The O-Ring, cataloged under National Stock Number 5331-01-005-4057, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 9 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 16 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-005-4057 |
| Primary Part Number | 6406593-MTPD-A15 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Cross-Sectional Height | 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN |
| Outside Diameter | 2.367 INCHES MINIMUM AND 2.423 INCHES MAXIMUM IN |
| Hardness Rating | 75.0 SHORE DUROMETER A NOMINAL |
| Elongation Percentage | 125 MAXIMUM |
| Center Hole Diameter | 1.957 INCHES MINIMUM AND 1.993 INCHES MAXIMUM IN |
| Material | RUBBER FLUOROCARBON CLASS FPM |
| 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 |
|---|---|
| 6406593-MTPD-A15 PRIMARY | Naval Sea Systems Command (USA) |
| 73160-329 | Tld Ace Corp Div Tld Ace (USA) |
| 2-329V1226-75 PRIMARY | Parker-Hannifin Corp Div O-Ring Division (USA) |
| AS3209-329 PRIMARY | Sae International Dba Sae International (USA) |
| 2-329V1164-75 PRIMARY | Parker-Hannifin Corp Div O-Ring Division (USA) |
| 2-329V884-75 | C. E. Conover & Co., Inc. (USA) |
| 64406593-MTPD-B15 PRIMARY | Naval Sea Systems Command (USA) |
| 845-7108907 ITEM 23 | Naval Sea Systems Command (USA) |
| 2-329V0747-75 PRIMARY | Parker-Hannifin Corp Div O-Ring Division (USA) |
| Reference | Meaning |
|---|---|
| AS568-329 | 5/9 Secondary reference Sae International Dba Sae International |
| B-6227-32 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 6640219 FIND 24 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| M83248/1-329 | 5/9 Secondary reference U.S. Government activity |
| MIL-R-83248/1 | 5/9 Secondary reference U.S. Government activity |
| AS3209-329 | 5/9 Secondary reference U.S. Government activity |
| D1119 PIECE 12 | C/1 Advisory reference — outside the item-of-supply concept P J Valves Inc |
| M83248/1-329 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 5331PL1240718 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 60C132 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| SAE-AMS7276 | 3/1 Design control — primary reference Sae International Dba Sae International |
| AS568-329 | 5/9 Secondary reference U.S. Government activity |
| 3799948 FIND 61 | C/1 Advisory reference — outside the item-of-supply concept Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) |
| M83248/-329 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| H696-1602-80 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 563-7067896-80 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 5331-01-005-4057 is a O-Ring, manufactured by Naval Sea Systems Command, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-005-4057 has 9 manufacturer part numbers on file: 6406593-MTPD-A15 (Naval Sea Systems Command), 73160-329 (Tld Ace Corp Div Tld Ace), 2-329V1226-75 (Parker-Hannifin Corp Div O-Ring Division), AS3209-329 (Sae International Dba Sae International), 2-329V1164-75 (Parker-Hannifin Corp Div O-Ring Division) and 4 more.
3 possible matches (shared part number, not a government interchangeability claim): 5331-01-129-9438, 5331-01-261-2357, 5331-01-293-8697. Verify interchangeability with system specifications before substitution.
Key specifications for 6406593-MTPD-A15: Cross-Sectional Height: 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN; Outside Diameter: 2.367 INCHES MINIMUM AND 2.423 INCHES MAXIMUM IN; Hardness Rating: 75.0 SHORE DUROMETER A NOMINAL; Elongation Percentage: 125 MAXIMUM. 6 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.