The Sleeve,rotary Actua, cataloged under National Stock Number 4810-01-507-1055, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Moog Inc. Dba Ampac-Isp Corp. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4810-01-507-1055 |
| Primary Part Number | 41976 |
| Item Name | Sleeve,rotary Actua |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Moog Inc. Dba Ampac-Isp Corp |
| Status | ACTIVE |
| Overall Diameter | 4.994 INCHES NOMINAL IN |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 390M23-41970 ITEM 6 | Moog Inc. Dba Ampac-Isp Corp (USA) |
| 41976 PRIMARY | Moog Inc. Dba Ampac-Isp Corp (USA) |
| Reference | Meaning |
|---|---|
| 390M23-41970 | D/9 Drawing number reference only Moog Inc. Dba Ampac-Isp Corp |
NSN 4810-01-507-1055 is a Sleeve,rotary Actua, manufactured by Moog Inc. Dba Ampac-Isp Corp, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-01-507-1055 has 2 manufacturer part numbers on file: 390M23-41970 ITEM 6 (Moog Inc. Dba Ampac-Isp Corp), 41976 (Moog Inc. Dba Ampac-Isp Corp).
4 possible matches (shared part number, not a government interchangeability claim): 4820-01-507-1150, 3020-01-507-2329, 3020-01-508-4976. Verify interchangeability with system specifications before substitution.
Key specifications for 41976: Overall Diameter: 4.994 INCHES NOMINAL IN; Special Features: NHA ACTUATOR,ROTARY,HEAT TREAT TO RC27-34; End Item Identification: SEAWOLF CLASS SSN; Material: STEEL. 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.
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.