NSN catalog · 90,963 partsCatalog › Pipe, Tubing, Hose, and Fittings › FSC 4730 › 4730-00-640-5856
Boss Reducer P/N MS21916W10-6
In stock — 4 on our U.S. shelfNSN 4730-00-640-5856 4730006405856 NIIN 006405856
SECO Parts has 4 in stock of NSN 4730-00-640-5856 — Boss Reducer — on our own shelf in Augusta, GA: a stocking supplier, not a broker.
One part, one step — answered within one business day. Several parts? and send them together.
- Ships in 1–3 business days from Augusta, GA
- Certificate of Conformance on request
- PO, GPC & major cards
- $50 minimum order — smaller requests still get a quote
- 30-day returns · terms
- FLIS item name
- REDUCER,BOSS
- SECO description
- REDUCER, BOSS
- Federal supply class
- FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
- Used on
- Helicopter, Model CH-47
Availability & condition
| Condition | Code | Qty on shelf |
|---|---|---|
| New Surplus | NS | 4 |
| Total | 4 |
Quantities are live from SECO's inventory system, not estimated.
Also known as:
4730-00-640-5856 006405856 MS21916W10-6 SAE-AS18280 AS18280 AS21916 MS21916D10-6 ER919D10-6
Get a quote
Build a list across as many parts as you need, send it once, get one quote back — answered within one business day, usually the same day. POs and GPC welcome. $50 minimum order.
More to tell us? Need-by date, ship-to, your own RFQ document
Specifications
- Material document and classification
- Overall Fed Spec Single Material Response QQ-A-225 to 6,T6
- Nominal thread size
- First End Inches 0.875
- Media for which designed
- Single Response Hydraulic Fluid
- Nominal overall length
- Inches 1.625
- Material
- Overall Aluminum Alloy 2024
- Nominal thread size
- Second End Inches 0.562
- Connection type
- All Ends Threaded External Boss
- Specification/standard data
- Government Standard 96906--S21916
- Surface treatment document and classification
- Overall MIL Spec Single Treatment Response -IL-A-8625
- Thread series designator
- All Ends Unified National Joint Fine (Unjf)
- Thread class
- 3A
- Reducer type
- Concentric
- Surface treatment
- Overall Anodize
From the federal catalog's item characteristics for this NSN. Confirm critical dimensions against your part or drawing before ordering.
Cross-reference part numbers
MS21916W10-6 SAE-AS18280 AS18280 AS21916 MS21916D10-6 ER919D10-6
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 | Z Insurance/numeric stockage objective — held by the government as insurance stock for contingencies, not for routine issue. SECO has 4 on the shelf |
| Unit of issue | PG package |
| 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 4730-00-640-5856?
NSN 4730-00-640-5856 (4730006405856) — Boss Reducer: SECO Parts has 4 in stock in Augusta, GA, on our own shelf. It is the NATO Stock Number for boss reducer in federal supply class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings).
Is NSN 4730-00-640-5856 available?
SECO Parts has 4 in stock in Augusta, GA — order or request a quote below.
How much does NSN 4730-00-640-5856 cost?
SECO quotes NSN 4730-00-640-5856 on request, usually the same business day.
What does NSN 4730-00-640-5856 fit?
The federal catalog lists NSN 4730-00-640-5856 as used on: Helicopter, Model CH-47.
What part numbers cross-reference to NSN 4730-00-640-5856?
Part numbers that cross-reference this NSN include MS21916W10-6, SAE-AS18280, AS18280, AS21916, MS21916D10-6, ER919D10-6. SECO can quote against any of them.
Same item, other stock numbers
Other NSNs the federal catalog names REDUCER,BOSS. Same name is not the same part: check the part numbers.