The Reducer,boss, cataloged under National Stock Number 4730-00-720-0233, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Sae International Dba Sae International. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 15 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4730-00-720-0233 |
| Primary Part Number | MS21916J6-4 |
| Item Name | Reducer,boss |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Sae International Dba Sae International |
| Status | CANCELLED |
| Thread Class | 3A ALL ENDS A |
| Surface Treatment | PASSIVATE OVERALL |
| Reducer Type | CONCENTRIC |
| Nominal Thread Size | 0.438 INCHES SECOND END IN |
| Nominal Overall Length | 1.219 INCHES IN |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS |
| Surface Treatment Document and Classification | MIL-F-14072,E300,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDE |
| Nominal Thread Size | 0.562 INCHES FIRST END IN |
| Connection Type | THREADED EXTERNAL BOSS ALL ENDS |
| Specification/standard Data | 81343-AS21916 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION |
| Surface Treatment Document and Classification | MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE INSIDE |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 4730PL0719663 | Jednolity Indeks Materialowy - Uniform Material Index (POL) |
| AS18280 | Society of Automotive Engineers Inc (USA) |
| MS21916-6-4C | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| AS18280 | Sae International Dba Sae International (USA) |
| MS21916J6-4 | Society of Automotive Engineers Inc (USA) |
| AS21916 | Society of Automotive Engineers Inc (USA) |
| MS21916J6-4 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| 10108438 | Nimikkeistokeskus Ncb Finland (FIN) |
| MS21916-6-4J | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| MS21916C6-4 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| AS21916 | Sae International Dba Sae International (USA) |
| SAE-AS18280 | Sae International Dba Sae International (USA) |
| 156/102 | Wellman Group (GBR) |
| MS21916J6-4 PRIMARY | Sae International Dba Sae International (USA) |
| MS21916-4C | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
NSN 4730-00-720-0233 is a Reducer,boss, manufactured by Sae International Dba Sae International, classified under FSC 4730 (No Item Name Available). Status: cancelled.
NSN 4730-00-720-0233 has 15 cross-referenced part numbers: 4730PL0719663 (Jednolity Indeks Materialowy - Uniform Material Index), AS18280 (Society of Automotive Engineers Inc), MS21916-6-4C (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), AS18280 (Sae International Dba Sae International), MS21916J6-4 (Society of Automotive Engineers Inc) and 10 more.
There are 4 known substitutes for 4730-00-720-0233: 5340-00-868-7173, 1680-01-121-6030, 5310-01-465-5987 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for MS21916J6-4: Thread Class: 3A ALL ENDS A; Surface Treatment: PASSIVATE OVERALL; Reducer Type: CONCENTRIC; Nominal Thread Size: 0.438 INCHES SECOND END IN. 12 total characteristics are documented in the Federal Logistics Information System.
NSN 4730-00-720-0233 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.