MS21083B4

Military Standard Locknut

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Description:

Thread Size: 1/4", Nut Height: 7/32", Head Width: 27/64

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MS21083B4 Datasheet Features and Specification

Thread Class:
3b
Thread Direction:
Right-hand
Locking Feature:
Prevailing torque with nonmetallic insert
Lubrication:
Soluble lubricant
Nut Style:
Hexagon
Nut Height:
0.219 inches maximum
Width Across Flats:
0.430 inches minimum and 0.439 inches maximum
Tempurature Rating:
250.0 deg fahrenheit maximum
Thread Series:
Unf
Thready Qty Per Inch (tpi):
28
Thread Size:
0.250 inches
Countersink Angle:
88.0 degrees minimum nut
Bearing Surface Type:
Chamfered or washer faced
Bearing Surface Finish:
125.0 microinches
Material:
Copper alloy nut
Material:
Plastic polyamide channel
Surface Treatment:
Cadmium overall except insert and chromate overall except insert
Surface Treatment Specification:
Qq-p-416,ty 2,cl 2 fed spec all treatment responses overall except insert
Quick Specs
Thread Size 1/4
Thread Qty 28

Additional Information

SKU / Model: MS21083B4
NSN: 5310-00-936-9642
FSC: Nuts and Washers / 5310
Product Series: MS21083B
Pack Weight (Approx.) 0.000 lb
Minimum Qty (MOQ): 5
Schedule B: 7318.16.0085
ECCN: EAR99
National Motor Freight: 139820, Nickel Bolts / Nails / Nuts / Rivets Etc
Download PDF Version
MS21083B4_Military-Fasteners-com.pdf
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More MS21083B locknuts

MS21083B6

Thread Size: 3/8", Nut Height: 9/32", Head Width: 35/64"

MS21083B06

Thread Size: 1/8in., Nut Height: 9/64in., Head Width: 5/16in.

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Received exactly as ordered, exactly when promised. Superb customer service as always.

4.0

Very pleased with the customer service I get when I call. My Cessna 182 is always needing a little bit of extra LOVE from Military Fasteners. When I call to order parts, your training and customer service of your order takers are the tops.. They understand what I'm looking for and can help me figure out how to order it. I've upgraded my old normal headsets to your reconditioned Bose X General Aviation Noise Cancelling. These are my first Noise Cancelling headsets and we are very pleased...I've come back and purchased 2 more...You are a very professional group! With your shipping location in Atlanta, sometimes, I get things in 1 day or 2 at the most. Thanks.

5.0

I placed the order on a Sat, and on Sun wanted to add something, sent email, got quick response and they added item and got the order in 3 days. AWESOME SERVICE

5.0

Brittany has always provided me with excellent service on phone calls and in emails! Brittany is always extremely helpful, friendly and she goes the extra mile to help! Thank you very much Brittany!!

5.0