MS9557-20

Military Standard Machine Bolt

email this to someone  
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:
buy now
$6.24 Each
Quantity:
Pre-packaged bag qty: 10 ea
* Sold in increments of 10
Add item to quote  

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
Worldwide Shipping In stock and ready to ship!

* report an issue on this page

More MS9557 machine bolts

MS9557-61

Bolt

MS9557-52

Bolt

MS9557-50

Bolt

MS9557-48

Bolt

MS9557-46

Fastener Length: 4-1/4", Thread: 1/4-28, Thread Length: 51/64"

MS9557-45

MS9557-45

Product Image Gallery

Product code MS9557-20
MS9557-20
MS9557-20
MS9557-20
MS9557-20

Have a question

If you require a quote on this or any product please visit our quote request page »

Browse our frequently asked questions page.

You may contact us by phone at +1 (904) 543-6395 or email us using our contact form.

Our hours of operation are 8:00am - 6:00pm EST

Customer Reviews

Google View our Google profile

I have only ordered from Military Fasteners once so far, but I can't even express how happy I was with our order. As a purchasing manager who deals with government contracts (and the strict requirements that come with them), I was beyond thrilled with the flawless paperwork that was provided (free of charge) with the products we ordered. Lindsey was a peach to interact with, and we received our order next day; one of the perks of having a warehouse close by. I am very much so looking forward to to ordering from them again! Response from the owner3 years ago Thank you so much Holly for the kind words. We constantly try and think of new ways to improve the experience for our customers. We strive to make the package presentation upon arrival how we would want as a customer. It truly is an honor to service our customers that support our government and military branches.

5.0

Milfas is a great company to work with. They have good prices and great customer service! Ashili and Lindsey are great to work with.

5.0

As always, doing business with you is a pleasure!!

5.0

Dependable! I KNOW that my orders with military fasteners will go out the same day and that the rare backorder will be shipped without my having to follow up.

5.0