NSN catalog · 90,963 partsCatalog › Pipe, Tubing, Hose, and Fittings › FSC 4730 › 4730-00-640-7200
Boss Reducer P/N MS21916D8-4
In stock — 7 on our U.S. shelfNSN 4730-00-640-7200 4730006407200 NIIN 006407200
SECO Parts has 7 in stock of NSN 4730-00-640-7200 — Boss Reducer — on our own shelf in Augusta, GA: a stocking supplier, not a broker. Typical price: $30–$60 each — an estimate from the government catalog price and what we have charged for similar parts. Not a quote: request one for your price. Quote lines carry a $50 minimum.
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, CH-53A/D/E
Availability & condition
| Condition | Code | Qty on shelf |
|---|---|---|
| New | NE | 7 |
| Total | 7 |
Quantities are live from SECO's inventory system, not estimated.
Also known as:
4730-00-640-7200 006407200 MS21916D8-4 SAE-AS18280 112740380 ER919D8-4 AS21916D8-4 AS18280 3100738
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
- Surface treatment
- Overall Anodize
- Nominal thread size
- First End Inches 0.750
- Specification/standard data
- Government Standard 96906--S21916
- Nominal thread size
- Second End Inches 0.438
- Nominal overall length
- Inches 1.344
- Reducer type
- Concentric
- Connection type
- All Ends Threaded External Boss
- Thread class
- 3A
- Thread series designator
- All Ends UNF
- Material
- Overall Aluminum Alloy 2024
From the federal catalog's item characteristics for this NSN. Confirm critical dimensions against your part or drawing before ordering.
Cross-reference part numbers
MS21916D8-4 SAE-AS18280 112740380 ER919D8-4 AS21916D8-4 AS18280 3100738
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 | Y Terminal item (stock exhausted) — a terminal item: government stock is exhausted and it is not being re-procured. SECO has 7 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 4730-00-640-7200?
NSN 4730-00-640-7200 (4730006407200) — Boss Reducer: SECO Parts has 7 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 4730-00-640-7200 available?
SECO Parts has 7 in stock in Augusta, GA — order or request a quote below.
How much does NSN 4730-00-640-7200 cost?
SECO typically prices parts like NSN 4730-00-640-7200 at $30–$60 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 does NSN 4730-00-640-7200 fit?
The federal catalog lists NSN 4730-00-640-7200 as used on: Helicopter, CH-53A/D/E.
What part numbers cross-reference to NSN 4730-00-640-7200?
Part numbers that cross-reference this NSN include MS21916D8-4, SAE-AS18280, 112740380, ER919D8-4, AS21916D8-4, AS18280, 3100738. 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.
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4730-00-649-9103 Quick Disconnect Coupling Half
4730-00-650-9251 Pipe Elbow
4730-00-670-6016
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