The Grommet,nonmetallic, cataloged under National Stock Number 5325-00-722-8554, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Corporation Dba Lockheed Martin Aerostructures Div Advanced Technology Laboratories. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-722-8554 |
| Primary Part Number | 57421-3 |
| Item Name | Grommet,nonmetallic |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Lockheed Martin Corporation Dba Lockheed Martin Aerostructures Div Advanced Technology Laboratories |
| Status | ACTIVE |
| Grommet Style | ROUND |
| Flange Thickness | 0.125 INCHES NOMINAL IN |
| Large Flange Outside Diameter | 0.720 INCHES NOMINAL IN |
| Groove Outside Diameter | 0.530 INCHES NOMINAL IN |
| Grommet Construction Type | SOLID |
| Material | RUBBER SYNTHETIC OVERALL |
| Groove Width | 0.060 INCHES NOMINAL IN |
| Hole Diameter | 0.330 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 |
|---|---|
| 57421-3 PRIMARY | Lockheed Martin Corporation Dba Lockheed Martin Aerostructures Div Advanced Technology Laboratories (USA) |
| Reference | Meaning |
|---|---|
| 57421-3 | 5/9 Secondary reference Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin |
NSN 5325-00-722-8554 is a Grommet,nonmetallic, manufactured by Lockheed Martin Corporation Dba Lockheed Martin Aerostructures Div Advanced Technology Laboratories, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-722-8554 has 1 manufacturer part number on file: 57421-3 (Lockheed Martin Corporation Dba Lockheed Martin Aerostructures Div Advanced Technology Laboratories).
Key specifications for 57421-3: Overall Height: 0.310 INCHES NOMINAL IN; Grommet Style: ROUND; Flange Thickness: 0.125 INCHES NOMINAL IN; Large Flange Outside Diameter: 0.720 INCHES NOMINAL IN. 8 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.