The Shaft Operator, cataloged under National Stock Number 3040-01-643-9925, 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 2 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-643-9925 |
| Primary Part Number | H547-1721-53D4 |
| Item Name | Shaft Operator |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | MATERIAL CONTROLLED IAW SS800-AG-MAN-010/P-9290 SYSTEM CERTIFICATION PRODURES AND CRITERIA MANUAL FOR DEEP SUBMERGENCE SYSTEMS; CRITICAL ITEM FOR SAFETY AND SURVIVAL OF DEEP SUBMERGENCE RESEARCH AND RESCUE VEHICLES AS DIFFERENTIATED BY SPECIAL TEST FEATURES |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| H547-1721-53D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| H5470001-H5471721-53D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| 7383858-H5471721-053D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| 167-7108111-53D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| H547-0001-H5471721-053D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| 7383858-7108111-53D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 7383858-7108111-53 | 5/1 Secondary reference Naval Sea Systems Command |
| H547-1721-53 | 5/1 Secondary reference U.S. Government activity |
| H547-0001-H5471721-053 | 5/1 Secondary reference U.S. Government activity |
| 7383858-H5471721-053 | 3/1 Design control — primary reference Naval Sea Systems Command |
| H5470001-H5471721-53 | 5/1 Secondary reference U.S. Government activity |
| 167-7108111-53 | 5/1 Secondary reference Naval Sea Systems Command |
NSN 3040-01-643-9925 is a Shaft Operator, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-643-9925 has 6 manufacturer part numbers on file: H547-1721-53D4 (Naval Inventory Control Point Mechanicsburg), H5470001-H5471721-53D4 (Naval Inventory Control Point Mechanicsburg), 7383858-H5471721-053D4 (Naval Inventory Control Point Mechanicsburg), 167-7108111-53D4 (Naval Inventory Control Point Mechanicsburg), H547-0001-H5471721-053D4 (Naval Inventory Control Point Mechanicsburg) and 1 more.
Key specifications for H547-1721-53D4: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: MATERIAL CONTROLLED IAW SS800-AG-MAN-010/P-9290 SYSTEM CERTIFICATION PRODURES AND CRITERIA MANUAL FOR DEEP SUBMERGENCE SYSTEMS; CRITICAL ITEM FOR SAFETY AND SURVIVAL OF DEEP SUBMERGENCE RESEARCH AND RESCUE VEHICLES AS DIFFERENTIATED BY SPECIAL TEST FEATURES. 2 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.
NSN 3040-01-643-9925 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.