IS 549 Split Pins

IS 549 Split Pins

Nominal Size 0.6 0.8 1 1.2 1.8 2 2.5 2 3.2 4 5 6.3 8 10 13 15 29
d max. 0.5 0.7 0.9 1.0 1.4 1.8 2.3 2.9 3.7 4.6 5.9 7.5 9.5 12.4 15.4 19.3
min. 0.4 0.6 0.8 0.9 1.3 1.7 2.1 2.7 3.5 4.4 5.7 7.3 9.3 12.1 15.1 19.0
a max. 1.6 1.6 1.6 2.50 2.50 2.50 2.50 3.2 4 4 4 4 6.30 6.30 6.30 6.30
min. 0.8 0.8 0.8 1.25 1.25 1.25 1.25 1.8 2 2 2 2 3.15 3.15 3.15 3.15
b = 2 2.4 3 3 3.2 4 5 6.4 8 10 12.8 16 20 26 32 40
c max. 1.0 1.4 1.8 2.0 2.8 3.6 4.6 5.8 7.4 9.2 11.8 15.0 19.0 24.8 30.8 38.5
min. 0.9 1.2 1.6 1.7 2.4 3.2 4.0 5.1 6.5 8.0 10.3 13.1 16.6 21.7 27.0 33.8
Corresponding
diameter		 Bolts over - 2.5 3.5 4.5 5.5 7 9 11 14 20 27 39 56 80 120 170
to 2.5 3.5 4.5 5.5 7 9 11 14 20 27 39 58 80 120 170 --
Clevis pins over - 2 3 4 5 6 8 9 12 17 23 29 44 69 110 180
to 2 3 4 5 6 8 9 12 17 23 29 44 69 110 180 --

1) Nominal size = diameter of the split pin hole; for the pin hole diameter the following classess are recommended.
H13 for nominal size ≤ 1.2
H14 for nominal size > 1.2

2) For railway applications and in cases where split pins in clevis pins are subjected to alterneting transverse forces, It is recommended to use the next larger split pins size to that specified in this table.

Nominal lengths l and commercial lengths

Dimensions in millimetres

Length
l		 Nominal size
nom. min. max. 0.6 0.8 1  1.2 1.6 2  2.5 3.2 4  5  6.3 8  10 13 16 20
4 3.5 4.5
5 4.5 5.5
6 5.5 6.5
8 7.5 8.5
10 9.5 10.5
12 11 13
14 13 15
16 15 17 Range of
18 17 19
20 19 21
22 21 23
25 24 26
28 27 29
32 30.5 33.5 commercial
36 34.5 37.5
40 38.5 41.5
45 43.5 46.6 lengths
50 48.5 51.5
56 54.5 57.5
63 61.5 64.5
71 69.5 72.5
80 78.5 81.5
90 88 92
100 98 102
112 110 114
125 123 127
140 138 142
160 158 162
180 178 182
200 198 202
224 222 226
250 248 252
280 278 282

Requirements and reference International Standards

Material






 Steel (St)
Copper-zinc alloy (Cu Zn)
Copper (Cu)
Aluminimum alloy (Al)
Austentic stainless steel (A)

Other materials as agreed between customer and supplier.
Ductility


 Each leg of the split pin shall be capable of withstanding being bent
back upon itself once, with no visible indication of fracture occuring at
the point of bend
Surface Finish



 Plain i.e parts to be supplied in natural finish, treated with a protective
lubricant, or with other coating as agreed between customer and
supplier. For electroplated coatings, see ISO 4042. For phospate
coating see ISO 9717.
Workmanship



 Pins shall be free of burrs, irregularities and detrimental defects

The eye shall be as circular as possible. The cross-section of the two
staright legs together shall be circular.
Accpetability For acceptance procedure, see ISO 3269