The Nipple,boss, cataloged under National Stock Number 4730-00-541-1580, 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 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-541-1580 |
| Primary Part Number | AS21900-3 |
| Item Name | Nipple,boss |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Nominal Thread Size | 0.375 INCHES ALL ENDS IN |
| Material Document and Classification | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| Surface Treatment | CADMIUM OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END |
| Connection Type | THREADED EXTERNAL BOSS ALL ENDS |
| Style Designator | FLARED AND FLARELESS W/ CENTER WRENCHING FACILITY |
| Surface Treatment Document and Classification | QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Nominal Overall Length | 1.156 INCHES IN |
| Material | STEEL COMP 1137 OR STEEL COMP 1141 OR STEEL COMP 4130 OVERALL |
| Thread Class | 3A ALL ENDS A |
| Connection Style | FLARED W/ GASKET SEAL (BOSS) FIRST END |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| AS21900-3 | Society of Automotive Engineers Inc (USA) |
| MILF18280A | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| MS21900-3 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| MS21900-3 | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA) |
| SAE-AS18280 | Sae International Dba Sae International (USA) |
| AS21900-3 PRIMARY | Sae International Dba Sae International (USA) |
NSN 4730-00-541-1580 is a Nipple,boss, manufactured by Sae International Dba Sae International, classified under FSC 4730 (No Item Name Available). Status: active.
NSN 4730-00-541-1580 has 6 cross-referenced part numbers: AS21900-3 (Society of Automotive Engineers Inc), MILF18280A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MS21900-3 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS21900-3 (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution), SAE-AS18280 (Sae International Dba Sae International) and 1 more.
There are 3 known substitutes for 4730-00-541-1580: 4730-00-194-1065, 4730-00-541-1756, 4730-00-684-4041. Verify interchangeability with system specifications before substitution.
Key specifications for AS21900-3: Nominal Thread Size: 0.375 INCHES ALL ENDS IN; Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL; Surface Treatment: CADMIUM OVERALL; Thread Series Designator: UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS. 13 total characteristics are documented in the Federal Logistics Information System.