The Coupling,boss, cataloged under National Stock Number 4730-00-803-5912, 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 National Service Industries Inc Dba Zep Mfg Co. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, 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 | 4730-00-803-5912 |
| Primary Part Number | 123721-1 |
| Item Name | Coupling,boss |
| FSC / FSG | 4730 / 47 — No Item Name Available |
| Manufacturer | National Service Industries Inc Dba Zep Mfg Co |
| Status | ACTIVE |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS |
| Connection Style | GASKET SEAL (BOSS) ALL ENDS |
| Connection Type | THREADED INTERNAL BOSS FIRST END |
| Surface Treatment | PASSIVATE INSIDE |
| Nominal Overall Length | 2.688 INCHES IN |
| Material Document and Classification | 66,AISI 302/SAE 30302 FED STD SINGLE MATERIAL RESPONSE OR 66,AISI 304/SAE 30304 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Material | STEEL OVERALL |
| Nominal Thread Size | 0.750 INCHES FIRST END IN |
| Style Designator | PLAIN |
| Thread Class | 3B ALL ENDS |
| Surface Treatment | PASSIVATE OUTSIDE |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4730-00-803-5912 is a Coupling,boss, manufactured by National Service Industries Inc Dba Zep Mfg Co, classified under FSC 4730 (No Item Name Available). Status: active.
NSN 4730-00-803-5912 has 2 cross-referenced part numbers: 123721-1 (National Service Industries Inc Dba Zep Mfg Co), 123721 (National Service Industries Inc Dba Zep Mfg Co).
There are 3 known substitutes for 4730-00-803-5912: 5998-00-351-8558, 5120-00-827-2967, 5985-01-513-4280. Verify interchangeability with system specifications before substitution.
Key specifications for 123721-1: Thread Series Designator: UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS; Connection Style: GASKET SEAL (BOSS) ALL ENDS; Connection Type: THREADED INTERNAL BOSS FIRST END; Surface Treatment: PASSIVATE INSIDE. 12 total characteristics are documented in the Federal Logistics Information System.