Tube Elbow P/N MS21904K16

Specifications

Thread class

3A

Leg length

All Ends Inches Nominal 1.719

Connection type

All Ends Threaded External Tube

Thread quantity per inch

12

Nominal thread size

All Ends Inches 1.312

Seat angle

All Ends Degrees 90.0

Flow angle

Degrees 90.0

Nominal outside diameter tube accommodated

All Ends Inches 1.000

Material

Overall Steel Corrosion Resisting

Surface treatment

Overall Passivate

Surface treatment document and classification

Inside MIL Spec Single Treatment Response -IL-S-5002

Surface treatment document and classification

Outside MIL Spec Single Treatment Response -IL-F-14072,E300,TY2

Thread series designator

All Ends Unified National Joint (Unj)

Specification/standard data

Government Standard 96906--S21904

From the federal catalog's item characteristics for this NSN. Confirm critical dimensions against your part or drawing before ordering.

Cross-reference part numbers

MS21904K16 SAE-AS18280 16EUSS 272-1237P10 MS21904-16C

Also referenced as

MS21904J16

Older, superseded, advisory or drawing numbers the federal catalog associates with this NSN — the ones in an old manual. They find the item; confirm the current part number when you order.

Shown for identification only. SECO can quote against any of these numbers.

Logistics data

Source of supply	SMS DLA Land and Maritime, Columbus, Ohio
Acquisition advice code	J Not stocked, centrally procured — the government does not stock this item; it is procured only when a requisition arrives. SECO has 4 on the shelf
Unit of issue	EA each
Demilitarization code	A Demilitarization not required — non-munitions-list item
Controlled inventory code	U Unclassified
Hazardous material indicator	N No hazardous material

Source: public FLIS/PUB LOG cataloging data.

Why buy from SECO

These quantities sit on our own shelves — we are a stocking supplier, not a broker sourcing after you order. Condition-coded stock, formal quotes with NSN/PN on the paperwork, POs and GPC welcome, fast U.S. shipping.

In business since 1951 · 30,000+ contracts completed · about SECO & our policies · more questions answered

FAQ

What is NSN 4730-00-988-4120?
NSN 4730-00-988-4120 (4730009884120) — Tube Elbow: SECO Parts has 4 in stock in Augusta, GA, on our own shelf. It is the NATO Stock Number for tube elbow in federal supply class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings).

Is NSN 4730-00-988-4120 available?
SECO Parts has 4 in stock in Augusta, GA — order or request a quote below.

How much does NSN 4730-00-988-4120 cost?
SECO typically prices parts like NSN 4730-00-988-4120 at $75–$125 each: an estimate from the government catalog price and what SECO has charged for similar parts. It is not a quote — request one for your price, usually answered the same business day. Quote lines carry a $50 minimum.

What part numbers cross-reference to NSN 4730-00-988-4120?
Part numbers that cross-reference this NSN include MS21904K16, SAE-AS18280, 16EUSS, 272-1237P10, MS21904-16C. It is also referenced by older, superseded or advisory numbers: MS21904J16. SECO can quote against any of them.