A
fastener or fastening is a hardware device that mechanically joins or affixes
two or more objects together. In general, fasteners are used to create non-permanent
joints; that is, joints that can be removed or dismantled without damaging the
joining components. A threaded fastener is a discrete
piece of hardware that has internal or external screw threads. It falls
into the overall fastener family. They are usually used for the assembly of
multiple parts and facilitate disassembly. The most common types are the screw,
nut and bolt. Hex bolts used to fasten wood to wood, or metal to wood. Tower
Bolt is a rod-shaped bolt for fastening a door or the like, attached to one
side of the door at the edge and sliding into a cylindrical casing on the frame
of the opening.
BIS is a statutory
institution established under the Bureau of Indian Standards Act, 1986 to promote harmonious development of the
activities of standardization, marking and quality certification of goods
and attending to connected matters in the country.
Fasteners – Threaded Steel
Fasteners – Hexagon Head Tower Bolts
product has been specified in IS 12427 : 2001
by Bureau of Indian Standards.
Scope
1.1
This standard covers the requirements for hot-dip galvanized hexagon head
transmission tower bolts in the size range M12 to M24for use in the
construction of transmission towers, sub-stations and similar steel structures.
1.2
The bolts covered in this standard are not suitable for applications requiring
improved low temperatures characteristics.
References
|
IS 1367 :
Part 2 : 1979 |
Technical
supply conditions for threaded steel fasteners: |
|
Part
2 Product grades and tolerances |
|
|
IS 1367 :
Part 3 : 1991 |
Fasteners
- Threaded steel - Technical |
|
ISO
898-1 : 1988 |
supply
conditions: |
|
Part
3 Mechanical properties and test methods for bolts, screws and studs with full
loadability |
|
|
IS 1367 :
Part 9 : Sec 1 : 1993 |
Technical
supply conditions for threaded |
|
ISO
6157-1 : 1988 |
steel
fasteners: |
|
Part
9 Surface discontinuities, |
|
|
Section
1 Bolts, screws and studs for general applications |
|
|
IS 1367 :
Part 13 : 1983 |
Technical
supply conditions for threaded steel fasteners: |
|
Part
13 Hot-dip galvanized coatings on threaded fasteners |
|
|
IS 1367 :
Part 17 : 1996 |
Industrial
fasteners - Threaded steel |
|
ISO
3269 : 1988 |
fasteners
- Technical supply conditions: |
|
Part
17 Inspection, sampling and acceptance procedure |
|
|
IS 1367 :
Part 18 : 1996 |
Industrial
fasteners - Threaded steel fasteners - Technical supply conditions: |
|
Part
18 Packaging |
|
|
IS 1368 :
1980 |
Dimensions
for ends of parts with |
|
ISO
4753 : 1983 |
external
ISO metric threads |
|
IS 2016 :
1967 |
Plain
washers |
|
IS 2334 :
2001 |
ISO
general purpose metric screw |
|
ISO
1502 : 1996 |
thread
- Gauges and gauging |
|
IS
4218 |
ISO
general purpose metric screw threads: |
|
Part 1 :
2001 |
Basic
profiles |
|
ISO
68-1 : 1998 |
|
|
Part 2 :
2001 |
General
plan |
|
ISO
261 : 1998 |
|
|
Part 3 :
1999 |
Basic
dimensions |
|
ISO
724 : 1993 |
|
|
Part 4 :
2001 |
Selected
sizes for screws, bolts and |
|
ISO
262 : 1998 |
nuts |
|
IS 4759 :
1996 |
Hot-dip
zinc coatings on structural steel and other allied products |
|
IS 14394 :
1996 |
Industrial
fasteners - Hexagon nuts of product grade C - Hot-dip galvanized
-Specification (size range M12 to M36) |
Following are the Testing Parameters :
·
Dimensions
·
Threads
·
Nuts
·
Washers
·
Material
·
Tensile
Test
·
Proof
Load Test
·
Head
Soundness Test
·
Torsion
Test
·
Impact
Test
·
Hardness
Test
·
Decarburization
Test
·
Carburization
Test
·
Retempering
Test
·
Finish
·
General
Requirement
·
Thread
Requirement
·
Stress
under proof load
·
Surface
Integrity Inspection
·
Hot
dip galvanizing
BIS
Certification in India
It is always better to consult with experience team such as ERCS Pvt. Ltd. for smooth certification process.
For more information, please feel free to contact us at info@elitasrcs.com or call at +91-9076611770 / +91-9076611766.
