The Grommet,metallic, cataloged under National Stock Number 5325-01-053-9889, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Monadnock Company, the Dba Lisi Aerospace. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 5 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5325-01-053-9889 |
| Primary Part Number | C9539-4-1 |
| Item Name | Grommet,metallic |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Monadnock Company, the Dba Lisi Aerospace |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Flange Outside Diameter | 0.505 INCHES NOMINAL IN |
| Material Document and Classification | QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Surface Treatment | CADMIUM OVERALL |
| Barrel Outside Diameter | 0.307 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Flange Style | FLANGE |
| Barrel Style | STRAIGHT ROUND TYPE |
| Barrel Height | 0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM 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 |
|---|---|
| CA21038C-4-1 | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| C9539-4-1 PRIMARY | Monadnock Company, the Dba Lisi Aerospace (USA) |
| CA21038C-4-1 | Fairchild Fasteners Europe - Camloc Gmbh (DEU) |
| C9539-4-1 PRIMARY | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| 120002-4-1 | Monadnock Company, the Dba Lisi Aerospace (USA) |
| Reference | Meaning |
|---|---|
| 5325PL1764455 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 5325PL1816383 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 5325PL0719698 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| CZ21038C-4-1 | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc. Div Tridair Products |
| C9539-4-1 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5325-01-053-9889 is a Grommet,metallic, manufactured by Monadnock Company, the Dba Lisi Aerospace, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-053-9889 has 5 manufacturer part numbers on file: CA21038C-4-1 (Howmet Global Fastening Systems Inc. Div Tridair Products), C9539-4-1 (Monadnock Company, the Dba Lisi Aerospace), CA21038C-4-1 (Fairchild Fasteners Europe - Camloc Gmbh), C9539-4-1 (Howmet Global Fastening Systems Inc. Div Tridair Products), 120002-4-1 (Monadnock Company, the Dba Lisi Aerospace).
1 possible match (shared part number, not a government interchangeability claim): 5999-01-277-9805. Verify interchangeability with system specifications before substitution.
Key specifications for C9539-4-1: Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Flange Outside Diameter: 0.505 INCHES NOMINAL IN; Material Document and Classification: QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Surface Treatment: CADMIUM OVERALL. 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.