The Collar Thrust Aft, cataloged under National Stock Number 3040-01-522-3274, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-522-3274 |
| Primary Part Number | 754-6407178 ITEM 1L1 |
| Item Name | Collar Thrust Aft |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Overall Diameter | 16.060 INCHES NOMINAL IN |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 754-6407178 ITEM 1L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 754-6407170 ITEM 1L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 211042321L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 754-6407170 ITEM 1 | 3/1 Design control — primary reference Naval Sea Systems Command |
| 211042321 | 5/1 Secondary reference U.S. Government activity |
| 754-6407178 ITEM 1 | 5/1 Secondary reference Naval Sea Systems Command |
NSN 3040-01-522-3274 is a Collar Thrust Aft, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-522-3274 has 3 manufacturer part numbers on file: 754-6407178 ITEM 1L1 (Naval Inventory Control Point Mechanicsburg), 754-6407170 ITEM 1L1 (Naval Inventory Control Point Mechanicsburg), 211042321L1 (Naval Inventory Control Point Mechanicsburg).
Key specifications for 754-6407178 ITEM 1L1: Overall Diameter: 16.060 INCHES NOMINAL IN; Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS. 3 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.