
Understanding BIS Certification for Countersunk Flat Head Screws (Common Head Style) With Type H or Z Cross Recess Of Product Grade A And Property Class 4.8 as Per IS 7485 (Part 1): 2018
In the field of fastening solutions, Countersunk Flat Head Screws (Common Head Style) with Type H or Z Cross Recess are essential components, engineered to provide a seamless and flush finish. Governed by the standards set forth in IS 7485 (Part 1): 2018, these screws are meticulously designed for precision, durability, and performance. Obtaining BIS Certification for Countersunk Flat Head Screws (Common Head Style) With Type H or Z Cross Recess Of Product Grade A And Property Class 4.8 is a crucial step for manufacturers to ensure compliance with national and international benchmarks, enhance product credibility, and establish consumer trust.
At Diligence Certifications, we specialize in guiding manufacturers through the BIS certification process, ensuring compliance with IS 7485 (Part 1): 2018. This article provides an in-depth overview of the standard, the certification process, testing requirements, and the role of Diligence Certifications in achieving certification success.
Key Highlights of IS 7485 (Part 1): 2018
The table below outlines the key specifications of the standard:
Parameter | Specification |
Head Type | Countersunk Flat Head (Common Head Style) |
Recess Type | Type H (Phillips) or Type Z (Pozidriv) |
Product Grade | Grade A (High Precision) |
Property Class | 4.8 (Indicating material strength and hardness) |
Material | Carbon Steel, Alloy Steel |
Dimensions | As specified in the standard for compatibility and uniformity |
Surface Finish | Electroplated coatings or other specified finishes for corrosion resistance |
Applications | Used in industries such as automotive, construction, electronics, and engineering |
These specifications ensure that countersunk flat head screws are highly functional, durable, and suitable for diverse industrial applications. Compliance with IS 7485 (Part 1): 2018 guarantees uniformity and reliability.
Importance of BIS Certification
Obtaining BIS Certification for Countersunk Flat Head Screws (Common Head Style) With Type H or Z Cross Recess Of Product Grade A And Property Class 4.8 offers numerous advantages:
- Enhanced Market Credibility: Certification demonstrates adherence to recognized standards, increasing consumer confidence.
- Regulatory Compliance: Certification ensures compliance with Indian regulatory requirements, enabling seamless market access.
- Global Acceptance: BIS-certified products meet international quality benchmarks, supporting export ambitions.
- Quality Assurance: Certification reflects stringent quality control, ensuring product reliability.
- Competitive Advantage: Certified products are more likely to be chosen by quality-conscious customers and stakeholders.
BIS Certification Process for Countersunk Flat Head Screws
The certification process involves several steps to ensure compliance with IS 7485 (Part 1): 2018. Here’s an overview:
- Application Submission:
- Submit the BIS application form with details about the product, manufacturing processes, and testing facilities.
- Product Testing:
- Submit samples to a BIS-approved laboratory for testing against IS 7485 (Part 1): 2018 specifications. Tests focus on dimensions, mechanical properties, surface finish, and other critical parameters.
- Factory Inspection:
- BIS officials conduct an inspection of the manufacturing facility to verify compliance with the prescribed standards. This includes reviewing production processes and quality control systems.
- Documentation Submission:
- Provide a detailed Scheme of Inspection and Testing (SIT) outlining quality control measures and testing protocols.
- Grant of Certification:
- Upon successful completion of testing and factory inspection, BIS certification is granted, allowing the use of the ISI mark.
- Surveillance:
- BIS conducts periodic surveillance and random testing of certified products to ensure ongoing compliance.
List of Test Equipment for Compliance
To meet the requirements of IS 7485 (Part 1): 2018, manufacturers need access to the following test equipment:
- Micrometers and Vernier Calipers: For measuring dimensions such as head diameter, thread length, and recess depth.
- Torque Testing Machines: To assess the performance of the recess and head under specific torque conditions.
- Hardness Testers: For verifying material hardness to meet property class 4.8 specifications.
- Tensile Testing Machines: To evaluate the mechanical strength and load-bearing capacity of the screws.
- Salt Spray Test Chambers: For testing corrosion resistance of surface finishes.
- Thread Gauges: To check thread pitch, angle, and compatibility with corresponding components.
Availability of this equipment ensures that manufacturers can consistently produce screws that meet the BIS standard.
Scheme of Inspection and Testing (SIT)
The SIT is a vital document that outlines the quality control measures a manufacturer must implement to ensure compliance with IS 7485 (Part 1): 2018. Key components include:
- Raw Material Inspection:
- Test the chemical and mechanical properties of incoming materials to verify their suitability.
- In-Process Monitoring:
- Inspect critical parameters such as recess formation, thread rolling, and countersinking during production.
- Final Testing:
- Conduct thorough tests on finished screws, including dimensional checks, hardness testing, and corrosion resistance testing.
- Non-Conformance Management:
- Establish protocols for identifying, addressing, and preventing defects.
- Documentation and Record Keeping:
- Maintain comprehensive records of inspections, test results, and corrective actions to demonstrate compliance during audits.
Applications of Countersunk Flat Head Screws
These screws are widely used across various industries due to their flush and aesthetic finish, reliable performance, and ease of installation. Applications include:
- Automotive: Secure assembly of components requiring precision and durability.
- Construction: Used in structural and decorative installations.
- Electronics: Ideal for fastening compact and lightweight devices.
- General Engineering: Suitable for machinery and tools where a flat, flush surface is needed.

Challenges in Achieving BIS Certification
Manufacturers may encounter challenges during the certification process, including:
- Understanding Technical Standards: IS 7485 (Part 1): 2018 involves detailed technical specifications that may be complex to interpret.
- Ensuring Compliance Readiness: Aligning manufacturing processes and facilities with BIS requirements can be resource-intensive.
- Testing Delays: Limited availability of BIS-approved labs may lead to delays.
- Extensive Documentation: Preparing a comprehensive SIT and maintaining records requires meticulous effort.
Diligence Certifications simplifies these challenges by offering expert guidance and tailored solutions.
How Diligence Certifications Can Help
Diligence Certifications provides end-to-end assistance for manufacturers seeking BIS certification. Our services include:
- Expert Consultation: Detailed guidance on IS 7485 (Part 1): 2018 requirements and compliance strategies.
- Documentation Support: Assistance with SIT preparation, application forms, and audit documentation.
- Pre-Certification Assessment: Identifying and addressing potential non-conformities before formal testing.
- Audit Assistance: Support during BIS factory inspections to ensure successful outcomes.
- Post-Certification Services: Ongoing support to maintain compliance and manage surveillance inspections.
With Diligence Certifications, manufacturers can achieve certification efficiently and confidently.
Conclusion
Obtaining BIS Certification for Countersunk Flat Head Screws (Common Head Style) With Type H or Z Cross Recess Of Product Grade A And Property Class 4.8 is a critical milestone for manufacturers committed to delivering high-quality, reliable fastening solutions. Certification ensures compliance with IS 7485 (Part 1): 2018, enhancing product credibility, marketability, and consumer trust.
At Diligence Certifications, we provide comprehensive support to simplify the certification process. From initial consultation to post-certification surveillance, our expertise ensures a seamless journey toward compliance. Partner with Diligence Certifications to achieve BIS certification with ease and confidence, and secure your position in the competitive global market.