The Retainer,packing, cataloged under National Stock Number 5330-01-005-3163, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Mercer Products & Manufacturing Company Dba Mercer Products & Manufacturing Co Div Mercer Products & Manufacturing. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-005-3163 |
| Primary Part Number | 12A7518-59 |
| Item Name | Retainer,packing |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | Mercer Products & Manufacturing Company Dba Mercer Products & Manufacturing Co Div Mercer Products & Manufacturing |
| Status | ACTIVE |
| Cross-Sectional Height | 0.062 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | OVAL |
| Peripheral Diameter | 1.547 INCHES MINIMUM AND 1.557 INCHES MAXIMUM IN |
| Center Hole Diameter | 1.315 INCHES MINIMUM AND 1.325 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 12A7518-59 | Mercer Products & Manufacturing Company Dba Mercer Products & Manufacturing Co Div Mercer Products & Manufacturing (USA) |
| K301222-59 | In Speck Corp Dba in Speck Corp (USA) |
| Reference | Meaning |
|---|---|
| 12A7518-59 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5330-01-005-3163 is a Retainer,packing, manufactured by Mercer Products & Manufacturing Company Dba Mercer Products & Manufacturing Co Div Mercer Products & Manufacturing, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-005-3163 has 2 manufacturer part numbers on file: 12A7518-59 (Mercer Products & Manufacturing Company Dba Mercer Products & Manufacturing Co Div Mercer Products & Manufacturing), K301222-59 (In Speck Corp Dba in Speck Corp).
Key specifications for 12A7518-59: Cross-Sectional Height: 0.062 INCHES NOMINAL IN; Cross-Sectional Shape Style: OVAL; Peripheral Diameter: 1.547 INCHES MINIMUM AND 1.557 INCHES MAXIMUM IN; Center Hole Diameter: 1.315 INCHES MINIMUM AND 1.325 INCHES MAXIMUM IN. 4 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.