MS21916J5-4
Military Standard Boss Reducer
MS21916J5-4 Fitting



MS21916J5-4 Datasheet Features and Specification
Quick Specs
Thread Series | UNJF |
Thread Class | 3A |
Material | Steel |
Additional Information
SKU / Model: | MS21916J54 |
NSN: | 4730-00-329-9652 |
FSC: | Hose, Pipe, Tube, Lubrication, and Railing Fittings / 4730 |
Product Series: | MS21916J |
Pack Weight (Approx.) | 0.000 lb |
Minimum Qty (MOQ): | 1 |
ECCN: | EAR99 |
National Motor Freight: | 052190, Pipe,tubing,or Pipe Or Tubing Fitti |
Download PDF Version MS21916J5-4_Military-Fasteners-com.pdf |
|
![]() ![]() |
* report an issue on this page
Frequently bought together
Other customers frequently bought these along with MS21916J5-4

MS21914-4J
Tube Cap
in Fittings
tube outside diameter: 1/4", corrosion resistant steel, pressure seal, flareless tube, MS21914 series fitting

MS21914-5J
Tube Cap
in Fittings
tube outside diameter: 5/16", pressure seal, flareless tube, corrosion resistant steel, MS21914 series fitting

MS21913J3
Threaded Tube Fitting Plug
in Fittings
outside diameter: 3/16", hex head, flareless tube, corrosion resistant steel

MS21913J5
Tube Fitting Threaded Plug
in Fittings
diameter: 5/16", hex head, flareless, corrosion resistant steel, MS21913 series plug

MS21913J6
Threaded Tube Fitting Plug
in Fittings
outside diameter: 3/8", corrosion resistant steel, hex head, flareless tube, MS21913 series fitting
More MS21916J boss reducers
$66.00 Ea
Union corrosion resistant steel 3/8in. to 1/4in. reducer external thread flareless tube
4730-00-851-8466 Boss Reducer
4730-00-826-3421 Boss Reducer
Product Image Gallery
Product code MS21916J5-4


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

I've been a customer since 1983 and you have provided what I needed most times in a very timely manner at the right price. Over all I have been very satisfied with your company.
I have been using Military Fasteners and have always had great service. Just this week I realized late in the day that we needed another part and I was able to add it to the order I had placed that morning. Being a small FBO on a shoestring budget that saved shipping cost and potential delays. Thanks Military Fasteners.
Your staff is courteous and well informed about your product line. Your inventory is excellent and competitively priced. The shipment always arrives as advertized and the boxes are well packed. I will continue to order my aircraft supplies from military fasteners
Great Service, very satisfied with ordering form your company. I have ordered several items and nothing has been incorrect or delayed. Large inventory to choose from, website design is very good and easy to navigate Keep up the good work
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.