MS9557-21

Military Standard Machine Bolt

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Description:

Fastener Length: 1-7/16", Thread: 1/4-28, Thread Length: 13/16",

* Manufacturer certifications are shipped with your order FREE of charge
MS9557-21
MS9557-21
MS9557-21
MS9557-21
Add to Cart Up to qty 30 ships same day if ordered before 4pm EST
MS9557-21 Price:
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$18.41 Each
Quantity:
Pre-packaged bag qty: 5 ea
* Sold in increments of 5
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MS9557-21 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.740 inches minimum and 0.820 inches maximum
Fastener Length:
1.428 inches minimum and 1.448 inches maximum
Head Style:
Double hexagon w/hole
Head Height:
0.290 inches minimum and 0.310 inches maximum
Width Between Flats:
0.313 inches nominal
Extended Washer Diameter:
0.428 inches minimum and 0.448 inches maximum
Extended Washer Thickness:
0.060 inches minimum
Thread Diameter:
0.250 inches
Grip Length:
0.628 inches minimum and 0.688 inches maximum
Features Provided:
Finished head
Thready Qty Per Inch (tpi):
28
Min. Tensile Strength (psi):
130000 pounds per square inch
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
Material Specification:
Ams 5731 assn std single material response overall
Thread Series Designator:
Unjf
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Iron
Length 1-7/16

Additional Information

SKU / Model: MS955721
NSN: 5306-01-288-9338
FSC: Bolts / 5306
Product Series: MS9557
Pack Weight (Approx.) 0.131 lb
Minimum Qty (MOQ): 5
ECCN: EAR99
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
MS9557-21_Military-Fasteners-com.pdf
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Product code MS9557-21
MS9557-21
MS9557-21
MS9557-21
MS9557-21

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Customer Reviews

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Ordered on a Monday evening and arrived in New Zealand Friday afternoon. Very good prompt service and the compass was installed on the Saturday after calibration. Thanks Military Fasteners!

5.0

I appreciate your service, especially being able to talk to people who know a lot about aircraft and the many accessories, parts, etc.

5.0

Website didn't show my exact item needed, but their quoting dept got me over a quote ASAP. VIVIAN MANGOLD followed up to make sure I was all set Indeed, I was! Great customer service. Highly recommend.

5.0

Local Guide·"Great customer service from Brittany. She is awesome. Good prices and parts are n stock. Thx Brit for helping with my parts needed on short notice."

5.0