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MIL-STD-403C.021043.pdf
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MIL-STD-403C.021043.pdf
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MIL-STD-403C
30 June 1992
SUPERSEDING
MIL-STD-403B
14 June 1968
MILITARY STANDARD
PREPARATION FOR AND INSTALLATION OF
RIVETS AND SCREWS, ROCKET,
MISSILE, AND AIRFRAMS STRUCTURES
AMSC N/A
FSC 1410
DISTRIBUTION STATEMENT A.
Approved for public release;
distribution is unlimited.
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MIL-STD-403C
FOREWORD
1.
This military standard is approved for use by all
Departments and Agencies of the Department of Defense.
2.
Beneficial comments (recommendations, additions,
deletions) and any pertinent data which may be of use in improving
this document should be addressed to: Commander, U.S. Army Missile
Command, ATTN:
AMSMI-RD-SE-TD-ST, Redstone Arsenal, AL 35898-5276
by using the Standardization Document Improvement Proposal
(DDForm
1426) appearing at the end of this document or by letter.
.
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MIL-STD-403C
CONTENTS
I
Paragraph
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1.
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1.1
2.
2.1
I 2.1.1
2.2
3.
3.1
3.2
3.3
3.4
3.5
3.5.1
3.5.2
3.6
4.
4.1
4.1.1
~o
4.2
4.2.1
4.2.2
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4.3
4.4
4.5
\ 4.5.1
4.5.1.1
4.5.2
4.5.2.1
4.5.3
4.5.4
5.
5.1
5.1.1
5.1.1.1
5.1.1.2
SCOPE
Purpose
APPLICABLE DOCUMENTS
Government documents
Specifications, standards, and handbooks
Order of precedence
DEFINITIONS
Definitions
Cocked head
Manufactured head
upset head (shop formed)
Dimpling
Draw dimpling
Modified-radius dimpling
Countersinking (machine countersinking)
GENERAL REQUIREMENTS
Hole formation
Hole sizes
Dimpling
Modified-radius dimpling
Cracked dimples
Countersinking
Combination dimple and countersinking
for rivets and screws
Cleaning and protective coatings
Finishing sequence
Sealing
Cleaning of mating surfaces
Removal of strippable coating
Materials which are to be stored after
drilling
Gap limitations between joined sheets
DETAILED REQUIREMENTS
Dimpled holes
Dimpling
Dimpling temperatures
Hot dimpling precaution
!&SE
1
1
2
2
2
2
4
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MIL-STD-403C
CONTENTS
Paragraph
5.2
5.2.1
5.2.2
5.2.2.1
5.2.3
5.2.4
5.2.5
5.2.6
5.2.7
5.2.7.1
5.2.7.2
5.2.7.3
5.2.7.4
5.2.7.4.1
5.2.7.5
5.2.7.6
5.2.8
5.3
5.3.1
5.3.2
5.3.3
5.3.4
5.4
6.
6.1
6.2
6.3
6.4
6.5
Table(s)
I
II
III
IV
Rivets
Conventional rivets
Pull-through and self-plugging blind rivets
Acceptable and unacceptable limits of upset
heads shall be as shown in Figure 4
Chemically expanded rivets
Rivet hole tolerance
Countersinking
Combination dimple and countersinking
Rivet heads
Manufactured rivet head height
Cocked heads
Upset heads
Malformed upset heads
Cracked upset heads
Marring of the manufactured head
Head gap
Rivet lengths
Screws
Hole screws
Oversize holes
Countersinking
Combination dimple and countersinking
Skin damage
NOTES
Intended use
Issue of DODISS
Metrication
Subject term (key word) listing
Changes from previous issue
TABLES
Holes for conventional
Holes for Dull-throuah
rivets
self-plugging
Holes for ;hemically-expanded rivets
Holes for screws
rivets
8
8
8
‘8
8
.-8.
9
9
9“.
9
9.
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●
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MIL-STD-403C
CONTENTS
Table(s)
!ZUilE
v For 2017-T rivets driven hard
16
VI For all rivets except 2017-T rivets
driven hard
17
VII Average nominal projection before driving
18
Figure(s)
.
1
2
3
.
4
5
6
7
8
Dimple size dimensions for rivets
Countersink dimensions for rivets
Combination dimple and countersink
dimensions for rivets
Acceptable and unacceptable conditions
Upset head diameter
Dimple dimensions for screws
Countersink dimensions for screws
Combination dimple and countersink
dimensions for screws
‘o
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