BIS Certification For Tower Bolts Ferrous Metals IS 204 (PART 1) : 1991

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. These may be ferrous or non-ferrous.

For bolts made of ferrous metals:

1. Barrel Tower Bolts:

a) Mild steel barrel tower bolts with mild steel barrel and mild steel bolt.
b) Mild steel barrel tower bolts with mild steel barrel and cast iron bolt.

2. Semi-Barrel Tower Bolts:

a) Mild steel semi-barrel tower bolts, full cover with mild steel sheet pressed barrel and mild steel bolt.
b) Mild steel semi-barrel tower bolts, full cover with mild steel sheet pressed barrel and cast iron bolt.
c) Mild steel semi-barrel tower bolts, open cover with mild steel sheet pressed barrel and mild steel bolt.
d) Mild steel semi-barrel tower bolts, open cover with mild steel sheet pressed barrel and cast iron bolt.

3. Riveted or Spot Welded Tower Bolts:

a) Mild steel tower bolts riveted type with back plate and mild steel bolt and open staple.
b) Mild steel tower bolts riveted type with back plate and cast iron bolt and open staple.

4. Skeleton Tower Bolts:

a) Mild steel skeleton tower bolts with steel sheet pressed plate and staples and mild steel bolt.

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.

Tower Bolts – Ferrous Metals product has been specified in IS 204 (Part 1) : 1991 by Bureau of Indian Standards.

Scope

This standard (Part 1) lays down the requirements for tower bolts made of ferrous metals.

References

IS 210 : 1978 Grey iron castings

IS 513 : 1986 Cold rolled low carbon steel sheets and strips

IS 1068 : 1985 Electroplated coatings of nickel plus chromium and copperplus nickel plus chromium on iron and steel

IS 1079 : 1988 Hot rolled carbon steel sheet and strip

IS 1378 : 1987 Oxidized-copper finishes

IS 1573 : 1986 Electroplated coatings of zinc on iron and steel

IS 1977 : 1975 Structural steel (ordinary quality)

IS 6760 : 1972 Slotted countersunk head wood screws

Raw Material :

As per Cl.4 and Table 5 of IS 204 (Part 1): 1991

Possible Tests in a day :

Manufacture (Cl. 5), Dimensions (Cl. 6), Finish- Coating
thickness, as applicable (Cl. 7)

Following are the Testing Parameters :

·       Material

·       Manufacture

·       Dimension

·       Tolerances

·        

·       Finish

o   Bright finished/ Bright stain finished

o   Test for Ni-Cr plating

o   Test for Copper oxidizing

o   Test for Zinc plating

BIS Certification in India

It is always better to consult with experience team such as ERCS Pvt. Ltd. for smooth certification process.

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