7-1. GENERAL.
a. Standard solid-shank rivets and the
universal head rivets (AN470) are used in aircraft
construction in both interior and exterior
locations. All protruding head rivets may be
replaced by MS20470 (supersedes AN470)
rivets. This has been adopted as the standard
for protruding head rivets in the United States.
b. Roundhead rivets (AN430) are used in
the interior of aircraft except where clearance
is required for adjacent members.
c. Flathead rivets (AN442) are used in
the interior of the aircraft where interference of
adjacent members does not permit the use of
roundhead rivets.
d. Brazierhead rivets (AN455 and
AN456) are used on the exterior surfaces of
aircraft where flush riveting is not essential.
e. Countersunk head rivets MS20426
(supersedes AN426 100-degree) are used on
the exterior surfaces of aircraft to provide a
smooth aerodynamic surface, and in other applications
where a smooth finish is desired.
The 100-degree countersunk head has been
adopted as the standard in the United States.
Refer to MIL-HD BK5 Metallic Materials and
Elements for Fight Vehicle Structures, and
U.S.A.F./Navy T./O. 1-1A-8, Structural Hardware.”
f. Typical rivet types are shown in table
7-10.

Monel rivets are used in special cases
for riveting high-nickel steel alloys and nickel
alloys. They may be used interchangeably
with stainless steel rivets as they are more easily
driven. However, it is preferable to use
stainless steel rivets in stainless steel parts.
h. Copper rivets are used for riveting
copper alloys, leather, and other nonmetallic
materials. This rivet has only limited usage in
aircraft.
i. Hi-Shear rivets are sometimes used in
connections where the shearing loads are the
primary design consideration. Its use is restricted
to such connections. It should be
noted that Hi-Shear rivets are not to be used
for the installation of control surface hinges
and hinge brackets. Do not paint the rivets before
assembly, even where dissimilar metals
are being joined. However, it is advisable to
touch up each end of the driven rivet with
primer to allow the later application of the
general airplane finish

7-2. MATERIAL APPLICATIONS.
a. Rivets made with 2117-T4 are the
most commonly used rivets in aluminum alloy
structures. The main advantage of 2117-T4 is
that it may be used in the condition received
without further treatment.
b. The 2017-T3, 2017-T31, and 2024-T4
rivets are used in aluminum alloy structures
where strength higher than that of the 2117-T4
rivet is needed. See Metallic Materials and
Elements for Flight Vehicle Structures
(MIL-HDBK-5) for differences between the
types of rivets specified here.
c. The 1100 rivets of pure aluminum are
used for riveting nonstructural parts fabricated
from the softer aluminum alloys, such as 1100,
3003, and 5052.
d. When riveting magnesium alloy
structures, 5056 rivets are used exclusively
due to their corrosion-resistant qualities in
combination with the magnesium alloys.
e. Mild steel rivets are used primarily in
riveting steel parts. Do not use galvanized
rivets on steel parts subjected to high heat.
f. Corrosion-resistant steel rivets are
used primarily in riveting corrosion-resistant
steel parts such as firewalls, exhaust stack
bracket attachments, and similar structures.

j. Blind rivets in the NASM20600
through NASM20603 series rivets and the mechanically-
locked stem NAS 1398, 1399,
1738, and 1739 rivets sometimes may be substituted
for solid rivets. They should not be
used where the looseness or failure of a few
rivets will impair the airworthiness of the aircraft.
Design allowable for blind rivets are
specified in MIL-HDBK-5. Specific structural
applications are outlined in NASM33522.
Nonstructural applications for such blind rivets
as NASM20604 and NASM20605 are contained
in NASM33557.
CAUTION: For sheet metal repairs to airframe,
the use of blind rivets must be
authorized by the airframe manufacturer or
approved by a representative of the FAA.
For more information on blind rivets, see page
4-19, f. of this document.

Read a continuation of this document here: AC-Aircraft-Hardware-Control-Caples-Turnbuckles

REQUEST A QUOTE