The Valve,regulating,temperature, cataloged under National Stock Number 4820-01-355-7243, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Trac Regulator Co., Inc. Dba Trac Regulator Co Inc. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-355-7243 |
| Primary Part Number | 40662-101 |
| Item Name | Valve,regulating,temperature |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc |
| Status | ACTIVE |
| Flow Control Device | DISK |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU |
| First End Seat Angle in Deg | 37.0 |
| First End Thread Class | 2B |
| First End Style Designator | FLARE |
| Temp Rating | 28.0 FAHRENHEIT MINIMUM AND 130.0 FAHRENHEIT MAXIMUM DEGF |
| End Connection Quantity | 2 |
| First End Connection Type | THREADED INTERNAL TUBE |
| Temp Adjustability | NOT ADJUSTABLE |
| First End Outside Diameter Tube Accommodated | 0.250 INCHES NOMINAL IN |
| Material | ALUMINUM BODY |
| Thread Size and Series/type Designator | 0.438-20 UNF FIRST END |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 40662-101 PRIMARY | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 40679 | 5/9 Secondary reference Trac Regulator Co., Inc. Dba Trac Regulator Co Inc |
| 40679 PART 400-00 | 5/9 Secondary reference Trac Regulator Co., Inc. Dba Trac Regulator Co Inc |
| 40679 PART 40662-101 | 5/9 Secondary reference Trac Regulator Co., Inc. Dba Trac Regulator Co Inc |
| 400-00VM | C/1 Advisory reference — outside the item-of-supply concept Naval Inventory Control Point Mechanicsburg |
NSN 4820-01-355-7243 is a Valve,regulating,temperature, manufactured by Trac Regulator Co., Inc. Dba Trac Regulator Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-355-7243 has 1 manufacturer part number on file: 40662-101 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).
1 possible match (shared part number, not a government interchangeability claim): 7310-01-398-6787. Verify interchangeability with system specifications before substitution.
Key specifications for 40662-101: Flow Control Device: DISK; First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: IDENTICAL; Body Style: STRAIGHT THRU. 14 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.