The Evolution and Standards of Tower Bolts

 Introduction

Tower bolts are crucial for securing doors and windows, ensuring safety and functionality. The Indian Standard for tower bolts, now in its fifth revision, sets out detailed specifications and quality requirements for bolts made from non-ferrous metals. This standard is pivotal for maintaining the reliability and performance of hardware used in various applications.

Historical Background

The evolution of tower bolt specifications began in 1950, with key revisions in 1961, 1966, 1974, and 1978. During the fourth revision, the standard was divided into two parts: Part 1 for ferrous metals and Part 2 for non-ferrous metals. The latest revision updates these standards to reflect advancements in materials and manufacturing processes, aligning with current Indian Standards.

Types of Tower Bolts

The standard categorizes tower bolts into several types, each suited to specific applications:

Barrel Tower Bolts

  • Brass: Available in cast brass and rolled or drawn brass options.
  • Aluminium Alloy: Made from extruded sections of aluminium.
  • Zinc Alloy: Crafted from die-cast zinc alloy.

Skeleton Tower Bolts

  • Brass: Includes cast brass plates and staples with rolled or drawn brass bolts.
  • Aluminium: Features extruded sections of aluminium alloy.

Material and Manufacturing Standards

Tower bolts must meet stringent manufacturing standards to ensure quality and durability:

  • Stainless Steel: Ideal for high-humidity or coastal areas due to its rust resistance. Stainless steel bolts should meet specific grades like X07Crl8Ni9.
  • Material Quality: All materials used must adhere to required specifications to ensure the bolts are free from defects and have a smooth finish.

Dimensions and Finish

Accurate dimensions and finishing are essential for the proper functioning of tower bolts:

  • Brass Tower Bolts: Should be polished or plated according to specifications.
  • Aluminium Alloy: Must be anodized with a quality not less than Grade AC 10.
  • Zinc Alloy: Requires oxidation, bronzing, or plating as specified by the purchaser.

Marking and Packing

Proper marking and packing are vital for quality assurance and protection:

  • Marking: Each tower bolt should be marked with the manufacturer’s name or trademark. Products meeting BIS standards may carry the Certification Mark.
  • Packing: Bolts should be packed to protect them during transport. Aluminium alloy bolts, in particular, should be individually wrapped.

Conclusion

Understanding the specifications for tower bolts is crucial for selecting high-quality products from #doorkitmanufacturers. Adhering to these standards ensures that you receive reliable and durable hardware, whether you need a #doorhandle or a complete #doorkit. For manufacturers like Circle Industries, following these guidelines is essential for delivering top-notch products that meet industry standards and exceed customer expectations.

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#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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