MS51966-66

Military Standard Machine Screw

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Description:

Fastener Length: 7/8", Thread: 1/4-28, Head Width: 1/8", Thread Length: 7/8", setscrew

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MS51966-66 Datasheet Features and Specification

Thread Class:
3a
Thread Direction:
Right-hand
Thread Length:
0.860 inches minimum and 0.890 inches maximum
Fastener Length:
0.860 inches minimum and 0.890 inches maximum
Head Style:
Headless (setscrew)
Point Style:
Flat
Internal Drive Style:
Hexagon
Thread Diameter:
0.250 inches
Width Across Flats:
0.125 inches nominal
Thready Qty Per Inch (tpi):
28
Hardness Rating:
45.0 rockwell c minimum overall and 53.0 rockwell c maximum overall
Material:
Steel comp 4032 overall or steel comp 4037 overall or steel comp 4137 overall or steel comp 4140 overall or steel comp 8630 overall or steel comp 8740 overall
Material Specification:
66 fed std all material responses overall
Surface Treatment:
Cadmium overall and chromate overall
Surface Treatment Specification:
Qq-p-416,type 2,class 3 fed spec all treatment responses overall
Thread Series Designator:
Unf
Quick Specs
Thread Size 1/4
Thread Qty 28
Material Steel
Length 7/8

Additional Information

SKU / Model: MS5196666
NSN: 5305-00-728-6323
FSC: Screws / 5305
Product Series: MS51966
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 25
ECCN: EAR99
National Motor Freight: 093486, Bolts,nuts Or Screws, Noi (sub 3)
Download PDF Version
MS51966-66_Military-Fasteners-com.pdf
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More MS51966 machine screws

MS51966-87

$5.10 EA, Fastener Length: 3/8in., Thread: 3/8-24, Head Width: 3/16in., Thread Length: 3/8in.

MS51966-80

Fastener Length: 1-1/64", Thread: 5/16-24, Head Width: 5/32", Thread Length: 1-1/64"

MS51966-67

Fastener Length: 0-1/1", Thread: 1/4-28, Head Width: 1/8", Thread Length: 0-1/1"

MS51966-147

Fastener Length: 1/2", Thread: 3/8-24, Head Width: 3/16", Thread Length: 1/2"

MS51966-123

Fastener Length: 5/16", Thread: 1/4-28, Head Width: 1/8", Thread Length: 5/16"

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I needed a voltage regulator as soon as possible to get a school plane back up. I wasnt able to call in the order until right at the cut-off time. I asked to PLEASE try to get the order shipped that day, and she did. Thank you very much!!

4.0

Everything arrived quickly and correctly. I'm a longtime customer and find your service to be always top of the line.

5.0

Recently my avionics technician and I were installing a component in my aircraft and there were some critical fasteners missing from the manufactures package. This stopped the entire process. I called Military Fasteners after finding the parts on line, and Trisha answered the phone. I told her the situation and that I needed them ASAP. I found the parts gave her the part number and she confirmed they were in stock. This was about 430 in the afternoon just before closing. Trisha was kind and professional got the parts out the door that evening even though it was after the shipping cut off. Saved the day. I can tell you this entire company is represented by Trisha, anything they can do to help you out of a jamb they will absolutely go the extra mile and Trisha is the go to person. I am sure there are others there with her same attitude and professionalism. This is a great resource for all your fasteners needs.

5.0

When I order from AS your staff is always knowledgeable on your products, quick to help customers, no phone call holds waiting time period, competitive pricing and fast standard delivery.

4.0