 inches minimum and 0.310 inches maximum
Width Between Flats:
0.311 inches minimum and 0.313 inches maximum
Extended Washer Diameter:
0.428 inches minimum and 0.448 inches maximum
Extended Washer Thickness:
0.050 inches minimum and 0.070 inches maximum
Thread Diameter:
0.250 inches
Grip Length:
0.565 inches minimum and 0.625 inches maximum
Features Provided:
Finished head
Thready Qty Per Inch (tpi):
28
Hardness Rating:
24.0 rockwell c minimum overall and 35.0 rockwell c maximum overall
Minimum Yield Strength:
85000 pounds per square inch
Surface Finish:
32.0 microinches bearing surface of head
Surface Finish:
32.0 microinches grip
Surface Finish:
32.0 microinches threads
Material:
Iron alloy 660 overall
Thread Series Designator:
Unjf
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Iron
Length 1-3/8

Additional Information

SKU / Model: MS955720
NSN: 5306-01-056-3506
FSC: Bolts / 5306
Product Series: MS9557
Pack Weight (Approx.) 0.250 lb
Minimum Qty (MOQ): 10
Schedule B: 7318.15.8085
ECCN: EAR99
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
MS9557-20_Military-Fasteners-com.pdf
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Product code MS9557-20
MS9557-20
MS9557-20
MS9557-20
MS9557-20

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Ordering is simple and my parts are always shipped promptly and arrive well packaged. Military Fasteners is always my go-to store when I need something for my homebuilt project.

5.0

Order was correct, complete and shipped quicker than I had expected. Well done

5.0

Props to my saleslady (whose name I have sadly forgotten) for her can do attitude. Fast and efficient yet friendly and thorough. The items arrived nicely padded with brown paper. Im so happy youve stopped using those hard-to-dispose-of styrofoam peanuts. Fast to ship reasonable prices. Just excellent all around!

4.0

Amelia Fato, excellent customer service. Able to provide quick response on requested quotes.

5.0