MS21921-5D
Military Standard Tube Coupling Nut
aluminum alloy 2024, tube outside 5/16", nut, sleeve coupling flareless



MS21921-5D Datasheet Features and Specification
Quick Specs
Thread Size | 1/2 |
Thread Qty | 20 |
Thread Series | UNJF |
Thread Class | 3B |
Material | Aluminum |
Additional Information
SKU / Model: | MS219215D |
NSN: | 4730-00-555-8012 |
FSC: | Hose, Pipe, Tube, Lubrication, and Railing Fittings / 4730 |
Product Series: | MS21921 |
Pack Weight (Approx.) | 0.000 lb |
Minimum Qty (MOQ): | 5 |
ECCN: | EAR99 |
National Motor Freight: | 013540, Alum Nuts |
Download PDF Version MS21921-5D_Military-Fasteners-com.pdf |
|
![]() ![]() |
* report an issue on this page
Frequently bought together
Other customers frequently bought these along with MS21921-5D

MS21922-5
Clinch Tube Fitting Sleeve
in Fittings
tube outside diameter: 5/16", sleeve coupling flareless, carbon steel, MS21922 series fitting

MS21921-4D
Tube Coupling Nut
in Nuts
tube outer diameter: 1/4", sleeve coupling, flareless, aluminum alloy
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 MS21921-5D


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

Buying parts from Military Fasteners couldnt be easier. If I need special help I make a phone call. I can usually do it all online and get super fast service.
Everything about this order was textbook perfect. As always,when I order something from Military Fasteners I get what I ordered when it arrives on time. No surprises or disappointments. Good job!
All of my orders have originated thru your online system and have arrived on time as advertised. Your system performs great. I can decide while ordering how I want it shipped and what cost. All things said, I find your system very easy to order thru.
Everything arrived exactly as ordered. Online ordering was very easy. Thanks.
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.