| Item Name | Coupling Boss |
| Federal Supply Group (FSG) | Pipe Tubing Hose and Fittings |
| Federal Supply Class (FSC) | 4730 Hose Pipe Tube Lubrication and Railing Fittings |
| National Item Identification Number (NIIN) | 00-345-8703 (003458703) |
| NCB Code | USA (00) |
| Manufacturer | Boeing Company The, Pioneer Machine Products Inc, Br Machine Parts Inc, Kmi Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3B ALL ENDS |
| AHNC | CONNECTION STYLE | GASKET SEAL (BOSS) ALL ENDS |
| AWLS | CONNECTION TYPE | THREADED INTERNAL BOSS ALL ENDS |
| CQJX | NOMINAL THREAD SIZE | 0.375 INCHES ALL ENDS |
| CRDL | UNION JOINT LOCATION | SECOND END |
| CWFR | NOMINAL OVERALL LENGTH | 1.531 INCHES |
| FEAT | SPECIAL FEATURES | DRILL 0.070 IN. HOLE FOR LOCKWIRE,BULKHEAD,UNF THD SERIES,0.625 IN. THD SIZE SECOND END |
| MATT | MATERIAL | STEEL COMP 303SE OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-764,TYPE 303SE FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | PRIMER OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-P-23377 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | RIGID,SHORT CENTER WRENCHING FACILITY |
| THSD | THREAD SERIES DESIGNATOR | UNF ALL ENDS |
| Relevant Components for NSN - 4730-00-345-8703, 4730003458703 | ||||
| 4730-01-436-2114 (4730014362114) | 4710-01-202-7787 (4710012027787) | 4720-01-526-5273 (4720015265273) | 4720-01-408-1219 (4720014081219) | |
| 4730-01-622-4160 (4730016224160) | 4720-01-589-9450 (4720015899450) | 4720-01-201-5242 (4720012015242) | 4730-00-409-1688 (4730004091688) | |
| 4720-01-137-0340 (4720011370340) | 4710-01-512-8267 (4710015128267) | 4720-01-703-1112 (4720017031112) | 4730-01-478-4701 (4730014784701) | |
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