NSN catalog · 90,963 partsCatalog › Mechanical Power Transmission Equipment › FSC 3040 › 3040-00-657-8520
Shouldered Shaft P/N 6578520
In stock — 9 on our U.S. shelfNSN 3040-00-657-8520 3040006578520 NIIN 006578520
SECO Parts has 9 in stock of NSN 3040-00-657-8520 — Shouldered Shaft — 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
- SHAFT,SHOULDERED
- SECO description
- SHAFT, T/M INPUT
- Federal supply class
- FSC 3040 — Miscellaneous Power Transmission Equipment
Availability & condition
| Condition | Code | Qty on shelf |
|---|---|---|
| New Surplus | NS | 9 |
| Total | 9 |
Quantities are live from SECO's inventory system, not estimated.
Also known as:
3040-00-657-8520 006578520 6578520
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
- Steel
- First end groove width
- 0.1000 in (nominal)
- First end diameter
- 1.9684 in (nominal)
- Material document and classification
- Assn STD Single Material Response Aisi 3130 or Fed Spec Single Material Response QQ-S-624,FS4150H
- Largest step diameter
- 3.145–3.150 in
- First end groove diameter
- 1.8340 in (nominal)
- First end distance from end to groove
- 0.143 in (nominal)
- Second end spline minor diameter
- 1.8880 in (nominal)
- Second end spline major diameter
- 2.2440 in (nominal)
- Step quantity
- 5
- Second end spline quantity
- 6
- Second end diameter
- 2.2440 in (nominal)
- Second end spline length
- 3.750 in (nominal)
- Overall length
- 21.125 in (nominal)
- Fsc application data
- Transmission Input Shaft,Tractor 18 Ton
- End similarity
- Not Identical
From the federal catalog's item characteristics for this NSN. Confirm critical dimensions against your part or drawing before ordering.
Cross-reference part numbers
6578520
Shown for identification only. SECO can quote against any of these numbers.
Logistics data
| Demilitarization code | A Demilitarization not required — non-munitions-list item |
| 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.
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FAQ
What is NSN 3040-00-657-8520?
NSN 3040-00-657-8520 (3040006578520) — Shouldered Shaft: SECO Parts has 9 in stock in Augusta, GA, on our own shelf. It is the NATO Stock Number for shouldered shaft in federal supply class 3040 (Miscellaneous Power Transmission Equipment).
Is NSN 3040-00-657-8520 available?
SECO Parts has 9 in stock in Augusta, GA — order or request a quote below.
How much does NSN 3040-00-657-8520 cost?
SECO quotes NSN 3040-00-657-8520 on request, usually the same business day.
What part numbers cross-reference to NSN 3040-00-657-8520?
Part numbers that cross-reference this NSN include 6578520. SECO can quote against any of them.
Same item, other stock numbers
Other NSNs the federal catalog names SHAFT,SHOULDERED. Same name is not the same part: check the part numbers.