MS9557-18

Military Standard Machine Bolt

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Description:

Fastener Length: 1-1/4", Thread: 1/4-28, Thread Length: 51/64", MS9557 series bolt

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MS9557-18
MS9557-18
MS9557-18
Add to Cart Up to qty 200 ships same day if ordered before 4pm EST
MS9557-18 Price:
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$4.40 Each
Quantity:
Pre-packaged bag qty: 10 ea
* Sold in increments of 10
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MS9557-18 Datasheet Features and Specification

Thread Class:
3a
Surface Finish:
32.0 microinches threads
Surface Finish:
32.0 microinches grip
Surface Finish:
32.0 microinches bearing surface of head
Minimum Yield Strength:
85000 pounds per square inch
Min. Tensile Strength (psi):
130000 pounds per square inch
Material Specification:
Ams 5731 assn standard single material response
Material:
Iron alloy 660
Head Style:
Double hexagon w/hole
Head Height:
0.300 inches
Hardness Rating:
248.0 brinell standard and 341.0 brinell standard
Grip Length:
Between 0.440 inches and 0.500 inches
Features Provided:
Finished head
Fastener Length:
1.250 inches
Extended Washer Thickness:
Between 0.060 inches and 0.070 inches
Extended Washer Diameter:
0.438 inches
Thread Diameter:
0.250 inches
Thread Direction:
Right-hand
Thread Length:
Between 0.750 inches and 0.810 inches
Thread Qty Per Inch (tpi):
28
Thread Series Designator:
Unjf (fine thread with external controlled root radius)
Width Between Flats:
Between 0.305 inches and 0.313 inches
Quick Specs
Thread Size 1/4
Thread Qty 28
Thread Series UNJF
Thread Class 3A
Material Iron
Length 1-1/4

Additional Information

SKU / Model: MS955718
NSN: 5306-00-106-8813
FSC: Bolts / 5306
Product Series: MS9557
Pack Weight (Approx.) 0.235 lb
Minimum Qty (MOQ): 10
ECCN: EAR99
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
MS9557-18_Military-Fasteners-com.pdf
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Product Image Gallery

Product code MS9557-18
MS9557-18
MS9557-18
MS9557-18

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Customer Reviews

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Excellent service and speedy delivery to Australia. Military Fasteners is our preferred supplier from the USA.

5.0

Very good service, as usual. Order was complete and correct. It is easy to order on your website and the deliveries are always in the specified time.

5.0

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.

5.0

I was looking for hard to find parts for a safety critical application. The first couple of places I tried had the part on their web page but when I tried to order it they said, sorry, they did not actually have the parts. I called Military Fasteners. Talked to an employee without delay. She looked up the part number, told me who manufactured them (important), where the company is located (very important) and shipped the parts immediately from their own inventory. Super nice, helpful, efficient and knowledgeable. They get it.

5.0