The Seat,valve, cataloged under National Stock Number 4820-01-173-4165, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Trac Regulator Co., Inc. Dba Trac Regulator Co Inc. Government technical data includes 14 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-173-4165 |
| Primary Part Number | 349-00 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc |
| Status | ACTIVE |
| Body Stepped Inside Diameter | 0.755 INCHES NOMINAL FIRST STEP IN |
| Material | STEEL COMP 303 OVERALL |
| Style Designator | THREADED FLANGED |
| Thread Series Designator | UN SINGLE THREADED PORTION |
| Under Flange Height | 1.813 INCHES NOMINAL IN |
| Thread Class | 2A SINGLE THREADED PORTION A |
| Flange Seat to Disk End Height | 0.375 INCHES NOMINAL IN |
| Criticality Code Justification | FEAT |
| Nominal Thread Size | 1.125 INCHES SINGLE THREADED PORTION IN |
| Seating Surface Shape | FLAT |
| Thread Quantity Per Inch | 20 SINGLE THREADED PORTION |
| Flange Diameter | 1.250 INCHES NOMINAL IN |
| Thread Length | 0.360 INCHES NOMINAL SINGLE THREADED PORTION IN |
| Body Stepped Inside Diameter | 0.750 INCHES NOMINAL SECOND STEP IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-01-173-4165 is a Seat,valve, manufactured by Trac Regulator Co., Inc. Dba Trac Regulator Co Inc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-173-4165 has 2 cross-referenced part numbers: 349-00 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc), 349 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).
There are 5 known substitutes for 4820-01-173-4165: 5935-00-131-0605, 4920-00-341-1892, 6625-00-885-5869 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for 349-00: Body Stepped Inside Diameter: 0.755 INCHES NOMINAL FIRST STEP IN; Material: STEEL COMP 303 OVERALL; Style Designator: THREADED FLANGED; Thread Series Designator: UN SINGLE THREADED PORTION. 15 total characteristics are documented in the Federal Logistics Information System.