The Retainer,seal, cataloged under National Stock Number 5330-01-327-2568, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 13 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-327-2568 |
| Primary Part Number | 12321971 |
| Item Name | Retainer,seal |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Flange Thickness | 0.250 INCHES NOMINAL IN |
| Body Outside Diameter | 4.250 INCHES NOMINAL IN |
| Style Designator | FLANGED |
| Bolt Hole Diameter | 0.414 INCHES NOMINAL IN |
| Seal Seat Diameter | 3.060 INCHES NOMINAL IN |
| Aperture Diameter | 2.249 INCHES NOMINAL IN |
| Bolt Hole Quantity | 6 |
| Bolt Circle Diameter | 5.212 INCHES NOMINAL IN |
| Shortest Distance Between Body End and Mounting Flange | 0.070 INCHES NOMINAL IN |
| Mounting Flange Diameter | 5.972 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 355.0 OVERALL |
| Seal Seat Depth | 0.900 INCHES NOMINAL IN |
| Construction | SOLID |
| 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 |
|---|---|
| 12321971 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5330-01-327-2568 is a Retainer,seal, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-327-2568 has 1 manufacturer part number on file: 12321971 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12321971: Overall Height: 2.160 INCHES NOMINAL IN; Flange Thickness: 0.250 INCHES NOMINAL IN; Body Outside Diameter: 4.250 INCHES NOMINAL IN; Style Designator: FLANGED. 13 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.