The Lubricating Oil,instrument, cataloged under National Stock Number 9150-01-388-5990, is classified within Federal Supply Class 9150 (Oils and Greases: Cutting, Lubricating, and Hydraulic) of the Fuels, Lubricants, Oils, and Waxes group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 9150-01-388-5990 |
| Item Name | Lubricating Oil,instrument |
| FSC / FSG | 9150 / 91 — Oils and Greases: Cutting, Lubricating, and Hydraulic |
| Status | ACTIVE |
| Maximum Pour Point | -80.0 FAHRENHEIT DEGF |
| Basic Ingredient | LUBRICATING OIL |
| Fatty Material Type | ANY ACCEPTABLE |
| Minimum Flash Point and Test Method | 440.0 FAHRENHEIT CLEVELAND OPEN CUP DEGF |
| Quantity Within Each Unit Package | 1.000 QUARTS |
| Nondefinitive Spec/std Data | 4 GRADE |
| Viscosity at Rated Temp | 3.50 MINIMUM 210 DEG FAHRENHEIT AND 18.500 MAXIMUM 100 DEG FAHRENHEIT |
| Service Characteristics | CORROSION RESISTIVE AND OXIDATION RESISTANT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| MIL-L-53131 | 5/9 Secondary reference U.S. Government activity |
| MIL-DTL-53131 | 4/1 Identification reference U.S. Government activity |
| NYE 132 | 3/2 Design control — primary reference U.S. Government activity |
NSN 9150-01-388-5990 is a Lubricating Oil,instrument, classified under FSC 9150, Oils and Greases: Cutting, Lubricating, and Hydraulic. Status: active.
4 possible matches (shared part number, not a government interchangeability claim): 9150-01-388-6025, 9150-01-388-6068, 9150-01-388-6117. Verify interchangeability with system specifications before substitution.
Key specifications for 9150-01-388-5990: Maximum Pour Point: -80.0 FAHRENHEIT DEGF; Basic Ingredient: LUBRICATING OIL; Fatty Material Type: ANY ACCEPTABLE; Minimum Flash Point and Test Method: 440.0 FAHRENHEIT CLEVELAND OPEN CUP DEGF. 8 specifications are documented in the U.S. Government catalog.
Hazardous per DLA record (HMIC Y). 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.