MS21916J6-4
Military Standard Boss Reducer
3/8" to 1/4", reducer, external thread, flareless, corrosion resistant steel, ms21916 series fitting







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MS21916J6-4 Datasheet Features and Specification
Quick Specs
Thread Series | UNJF |
Thread Class | 3A |
Additional Information
SKU / Model: | MS21916J64 |
NSN: | 4730-00-720-0233 |
FSC: | Hose, Pipe, Tube, Lubrication, and Railing Fittings / 4730 |
Product Series: | MS21916J |
Pack Weight (Approx.) | 0.000 lb |
Minimum Qty (MOQ): | 1 |
Schedule B: | 7307.21.5000 |
ECCN: | EAR99 |
National Motor Freight: | 052190, Pipe,tubing,or Pipe Or Tubing Fitti |
Download PDF Version MS21916J6-4_Military-Fasteners-com.pdf |
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Product code MS21916J6-4






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Customer Reviews

Trisha Hawkins and her team at Military Fasteners are absolutely incredible. We do a lot of Government and Military work and due to this there are a ton of restrictions with what products we can use. I called Military Fasteners (MF) with an extremely HOT request. Trisha was able to source those part numbers, tell me they were in stock and ready to ship. I ordered these on a Wednesday at 4:00pm. They shipped the same exact Wednesday, we received that weeks Friday, even though we were guaranteed Monday/Tuesday. Trisha - THANK YOU! Trisha's Team - THANK YOU! I will only be ordering my military hardware from you all.
I have always turned to Military Fasteners for all my aviation needs. They have never let me down and are totally trustworthy, fast and efficient. They have great choices from reasonably priced, to the best available. I've never seen the need to look anywhere else..Why would I..
As normal with Military Fasteners for many years, no issues. I order the parts needed and they send them. Just fair prices and good service.
Trish is very responsive and helpful
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