BIS Certification For Fastners – Threaded Steel Fastners - Hexagon Head Tower Bolts IS 12427 : 2001

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

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

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Anushka Pandey

Content Writer

She is an experienced content writer at ERCS Pvt. Ltd., an organization that assists companies with certification and regulatory support. She writes informative content on government certifications su...