ITR of Screw Clamp for Fish plate RT- 5856
1. Specification/Drawing : RDSO Drg. No T- 5856
Alt. Nil;
IRS M-37/1964 (Incorporating
Corrigendum No. 1 to 3) & IRS T-6
2. Date of Inspection :
3. Size of Lot :
|
S. No. |
Parameter |
Value Specified |
Observations |
Remarks |
|
(a) |
Visual |
Material
should be free from visual surface defects, sharp edges and other harmful
defects.
Leaf
spring to be welded with screw clamp body (6mm fillet weld)
|
Checked
& Found Satisfactory |
Satisfactory |
|
(b) |
Dimensional |
As
per Drg No. RT-5856 Alt.-Nil |
Sheet
Enclosed |
Dimensional
Sheet attached
|
|
(c) |
Physical
verification of components in Screw Clamp Assembly |
As
per Drg No. RT-5856 Alt.-Nil
i) Screw Clamp body- IRS M-37
ii)
Leaf spring- IS:3195 Gr. 55Si7 (welded with arm’s end of clamp)
iii)
Hex. Bolt & Nut M33- IS:1363
iv)
M.S. Ring & M.S. Washer
|
Sheet
Enclosed |
Satisfactory |
|
S. No. |
Parameter |
Value Specified |
Observations |
Remarks |
|
(d) |
Screw Clamp |
|
|
|
|
d.1 |
Chemical
composition |
As
per Cl. 3.1 of IRS
M-37/1964 (Corrigendum No. 1 to 3)
%S-
0.06 (max) %P-
0.06 (max)
|
Sheet
Enclosed |
Test
method- As
per relevant parts of IS:228
|
|
e.1 |
Chemical
test |
As
per IS:3195/92 Grade 55Si7 (Reaffirmed
2001)
|
Sheet
Enclosed |
Test
method- As
per relevant parts of IS:228 or any other established instrumental/ chemical
method.
|
|
|
Ladle Analysis
%C 0.50-0.60 %Si 1.50-2.00 %Mn 0.80-1.00 %S 0.040 max. %P 0.040 max. |
Check Analysis Permissible Variation %C ±0.03 %Si ±0.05 %Mn ±0.04 %S +0.005 %P +0.005
|
||||
|
e.2 |
Hardness |
As
per Drg. RT-5856
30-35
HRC
OR
As
per IS:3195/92 Grade 55Si7 (Reaffirmed
2001)
|
Sheet
Enclosed |
Test
method- As
per IS:1500
|
|
S. No. |
Parameter |
Value Specified |
Observations |
Remarks |
|
(f) |
Hexagonal Bolt & Nut
M33 |
|
|
|
|
f.1 |
Property
Class & thread |
For
Hexagonal Bolt as per IS:1363 (*Part-2)/2002
For
Hexagonal Nut as per IS:1363 (*Part-3)/2002 |
Sheet
Enclosed |
Property Class for Bolt 4.8 & Nut 5 |
|
(g) |
M.S.
Washer & M.S. Ring |
Material
**specification not specified in RDSO
Drg. No T- 5856 Alt.-Nil
|
Sheet
Enclosed |
IS 2062-2011, E-250A |
|
(h) |
Marking |
Part
No. RT-5856 to be stamped 6mm high at location specified in drawing.
|
RT-5856 |
|
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