The O-Ring, cataloged under National Stock Number 5331-00-166-5994, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Leonardo Spa Helicopters Division - Production Site. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 20 commercial cross-references from 12 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5331-00-166-5994 |
| Primary Part Number | MS29512-04 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-Ring |
| Manufacturer | Leonardo Spa Helicopters Division - Production Site |
| Status | CANCELLED |
| Center Hole Diameter | 0.346 INCHES MINIMUM AND 0.356 INCHES MAXIMUM IN |
| Cross-Sectional Height | 0.069 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| Elongation Percentage | 200 MAXIMUM |
| Departure From Cited Document | CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D |
| Hardness Rating | 65.0 SHORE DUROMETER A NOMINAL |
| Criticality Code Justification | ZZZW |
| Outside Diameter | 0.495 INCHES NOMINAL IN |
| Temp Rating | -65.0 FAHRENHEIT AND 180.0 FAHRENHEIT DEGF |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| MS29512-04 | Leonardo Spa Helicopters Division - Production Site (ITA) |
| 5331PL2083851 | Jednolity Indeks Materialowy - Uniform Material Index (POL) |
| MS29512-4 | Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator (USA) |
| SAE-AS29512 | Sae International Dba Sae International (USA) |
| MS29512-4 | Ontic Engineering & Manufacturing Uk Limited Div Ontic Engineering and Manufacturing Uk Limited (GBR) |
| MS29512-04CP | Sae International Dba Sae International (USA) |
| MS29512-04 | Sae International Dba Sae International (USA) |
| PP056B5-904 | Zf Industrieantriebe Witten Gmbh (DEU) |
| MS29512-04CP | Naval Inventory Control Point Mechanicsburg (USA) |
| MS29512-04 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| MS29512-4 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| MS29512-04CP | Society of Automotive Engineers Inc (USA) |
| MS29512-4 | Society of Automotive Engineers Inc (USA) |
| MS29512-4 | Wintec Llc (USA) |
| SRB4PD702-6A | Le Joint Francais (FRA) |
| MS29512/004 | Parco, Llc (USA) |
| MS29512-04 | Society of Automotive Engineers Inc (USA) |
| SRB4SR822A60 | Le Joint Francais (FRA) |
| 5331PL0804795 | Jednolity Indeks Materialowy - Uniform Material Index (POL) |
| MS29512-4CP | Wintec Llc (USA) |
NSN 5331-00-166-5994 is a O-Ring, manufactured by Leonardo Spa Helicopters Division - Production Site, classified under FSC 5331 (O-Ring). Status: cancelled.
NSN 5331-00-166-5994 has 20 cross-referenced part numbers: MS29512-04 (Leonardo Spa Helicopters Division - Production Site), 5331PL2083851 (Jednolity Indeks Materialowy - Uniform Material Index), MS29512-4 (Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator), SAE-AS29512 (Sae International Dba Sae International), MS29512-4 (Ontic Engineering & Manufacturing Uk Limited Div Ontic Engineering and Manufacturing Uk Limited) and 15 more.
There are 2 known substitutes for 5331-00-166-5994: 5331-00-263-8028, 5330-01-565-4536. Verify interchangeability with system specifications before substitution.
Key specifications for MS29512-04: Center Hole Diameter: 0.346 INCHES MINIMUM AND 0.356 INCHES MAXIMUM IN; Cross-Sectional Height: 0.069 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR; End Item Identification: MULTIPLE LAUNCH ROCKET SYSTEM (MLRS). 10 total characteristics are documented in the Federal Logistics Information System.
NSN 5331-00-166-5994 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.