The Spring,valve Inlet, cataloged under National Stock Number 5360-00-771-6863, is classified within Federal Supply Class 5360 (Coil, Flat, Leaf, and Wire Springs) of the Hardware and Abrasives group. The manufacturer of record is Ditta Seguino Ambrogio. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5360-00-771-6863 |
| Primary Part Number | W21448 |
| Item Name | Spring,valve Inlet |
| FSC / FSG | 5360 / 53 — Coil, Flat, Leaf, and Wire Springs |
| Manufacturer | Ditta Seguino Ambrogio |
| Status | ACTIVE |
| Reference Number Differentiating Characteristics | CRITICAL CLEANING IS NOT REQUIRED |
| 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 |
|---|---|
| W21448 | Ditta Seguino Ambrogio (ITA) |
| 3W21448 | Ingersoll-Rand Company Dba Ingersoll-Rand (USA) |
| Reference | Meaning |
|---|---|
| 3W21448 | 5/9 Secondary reference Ingersoll Rand Co |
| 3W21448 | 5/2 Secondary reference U.S. Government activity |
| 3W21448 | 5/9 Secondary reference U.S. Government activity |
| 3W21448 | 3/1 Design control — primary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 3W21448 | 5/2 Secondary reference U.S. Government activity |
NSN 5360-00-771-6863 is a Spring,valve Inlet, manufactured by Ditta Seguino Ambrogio, classified under FSC 5360, Coil, Flat, Leaf, and Wire Springs. Status: active.
NSN 5360-00-771-6863 has 2 manufacturer part numbers on file: W21448 (Ditta Seguino Ambrogio), 3W21448 (Ingersoll-Rand Company Dba Ingersoll-Rand).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-268-9057. Verify interchangeability with system specifications before substitution.
Key specifications for W21448: End Item Identification: COMPRESSOR ASSEMBLY,HYDROGEN-CARBON DIOXIDE GENERATING PLANT,MODEL H2-C02; Reference Number Differentiating Characteristics: CRITICAL CLEANING IS NOT REQUIRED. 1 specification is 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.