MIL-PRF-6083 Hydraulic Fluid, Petroleum Base, For Preservation And OperationThis specification describes the characteristics and provides the requirements for one grade of petroleum base hydraulic fluid for use in the -54??C to +135??C temperature range \(see 6.1\). This fluid is rust inhibited and used both as a preservative for hydraulic systems and components as well as being an operational fluid. This hydraulic fluid will not be used for aircraft systems, aircraft ground support equipment, or the preservation of aircraft components. The hydraulic fluid is identified by Military Symbol OHT and NATO Symbol C-635.

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MIL-PRF-6083G

2. APPLICABLE DOCUMENTS

2.1 General. The documents listed in this section are specified in sections 3 and 4 of this

specification. This section does not include documents cited in other sections of this specification or

recommended for additional information or as examples. While every effort has been made to ensure the

completeness of this list, document users are cautioned that they must meet all specified requirement

documents cited in section 3 and 4 of this specification, whether or not they are listed.

2.2 Government documents.

2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and

handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the

issues of these documents are those cited in the solicitation or contract.

FEDERAL SPECIFICATION

TT-T-656

-Tricresyl Phosphate

FEDERAL STANDARDS

FED-STD-791

-Testing Method of Lubricants, Liquid Fuels, and Related

Products

DEPARTMENT OF DEFENSE SPECIFICATIONS

MIL-PRF-5606

- Hydraulic Fluid, Petroleum Base; Aircraft, Missile, and

Ordnance.

MIL-PRF-46170 - Hydraulic Fluid, Rust Inhibited, Fire Resistant, Synthetic

Hydrocarbon Base, NATO Code Number H-544.

MIL-PRF-83282 - Hydraulic Fluid, Fire Resistant, Synthetic Hydrocarbon Base,

Metric, NATO Code Number H-537.

MIL-PRF-87257 - Hydraulic Fluid, Fire Resistant, Low Temperature, Synthetic

Hydrocarbon Base, Aircraft and Missile.

(Copies of these documents are available online at https://quicksearch.dla.mil/ or from the

Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-

5094).

2.3 Non-Government publications. The following documents form a part of this document to

the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in

the solicitation or contract.

ASTM INTERNATIONAL

ASTM D93

- Standard Test Methods for Flash Point by Pensky-Martens Closed Cup Tester

(DoD Adopted).

ASTM D97

- Standard Test Method for Pour Point of Petroleum Products (DoD Adopted).

ASTM D130

- Standard Test Method for Corrosiveness to Copper from Petroleum Products by

Copper Strip Test (DoD Adopted).

- Standard Test Method for Kinematic Viscosity of Transparent and Opaque

ASTM D445

Liquids (and Calculation of Dynamic Viscosity) (DoD Adopted).

- Standard Test Method for Acid Number of Petroleum Products by

ASTM D664