NSN catalog · 90,963 partsCatalog › Pipe, Tubing, Hose, and Fittings › FSC 4730 › 4730-00-057-5556
Boss Reducer P/N AS5172R0406L
In stock — 12 on our U.S. shelfNSN 4730-00-057-5556 4730000575556 NIIN 000575556
SECO Parts has 12 in stock of NSN 4730-00-057-5556 — Boss Reducer — on our own shelf in Augusta, GA: a stocking supplier, not a broker. Government catalog (FEDLOG) price: $112.13 per each — a public reference, not our price. We quote each request, usually the same business day, and surplus parts often quote below or above it.
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
Availability & condition
| Condition | Code | Qty on shelf |
|---|---|---|
| New Surplus | NS | 12 |
| Total | 12 |
Quantities are live from SECO's inventory system, not estimated.
Also known as:
4730-00-057-5556 000575556 AS5172R0406L SAE-AS4875 AS4875 AS5172 AN893-2S MS24397-S2 MS24397
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
- Connection type
- First End Threaded Internal Boss
- Material
- Overall Steel Comp 347
- Connection type
- Second End Threaded External Boss
- Nominal overall length
- Inches 1.109
- Reducer type
- Concentric
- Thread class
- 3B
- Thread series designator
- All Ends UNF
- Material document and classification
- Overall Fed STD Single Material Response 66
- Surface treatment
- Overall Passivate
- Special features
- W/3 NO.50 Lockwire Holes
- Thread class
- 3A
- Nominal thread size
- First End Inches 0.438
- Nominal thread size
- Second End Inches 0.562
From the federal catalog's item characteristics for this NSN. Confirm critical dimensions against your part or drawing before ordering.
Cross-reference part numbers
AS5172R0406L SAE-AS4875 AS4875 AS5172 AN893-2S MS24397-S2 MS24397
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 12 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 4730-00-057-5556?
NSN 4730-00-057-5556 (4730000575556) — Boss Reducer: SECO Parts has 12 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 4730-00-057-5556 available?
SECO Parts has 12 in stock in Augusta, GA — order or request a quote below.
How much does NSN 4730-00-057-5556 cost?
The government catalog (FEDLOG) lists NSN 4730-00-057-5556 at $112.13 per each. That is a public reference, not SECO's price: SECO quotes each request, usually the same business day, and surplus parts often quote below or above it.
What part numbers cross-reference to NSN 4730-00-057-5556?
Part numbers that cross-reference this NSN include AS5172R0406L, SAE-AS4875, AS4875, AS5172, AN893-2S, MS24397-S2, MS24397. 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.
More in FSC 4730
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4730-00-061-7306 Straight Pipe to Tube Adapter
4730-00-061-8455
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