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Pan head screws with Type H or Type Z cross recess may look like small parts but they carry a big responsibility in manufacturing and assembly work. These screws are used in electronics, machines, appliances and many everyday products. Because they are used in such important places the Government of India has made BIS ISI certification compulsory for them
The purpose of this article is to explain the certification process in a simple, clear way, without losing the technical details that matter.
Pan head screws have a head that looks slightly rounded on top with a flat bearing surface below. This shape lets them sit neatly on surfaces without sinking in. The cross recess either Type H or Type Z controls how strongly a screwdriver can grip the screw
These screws are often chosen for jobs that need:
You'll find them in furniture fittings, electrical items, control panels and even light machinery. Manufacturers use steel, stainless steel or non-ferrous metals depending on the product’s purpose. This is important because the standard IS 7483 also expects these screws to meet specific material and mechanical requirements
BIS ISI Mark Registration for Drywall Screws - IS 18507: 2024
The Indian Standard IS 7483 (the 2018 version aligned with ISO 7045) lays down the complete technical structure for these screws. It may feel like a dry technical document but it plays a key role. A few things it covers include:
The government has placed pan head screws with Type H or Z recess under a Quality Control Order (QCO). This makes BIS certification compulsory, not optional. So, if any manufacturer Indian or foreign wants to sell these screws in India they must obtain the ISI mark
This requirement reduces low-quality items in the market and encourages companies to follow proper testing and quality systems. It also protects users especially industrial buyers, from using screws that may break, strip or fail under stress
Most people who deal with these screws will need BIS certification. This includes:
Some exceptions exist, but they are narrow. For example, screws that are manufactured only for export do not fall under the domestic QCO. Similarly, very small imports for testing or R&D purposes may not require ISI marking. But any commercial sale in India absolutely requires compliance.
BIS ISI Mark Registration for Chipboard Screws - Specification IS 18508: 2024
Although the process may feel lengthy, BIS certification offers clear benefits:
For industries where small parts can affect the performance of big systems, the ISI mark can help a business stand out.
Every manufacturer has to go through a similar sequence. The steps generally look like this:
The manufacturer submits an online form with details about the screw type, manufacturing setup, quality practices, and materials used.
BIS looks at drawings, dimensions, raw material certificates, process flow and other technical documents
A BIS officer visits the unit. They check machines, testing equipment, batch tracking, and quality control methods
Samples are picked during inspection and sent to a BIS-recognized laboratory. The lab tests them for dimensions, mechanical strength, recess accuracy, and coating quality.
If all test results match IS 7483, the manufacturer receives permission to use the ISI mark.
After getting the license, the manufacturer must continue testing samples and maintaining quality records. BIS may visit again anytime.
The timeline varies. Indian factories often get approval in 4–8 weeks. Foreign manufacturers take longer because they must appoint an AIR (Authorized Indian Representative) and arrange sample shipment and documentation.
Once certified, the screws or their packaging need to display:
Most manufacturers print the mark on bulk packaging because placing it on the screw surface is not always practical.
These screws appear in dozens of sectors, including:
Their design offers a good balance of grip, torque capacity, and aesthetic finish, which is why industries rely on them heavily.
Not only does the BIS ISI certification of the pan head screws with a Type H or Type Z recess make a formal requirement. It makes the screws work in the field well. Be it the manufacturing of these screws in India or they are imported, then adhering to the IS 7483 and ensuring the BIS approval will assist in gaining the confidence of the buyers and keep your business on track.
Nishi Chawla
23 Jan, 2026
Nishi Chawla
23 Jan, 2026
Nishi Chawla
22 Jan, 2026
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