Understanding Tower Bolts – Specifications and Standards

 Introduction

Tower bolts are essential components for securing doors and windows, providing both functionality and security. The Indian Standard for tower bolts, now in its fifth revision, adopted by the Bureau of Indian Standards, offers comprehensive guidelines for tower bolts made of non-ferrous metals. This standard ensures quality and consistency across the industry.

Historical Context

The specification for tower bolts was first issued in 1950 and has since undergone several revisions: 1961, 1966, 1974, and 1978. The fourth revision split the standard into two parts: Part 1 for ferrous metal tower bolts and Part 2 for non-ferrous metal tower bolts. The current revision updates these standards to align with modern requirements and industry advancements.

Types of Tower Bolts

Barrel Tower Bolts

Barrel tower bolts are available in various materials, each offering distinct advantages:

  • Brass Barrel Tower Bolts: Made from cast brass barrels with rolled or cast brass bolts.
  • Aluminium Barrel Tower Bolts: Crafted from extruded sections of aluminium alloys.
  • Zinc Barrel Tower Bolts: Produced from die-cast zinc alloy.

Skeleton Tower Bolts

Skeleton tower bolts feature a distinctive design and are made from non-ferrous metals:

  • Brass Skeleton Tower Bolts: Made from cast brass plates with brass bolts.
  • Aluminium Skeleton Tower Bolts: Constructed from extruded aluminium alloy sections.

Manufacturing and Material Specifications

Tower bolts must be manufactured to high standards, ensuring they are free from defects and operate smoothly. For example, stainless steel tower bolts are ideal for high-humidity areas due to their rust-proof properties. The standard specifies materials and manufacturing processes, including the use of stainless steel grades like X07Crl8Ni9 or X04Crl8Ni10.

Dimensions and Finishing

Dimensions are carefully specified to ensure proper fit and functionality. Finishing varies according to the material:

  • Brass Tower Bolts: Polished or plated to meet purchaser requirements.
  • Aluminium Alloy Tower Bolts: Anodized with transparent or dyed finishes.
  • Zinc Alloy Tower Bolts: Oxidized or plated as specified.

Marking and Packing

Each tower bolt must be marked with the manufacturer’s name or trademark, and stainless steel bolts may also carry the BIS Certification Mark. Proper packing is crucial to protect the bolts during transportation, with individual wrapping for aluminium alloy bolts and appropriate labeling for cartons.

Conclusion

By adhering to these standards, manufacturers like Circle Industries ensure their products, including various types of tower bolts, meet high-quality benchmarks. Whether you are seeking #doorkitmanufacturers or specific items like #doorkitsetstainlesssteel, understanding these specifications helps in selecting the right components for security and durability.

Hashtags

#doorkitmanufacturers #doorkitmanufacturersinrajkot #doorkitmanufacturersinindia #doorkitmanufacturerinahmedabad #doorkitmanufacturersinaligarh #circleindustriesahmedabad #doorlatchset #doorkit #doorkitmanufacturers #doorkitsetstainlesssteel #aldropdoorkit #aldrop #aldropfordoor #aldropformaindoor #aldropandhandle #aldropbolt #cabinethandle #kitchencabinethandle #handleforcabinet #doorhandle #doorhandleset #maindoorhandles #doorstopper #towerbolt

 

 

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