The Collar Assembly,gagging, cataloged under National Stock Number 3040-01-500-9948, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-500-9948 |
| Primary Part Number | 751-6402856-AY99 |
| Item Name | Collar Assembly,gagging |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Overall Diameter | 2.500 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 751-64052237-REF 95 | Naval Sea Systems Command (USA) |
| 751-6402856-AY99 PRIMARY | Naval Sea Systems Command (USA) |
| 211091182 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 751-6402856 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3040-01-500-9948 is a Collar Assembly,gagging, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-500-9948 has 3 manufacturer part numbers on file: 751-64052237-REF 95 (Naval Sea Systems Command), 751-6402856-AY99 (Naval Sea Systems Command), 211091182 (Naval Sea Systems Command).
Key specifications for 751-6402856-AY99: Overall Diameter: 2.500 INCHES NOMINAL IN; Overall Length: 18.960 INCHES NOMINAL IN; Special Features: ASSEMBLY CONSISTS OF: 1 EA COLLAR, 1 EA ADJUSTMENT COLLAR, 1 EA ADAPTER, 3 EA SCREWS, 1 EA PADLOCK, KEY; NEXT HIGHER ASSEMBLY IS THE TORPEDO TUBES ON THE SUBMARINE; Part Name Assigned by Controlling Agency: COLLAR ASSEMBLY, GAGGING, SLIDE VALVE SHUT. 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 3040-01-500-9948 has DEMIL Code B. 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.