MS51959-78

Military Standard Machine Screw

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Description:

MS51959-78 Machine Screw

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MS51959-78 Datasheet Features and Specification

Thread Class:
2a
Thread Direction:
Right-hand
Thread Length:
0.338 inches minimum and 0.438 inches maximum
Fastener Length:
0.438 inches nominal
Head Style:
Flat countersunk undercut
Head Diameter:
0.452 inches minimum and 0.507 inches maximum
Head Height:
0.092 inches minimum and 0.107 inches maximum
Internal Drive Style:
Cross recess type 1
Thread Diameter:
0.250 inches
Thready Qty Per Inch (tpi):
20
Min. Tensile Strength (psi):
80000 pounds per square inch
Countersink Angle:
80.0 degrees minimum and 82.0 degrees maximum
Screw Material:
Steel comp 302 or steel comp 303 or steel comp 304 or steel comp 305 or steel comp 316
Screw Material Specification:
66 fed std all material responses
Screw Surface Treatment:
Passivate
Screw Surface Treatment Specification:
Qq-p-35 fed spec single treatment response
Thread Series Designator:
Unc

Additional Information

SKU / Model: MS5195978
NSN: 5305-00-719-5037
FSC: Screws / 5305
Product Series: MS51959
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 10
ECCN: EAR99
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
MS51959-78_Military-Fasteners-com.pdf
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Military Fasteners did an excellent job fulfilling my most recent order. This superior performance is typical for ACS. My order arrived in excellent condition within just 3 days of placing the order. Well done!

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Ryan was extremely helpful and is typical of the type of customer service I am accustomed to when I ask for help at Military Fasteners.

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I have been a customer since Fullerton Air Parts (Flo Irwin). That should speak volumes of the service I have received from Military Fasteners. In the early days, I had a variety of planes and was based out of Orange County Airport. At the time, the airport was surrounded by bean fields. I, and some of my friends, would frequently fly into Fullerton airport for lunch, the pick up whatever supplies we needed from Flo. She was a great lady, and I am glad that she passed on such a wonderful legacy. I am certain that she would be very proud of what she started, and proud of you all for building on her meager beginnings.

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