Part Details | UNION NUT
4730-01-031-8872 An internally threaded nut which has an internal seat or shoulder designed to engage the nut retaining flange of a union tailpiece. The threaded portion is used to engage the thread piece of a union, union elbor or the like. Excludes NUT (1), TUBE COUPLING.
Alternate Parts: 8101385884 PIECE 8 2INL1, 810-1385884 PIECE 8 2INL1, 8101385884 PIECE 8 2IN, 810-1385884 PIECE 8 2IN, 4730-01-031-8872, 01-031-8872, 4730010318872, 010318872
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 47 | DEC 02, 1976 | 01-031-8872 | 19964 ( NUT, UNION ) |
REFERENCE DRAWINGS & PICTURES
HEXAGON
Cross Reference | NSN 4730-01-031-8872
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 810-1385884 PIECE 8 2INL1 | 03950 | NAVAL INVENTORY CONTROL POINTMECHANICSBURG |
| 810-1385884 PIECE 8 2IN | 53711 | NAVAL SEA SYSTEMS COMMAND |
Technical Data | NSN 4730-01-031-8872
| Characteristic | Specifications |
|---|---|
| THREAD SERIES | UN |
| NOMINAL THREAD SIZE | 3.750 INCHES |
| THREAD QUANTITY PER INCH | 12 |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| NUT STYLE | HEXAGON |
| SHOULDER WIDTH | 0.313 INCHES NOMINAL |
| NUT HEIGHT | 1.500 INCHES NOMINAL |
| WIDTH ACROSS FLATS | 4.375 INCHES NOMINAL |
| SMALLEST INSIDE DIAMETER | 3.190 INCHES NOMINAL |
| SHOULDER STEP WIDTH | 0.375 INCHES NOMINAL |
| SHOULDER SEAT DIAMETER | 3.750 INCHES NOMINAL |
| REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | QUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS |
| CRITICALITY CODE JUSTIFICATION | ZZZY |