The Ring,piston, cataloged under National Stock Number 2805-00-966-5744, is classified within Federal Supply Class 2805 (Gasoline Reciprocating Engines, Except Aircraft; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Ingersoll-Rand Company Dba Ingersoll-Rand. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 2805-00-966-5744 |
| Primary Part Number | 30627 |
| Item Name | Ring,piston |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Ingersoll-Rand Company Dba Ingersoll-Rand |
| Status | ACTIVE |
| FSC Application Data | LIQUID OXYGEN GENERATOR |
| Material Document and Classification | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| Cross-Sectional Shape Style | MULTI-PIECE SCRAPER, CONVEX FACE , W/EXPANDER |
| Joint Style | VERTICAL JOINT |
| Radial Wall Thickness | 0.2070 INCHES MINIMUM AND 0.2170 INCHES MAXIMUM IN |
| Ring Style | CONCENTRIC |
| Surface Treatment | CHROMIUM OUTSIDE PERIPHERY |
| Standard Bore Diameter | 3.625 INCHES IN |
| Material | STEEL COMP 1065 OR STEEL COMP 1070 OVERALL |
| 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 |
|---|---|
| 30627 PRIMARY | Ingersoll-Rand Company Dba Ingersoll-Rand (USA) |
| Reference | Meaning |
|---|---|
| X1440T56M | 5/9 Secondary reference U.S. Government activity |
| X1440T56M | 5/9 Secondary reference Ingersoll Rand Co |
| R63136M362 | 5/9 Secondary reference U.S. Government activity |
NSN 2805-00-966-5744 is a Ring,piston, manufactured by Ingersoll-Rand Company Dba Ingersoll-Rand, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-966-5744 has 1 manufacturer part number on file: 30627 (Ingersoll-Rand Company Dba Ingersoll-Rand).
3 possible matches (shared part number, not a government interchangeability claim): 4820-01-045-1791, 5998-01-384-2554, 5999-01-411-1024. Verify interchangeability with system specifications before substitution.
Key specifications for 30627: FSC Application Data: LIQUID OXYGEN GENERATOR; Overall Width: 0.1870 INCHES NOMINAL IN; Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL; Cross-Sectional Shape Style: MULTI-PIECE SCRAPER, CONVEX FACE , W/EXPANDER. 9 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.