The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-646-5998, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Bell Textron Inc. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, 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 | 4820-01-646-5998 |
| Primary Part Number | 60875-002 |
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 / 48 — No Item Name Available |
| Manufacturer | Bell Textron Inc |
| Status | ACTIVE |
| Temp Rating | -65.0 FAHRENHEIT AND 320.0 FAHRENHEIT DEGF |
| First End Flange Shape Style | OVAL W/ BOLT HOLES |
| Material | ALUMINUM ALLOY 6061 BODY |
| Body Style | STRAIGHT THRU |
| Temp Control Device Type | THERMOSTATIC |
| First End Bolt Hole Quantity | 2 |
| Flow Control Device | STEM AND INTEGRAL DISK |
| First End Flange End Radius | 0.250 INCHES NOMINAL IN |
| First End Center to Center Distance Between Holes Along Length | 1.312 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 6061 SEAT |
| Second End Style Designator | GROOVED |
| Body Outside Diameter | 0.798 INCHES NOMINAL IN |
| First End Flange Length | 1.812 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 6061 STEM |
| First End Flange Thickness | 0.125 INCHES NOMINAL IN |
| First End Bolt Hole Diameter | 0.221 INCHES NOMINAL IN |
| First End Flange Width | 0.875 INCHES NOMINAL IN |
| Media for Which Designed | OIL |
| Second End Relationship with First End | NOT IDENTICAL |
| Material Document and Classification | QQ-A-200/8, ALLOY 6061, T6 FED SPEC SINGLE MATERIAL RESPONSE BODY |
| Surface Treatment | ANODIZE OUTSIDE |
| Surface Treatment Document and Classification | MIL-A-8625, TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDE |
| Material Document and Classification | QQ-A-200/8, ALLOY 6061, T6 FED SPEC SINGLE MATERIAL RESPONSE SEAT |
| Material Document and Classification | QQ-A-200/8, ALLOY 6061, T6 FED SPEC SINGLE MATERIAL RESPONSE STEM |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4820-01-646-5998 is a Valve,relief,pressure and Temper, manufactured by Bell Textron Inc, classified under FSC 4820 (No Item Name Available). Status: active.
NSN 4820-01-646-5998 has 3 cross-referenced part numbers: 60875-002 (Bell Textron Inc), 11-878 (Actronics Incorporated Dba Actronics Inc), 60875-002 (Ametek Thermal Systems Inc).
There are 3 known substitutes for 4820-01-646-5998: 5306-00-383-9037, 9350-01-569-4317, 5120-01-674-5678. Verify interchangeability with system specifications before substitution.
Key specifications for 60875-002: Temp Rating: -65.0 FAHRENHEIT AND 320.0 FAHRENHEIT DEGF; First End Flange Shape Style: OVAL W/ BOLT HOLES; Material: ALUMINUM ALLOY 6061 BODY; Body Style: STRAIGHT THRU. 26 total characteristics are documented in the Federal Logistics Information System.