The Grommet,metallic, cataloged under National Stock Number 5325-01-477-7451, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company. Government technical data includes 9 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-477-7451 |
| Primary Part Number | HS4874-2A4C |
| Item Name | Grommet,metallic |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Flange Outside Diameter | 0.500 INCHES NOMINAL IN |
| Material Document and Classification | QQ-S-763, CONDITION A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Surface Treatment | PASSIVATE OVERALL |
| Barrel Outside Diameter | 0.227 INCHES NOMINAL IN |
| Material | STEEL COMP 302 OR STEEL COMP 304 OVERALL |
| Flange Style | FLANGE |
| Barrel Style | STRAIGHT ROUND TYPE |
| Barrel Height | 0.135 INCHES NOMINAL IN |
| 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 |
|---|---|
| HS4874-2A4C PRIMARY | The Boeing Company (USA) |
| HS4874-2A4C | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| Reference | Meaning |
|---|---|
| HS4874-2A4C | 5/2 Secondary reference U.S. Government activity |
| HS4874-2A4C | 5/9 Secondary reference U.S. Government activity |
| ABC7080-2A4C | 5/9 Secondary reference U.S. Government activity |
| SL3541C3A4 | 5/9 Secondary reference U.S. Government activity |
| HS4874-2A4C | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
| SLN119-2A4C | 5/9 Secondary reference Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok |
NSN 5325-01-477-7451 is a Grommet,metallic, manufactured by The Boeing Company, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-477-7451 has 2 manufacturer part numbers on file: HS4874-2A4C (The Boeing Company), HS4874-2A4C (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok).
Key specifications for HS4874-2A4C: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Flange Outside Diameter: 0.500 INCHES NOMINAL IN; Material Document and Classification: QQ-S-763, CONDITION A FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Special Features: NO WASHER. 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.