MS9557-40

Military Standard Bolt

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Description:

Fastener Length: 3-1/2", Thread: 1/4-28, Thread Length: 3/4"

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MS9557-40 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.750 inches nominal
Fastener Length:
3.500 inches nominal
Head Style:
Double hexagon extended washer
Head Height:
0.300 inches nominal
Width Between Flats:
0.312 inches nominal
Extended Washer Diameter:
0.438 inches nominal
Extended Washer Thickness:
0.060 inches nominal
Thread Diameter:
0.250 inches
Thready Qty Per Inch (tpi):
28
Material:
Iron alloy 660 overall
Material Specification:
Ams 5731-85 assn std single material response overall
Thread Series Designator:
Unjf
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Iron
Length 3-1/2

Additional Information

SKU / Model: MS955740
NSN: 5306-01-483-9353
FSC: Bolts / 5306
Product Series: MS9557
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 5 EA
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
MS9557-40_Military-Fasteners-com.pdf
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I called the customer service line just before Air Venture at Oshkosh to find out if they would have the parts I needed at their booth. The service rep on the phone was very helpful and was able to check the inventory that was taken to Oshkosh.I was told that the parts would not be available but could be shipped from the warehouse without delay. I ordered a full set of intake seals for a Continental 085 on the spot and they arrived in a few days. I am very happy with the service provided, and will be ordering more parts soon! Thank you Larry

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