MS21921-4
Military Standard Tube Coupling Nut
outside diameter: 1/4", sleeve coupling, flareless, carbon steel, MS21921 series nut




Add to Quote
MS21921-4 Datasheet Features and Specification
Quick Specs
Thread Size | 7/16 |
Thread Qty | 20 |
Thread Series | UNF |
Thread Class | 3B |
Material | Steel |
Additional Information
Alternate Part Numbers
SKU / Model: | MS219214 |
NSN: | 4730-00-554-8015 |
FSC: | Hose, Pipe, Tube, Lubrication, and Railing Fittings / 4730 |
Product Series: | MS21921 |
Pack Weight (Approx.) | 0.155 lb |
Minimum Qty (MOQ): | 5 |
ECCN: | EAR99 |
National Motor Freight: | 093486, Bolts,nuts Or Screws, Noi (sub 3) |
Download PDF Version MS21921-4_Military-Fasteners-com.pdf |
|
![]() |
* report an issue on this page
Frequently bought together
Other customers frequently bought these along with MS21921-4

MS21922-4
Clinch Tube Fitting Sleeve
in Fittings
tube outside 1/4", sleeve coupling flareless, Carbon steel, MS21922 series fitting
More MS21921 tube coupling nuts
Corrosion resistant steel (15-5ph), cadmium plated, tube outside 1/2in., nut, sleeve coupling flareless
tube outside 5/16", nut, sleeve coupling flareless - corrosion resistant steel - cadmium plated "
Carbon steel tube outside 1/4in., nut, sleeve coupling flareless
$83.94 Each, Corrosion resistant steel cadmium plated, tube outside 5/8in., nut, sleeve coupling flareless
$15.30 Each, Aluminum alloy 7075, tube outer diameter 1/2in., nut, sleeve coupling, flareless
4730-00-777-7248 Tube Coupling Nut
Product Image Gallery
Product code MS21921-4



Have a question
If you require a quote on this or any product please visit our quote request page »
Browse our frequently asked questions page.
You may contact us by phone at +1 (904) 543-6395 or
email us using our contact form.
Our hours of operation are 8:00am - 6:00pm EST
Customer Reviews

Everything arrived quickly and correctly. I'm a longtime customer and find your service to be always top of the line.
Always very helpful Employees. Stock seems to be getting better as well. No problems ever.
Excellent selection of aircraft items and prices. Have never had bad service and delivery is always prompt. I will always be a loyal customer. Thanks for being a part of my aviation needs.
10/10 service! My go to for all things mil spec hardware. Their customer service team is superb! Trisha had a quote back to us in a matter on minutes. Love working with Military Fasteners
Please complete this form if you're having an issue with ordering this item or this item displays invalid or innacurate information or specifications. We thank you for taking the time to report issues so that we may better serve you.