The Grommet,nonmetallic, cataloged under National Stock Number 5325-00-558-1784, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Nmc Group, Inc.. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-558-1784 |
| Primary Part Number | NMC858A-16 |
| Item Name | Grommet,nonmetallic |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Nmc Group, Inc. |
| Status | ACTIVE |
| Grommet Style | ROUND |
| Flange Thickness | 0.055 INCHES NOMINAL IN |
| Large Flange Outside Diameter | 1.195 INCHES NOMINAL IN |
| Groove Outside Diameter | 1.101 INCHES NOMINAL IN |
| Grommet Construction Type | SPLIT |
| Material | PLASTIC POLYAMIDE NYLON OVERALL |
| Groove Width | 0.196 INCHES MINIMUM AND 0.206 INCHES MAXIMUM IN |
| Hole Diameter | 1.000 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 |
|---|---|
| NMC858A-16 PRIMARY | Nmc Group, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 294237-16 | 5/9 Secondary reference Monadnock Company, the Dba Lisi Aerospace |
| 9M858A-16 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| 9M257-16 | 5/9 Secondary reference The Boeing Company Div Defense |
| NMC257-16 | 5/9 Secondary reference Nmc Group, Inc. |
NSN 5325-00-558-1784 is a Grommet,nonmetallic, manufactured by Nmc Group, Inc., classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-558-1784 has 1 manufacturer part number on file: NMC858A-16 (Nmc Group, Inc.).
Key specifications for NMC858A-16: Overall Height: 0.312 INCHES NOMINAL IN; Grommet Style: ROUND; Flange Thickness: 0.055 INCHES NOMINAL IN; Large Flange Outside Diameter: 1.195 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.