Machinery's Handbook, 31st Edition
1866
RIVETED JOINTS
Double-Riveted Butt-Joint
(1) Resistance to tearing at outer row of rivets = (2) Resistance to shearing two rivets in double shear and one in single shear = (3) Resistance to tearing at inner row of rivets and shearing one rivet of the outer row = (4) Resistance to crushing in front of three rivets = (5) Resistance to tearing at inner row of rivets, and crushing in front of one rivet in outer row = (1) Resistance to tearing at outer row of rivets = (2) Resistance to shearing four rivets in double shear and one in single shear = (3) Resistance to tearing at middle row of rivets and shearing one rivet = (4) Resistance to crushing in front of four rivets and shearing one rivet = (5) Resistance to crushing in front of five rivets =
( P − D ) tS t
t
2 π
5
d S
4
s
P D tS d S 2 4 t s 2 π − + ^ h
p
3 tdS c
t c
P
t c
( P − 2 D ) tS t + tdS c
Triple-Riveted Butt-Joint
t
( P − D ) tS t
p P
2 π
9
d S
4
s
P D tS d S 2 4 t s 2 π − + ^ h
dtS d S 4 4 c s 2 π + 4 dtS c + dt c S c
t c
t c
American National Standard Rivets Standards for rivets published by the American National Standards Institute and the British Standards Institution are as follows: American National Standard Large Rivets.— The types of rivets covered by this standard, ANSI/ASME B18.1.2-1972 (R2016), are shown on pages 1868, 1869, and 1870. It may be noted, however, that when specified, the swell neck included in this standard is applicable to all standard large rivets except the flat countersunk head and oval countersunk head types. Also shown are the hold-on (dolly bar) and rivet set impression dimensions (see page 1870 ). All standard large rivets have fillets under the head not exceeding a 0.062-inch radius. The length tolerances for these rivets are given as follows: through 6 inches in length, 1 ∕ 2 - and 5 ∕ 8 - inch diameters, ± 0.03 inch; 3 ∕ 4 - and 7 ∕ 8 -inch diameters, ± 0.06-inch; and 1- through 1 3 ∕ 4 -inch di- ameters, ± 0.09 inch. For rivets over 6 inches in length, 1 ∕ 2 - and 5 ∕ 8 -inch diameters, ± 0.06 inch; 3 ∕ 4 - and 7 ∕ 8 -inch diameters, ± 0.12 inch; and 1- through 1 3 ∕ 4 -inch diameters, ± 0.19 inch. Steel and wrought iron rivet materials appear in ASTM Specifications A31, A131, A152, and A502. American National Standard Small Solid Rivets.— The types of rivets covered by this standard, ANSI/ASME B18.1.1-1972 (R2016), are shown on pages 1871 through 1873. In addition, the standard gives the dimensions of 60-degree flat countersunk head rivets used to assemble ledger plates and guards for mower cutter bars, but these are not shown. As the heads of standard rivets are not machined or trimmed, the circumference may be somewhat irregular and edges may be rounded or flat. Rivets other than countersunk types are fur nished with a definite fillet under the head, whose radius should not exceed 10 percent of the maximum shank diameter or 0.03 inch, whichever is the smaller. With regard to head dimen - sions, tolerances shown in the dimensional tables are applicable to rivets produced by the normal cold heading process. Unless otherwise specified, rivets should have plain sheared ends that should be at right angles within 2 degrees to the axis of the rivet and be reasonably flat. When so specified by the user, rivets may have the standard header points shown on page 1868 . Rivets may be made of ASTM Specification A31, Grade A steel; or may adhere to SAE Recommended Practice, Mechanical and Chemical Requirements for Nonthreaded Fasten - ers—SAE J430, Grade 0. When specified, rivets may be made of other materials.
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