The Collar,shaft, cataloged under National Stock Number 3040-01-278-5516, is classified within Federal Supply Class 3040 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Naval Sea Systems Command. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-278-5516 |
| Primary Part Number | 704-5940676 ITEM 4 |
| Item Name | Collar,shaft |
| FSC / FSG | 3040 / 30 — No Item Name Available |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Securing Hole Quantity | 2 |
| Style Designator | ROUND W/SINGLE CHAMFER |
| Securing Hole Type and Location | THREADED-COUNTERSUNK ALL HOLES |
| Countersink Major Diameter and Location | 0.4100 INCHES NOMINAL ALL HOLES IN |
| Countersunk Hole Angle in Deg and Location | 90.0 ALL HOLES |
| Material | COPPER ALLOY |
| Nominal Thread Size | 0.375 INCHES ALL HOLES IN |
| Chamfer Angle in Deg | 45.0 |
| Largest Diameter Length | 3.630 INCHES NOMINAL IN |
| Screw Thread Series Designator and Location | ALL HOLES UNIFIED NATIONAL COARSE (UNC) |
| Angle Between Centerlines of Securing Holes in Deg | 90.0 |
| Outside Diameter | 4.000 INCHES NOMINAL IN |
| Bore Diameter | 1.7520 INCHES NOMINAL IN |
| Thickness | 3.880 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 704-5940676 | Naval Sea Systems Command (USA) |
| 1507-104 ITEM 4 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 1507-104 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 704-5940676 ITEM 4 PRIMARY | Naval Sea Systems Command (USA) |
NSN 3040-01-278-5516 is a Collar,shaft, manufactured by Naval Sea Systems Command, classified under FSC 3040 (No Item Name Available). Status: active.
NSN 3040-01-278-5516 has 4 cross-referenced part numbers: 704-5940676 (Naval Sea Systems Command), 1507-104 ITEM 4 (Huntington Ingalls Inc Div Newport News Shipbuilding), 1507-104 (Huntington Ingalls Inc Div Newport News Shipbuilding), 704-5940676 ITEM 4 (Naval Sea Systems Command).
There are 7 known substitutes for 3040-01-278-5516: 5310-00-006-2250, 3040-01-278-3700, 3040-01-278-3701 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for 704-5940676 ITEM 4: Securing Hole Quantity: 2; Style Designator: ROUND W/SINGLE CHAMFER; Securing Hole Type and Location: THREADED-COUNTERSUNK ALL HOLES; Countersink Major Diameter and Location: 0.4100 INCHES NOMINAL ALL HOLES IN. 15 total characteristics are documented in the Federal Logistics Information System.