The O-Ring, cataloged under National Stock Number 5331-00-127-3929, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is S I T Corporation. Government technical data includes 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-127-3929 |
| Primary Part Number | 2661328 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | S I T Corporation |
| Status | ACTIVE |
| Cross-Sectional Height | 0.067 INCHES MINIMUM AND 0.071 INCHES MAXIMUM IN |
| Center Hole Diameter | 0.376 INCHES MINIMUM AND 0.386 INCHES MAXIMUM IN |
| Material | RUBBER |
| 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 |
|---|---|
| 2661328 | S I T Corporation (USA) |
| Reference | Meaning |
|---|---|
| 10163201 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 2661328 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5331-00-127-3929 is a O-Ring, manufactured by S I T Corporation, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-127-3929 has 1 manufacturer part number on file: 2661328 (S I T Corporation).
Key specifications for 2661328: Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.071 INCHES MAXIMUM IN; Center Hole Diameter: 0.376 INCHES MINIMUM AND 0.386 INCHES MAXIMUM IN; Material: RUBBER. 3 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.