information pertaining to the use and identification of
hardware and materials. The application of hardware
and materials on specific aircraft is not covered in the
volume. Specific aircraft application, usage, and
maintenance manual. This volume is of maximum
benefit to the mechanic who desires information about
bolts, nuts, rivets, clamps, fittings, plate nuts, torque
values, lockwire techniques, cotter pins, safety pins, Hi-
Shear rivets, etc. This volume furnishes the mechanic
mechanical functions which are used on all aircraft.
This volume is not a requisitioning authority, and
applicable repair part and special tool lists should be
consulted to obtain the unit of issue and National Stock
Number of the items required for maintenance.
1-2. Scope. General information to guide aircraft
maintenance personnel is covered within this volume;
however, no attempt has been made to include special
parts or equipment which are applicable only to
individual or special aircraft. Aircraft hardware, their
types, characteristics, and uses are presented in
Chapter 2. Materials used in ground servicing and
metals, phenolic and plastic materials, adhesives,
sealants, and cements, are contained in Chapters 3
Substitution or interchange of items of material for
maintenance of Department of the Army aircraft will not
be authorized, nor will orders be issued for shipment,
unless substitution or
interchangeability has been
authorized by the U.S. Army Aviation and Troop
Command (ATCOM) through one of the following
interchangeability data in supply manuals,
Interim information in the form of individual
replies to specific problems.
1-4. Responsibilities of Maintenance Activities.
Utilize substitute or interchangeable items only
when authorized by one of the methods
outlined in paragraph 1-3.
Department of the Army aircraft provide that
material furnished by the contractor meet the
outlined in paragraph 1-3.
interchangeability or substitution of parts,
1-5. Responsibilities of ATCOM. ATCOM will:
interchangeability information is published in
supply manuals, repair part and special tool
lists, and technical directives applicable to
specific Army aircraft.
components, assemblies, subassemblies, and
detailed parts to be utilized in support of
Determine and authorize substitution of raw
materials or stock, such as metal sheets, rods,
bars, chemicals, lubricants, etc., for use in
repair of Department of the Army aircraft
either by Department of the Army activities or
1-6. Recommended Changes to Department of the
Army Publications. Receipts of substitute items that
have not been approved as outlined in paragraph 1-3 to
be utilized for maintenance of Department of the Army
aircraft will be reported on Department of the Army
1-7. Consumable Materials. Refer to Chapter 7 for
consumable materials listed in this volume.
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