Aviation lubricants Grease & oils product list Defence standards info
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Western DEFENCE Specifications 


For lubricants of western origin the specifications are issued by the authorities of the respective countries.


FRANCE

AIR

Direction Technique des Constructions Aeronautiques

DSCEN

Services des essences aux Armees

STM

Etat Major de la Marine

U.S.A.

DOD

Department of Defence Standards

MIL

Military Specifications

SAE

Society of Automotive Engineers

SS

Federal Specifications

TT

Federal Specifications

W

Federal Specifications

U.K.

BS

British Standards Institution

DEF-STAN

Ministry of Defence


(Directorate of Standardization)


Ministry of Defence- Procurement Executive

DTD

(Directorate of Research Materials)

The current DEF STAN series of Ministry of Defence U.K. now replace the earlier DEF, D.Eng.D, D.Eng R.D, CS and TS specifications issued by the Procurement Executive and other Directorates.


The Ministry of Defence, U.K. has also evolved a system of Joint Services Designations (JSD) covering products that are required by the Army, Navy and Air Force. These designations consist of groups of two or three letters defining the nature of the product followed by a number indicating its main property wherever possible.


LIST OF BRITISH JOINT SERVICES DESIGNATIONS

OILS

OM

Oil Mineral

The suffixed numbers generally represent the Viscosity (centistokes) at 40oC

OEP

Oil Extreme Pressure

OMD

Oil Mineral Detergent

OF

Oil Fatty

OC

Oil Compounded

OX

Oil Miscellaneous

GREASES

LG

Lime base

The suffixed numbers represent the approximate worked penetration.

XG

All other type of greases, mineral or synthetic

MISCELLANEOUS PRODUCTS

PX

Protectives , miscellaneous materials

Suffixed numbers have no technical significance

ZX

Speciality products

AL

Coolants, antifreeze de-icing fluids.

Accordingly OM-11 signifies a mineral oil with an approximate viscosity of 11 cst at 40oC and XG-293 is a grease having a worked penetration of about 293.

Inter-country products for the NATO member nations also have a system of nomenclature. This consists of a prefix defining the category followed by a number which is a serial one having no technical significance.

LIST OF NATO SYMBOLS


F

All fuels

O

All oils except those developed for some primary function than lubrication.

H

All oils where hydraulic properties are main consideration.

G

All greases except those developed for a special function.

C

All products possessing anti-corrosion properties.

S

All products developed for a special purpose.

P

All products for use as propellants.

The Joint Services Designations, NATO code numbers along with the governing product specifications originating from various member countries are also a part of an interchangeability system. In this system the products covered by the same JSD or NATO code are considered as standardized equivalents though they may individually conform to different specifications depending upon the country of origin e.g. Oil NATO O-135 governed by either the U.K. DEF STAN 91-99 (formerly DERD 2490) or the French AIR 3515 are considered interchangeable for all applications.


This is because the specifications emanate from the same or equivalent technical requirements, although the tests mentioned in them may differ. The system is also extended to cover definitions of Acceptable Products and Emergency Substitutes which may or may not apply to aircraft usage. The use of lubricants in aircraft engine types is authorised by the Controller of Aircraft release to service documents. Information on types of lubricants that may be used, including emergency substitutes is also shown in the aircraft's servicing manual and pilot's notes (flight manuals) together with relevant engineering safeguards.


Important

The above information is only a rough guide. You must consult the relevant authority for final product information. We will not be held responsible for any loss or shortcoming resulted due to the above information or information given in this web site, www.warefield.co.uk


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Lubricants - Grease - Fluids

AVIATION LUBRICANTS

(Defence Grade Only)

in JSD - Def Stan, Mil Specs, NATO &

all European military standards