SL.

No.

Description of Material as per Specification

C %

Mn %

S %

P %

Si %

B %

1.

Specified Value

IS 1875 Cl-3/ IRS T-23

0.25-0.35

0.60-0.90

0.040 Max.

0.040 Max.

0.15-0.35

—

Track Bolt

RDSO/T-2659 & RDSO/T-2660

0.26

0.85

0.014

0.026

0.22

—

2.

Specified Value IS
1875 Cl-2A /IRS T-23

0.20-0.30

0.60-0.90

0.040 Max.

0.040 Max.

0.15-0.35

—

Track Nut 

RDSO/T-2659 & RDSO/T-2660

0.23

0.74

0.23

0.029

0.20

—

3.

Specified Value
IRS  T- 10,

IS 2062: 2011 Gr.
E250 Quality : BR

0.22 Max.

1.50 Max.

0.045 Max.

0.045 Max.

0.40Max.

—

MS Plates for M.S.Bracketw

RDSO/T-6932, RDSO/T-6933,

RDSO/T-6934, Angle Tie

Plate Size 10 mm

Plate Size 20 mm

Plate Size 25 mm

0.16

0.18

0.19

0.80

0.99

0.88

0.011

0.025

0.027

0.022

0.030

0.027

0.14

0.17

0.21

—

4.

Specified Value

IS 1367 Part-3

0.20– 0.55

N.A

0.035 Max.

0.035 Max.

N.A

.003 Max

H.T.S  Bolt 24dia x 90 ( P. Cl.
10.9 )

RDSO/T-8518 (From Lot)

0.37

—

0.017

0.014

—

.002

H.T.S  Bolt 24dia x 90 ( P. Cl.
10.9 )

RDSO/T-8518

(From assembled Imp. SEJ)

0.32

—

0.023

0.023

—

.001

5.

Specified Value

 IS 1367 Part-6

0.58 Max.

0.45 min.

0.058 Max.

0.048 Max.

N.A

—

H.T.S Nut  (P. Cl. 12)

RDSO/T-8518 (From Lot)

0.41

0.66

0.024

0.029

—

—

H.T.S Nut  (P. Cl. 12)

RDSO/T-8518

(From assembled Imp. SEJ)

0.34

0.51

0.036

0.031

—

—

6.

Specified Value

 IS  6649 Gr.45 C 8

0.40-0.50

0.60-0.90

0.040 Max

0.040 Max

0.15-0.35

—

Hardened Taper Washer

RDSO/T-8516, RDSO/T-8517

0.44

0.44

0.82

0.69

0.026

0.030

0.021

0.028

0.29

0.22

—

7.

Specified
Value 

IRS T- 42 Ref. IS
4072 Gr. 55Si7 

0.50-0.60

0.70-1.00

0.050 Max

0.050 Max

1.50-2.00

—

Single Coil Spring Washer T-10773

0.53

0.85

0.030

0.032

1.68

—

8.

Specified Value
IRS  T- 10,

 IS 2062: 2011 Gr. E250 Quality : A

0.23 Max

1.50 Max

0.045 Max

0.045 Max

0.40Max

—

Plate Screw RDSO/T-3915, RDSO/T-3911

0.15

0.67

0.024

0.029

0.18

—