Cross-recessed countersunk head wood screws are fasteners made for wood and applications requiring a flush finish — the countersunk design allows the screw to sink into the surface of the material so it sits below the surface, giving a smooth, finished appearance once installed. The cross-recessed feature refers to the cross-shaped indentation on the screw head, which allows the use of different cross-head screwdrivers, including Phillips and Pozidriv, for better grip and ease of use. IS 18509:2023 specifies detailed requirements for material properties, thread configurations, recess depth, and countersunk head dimensions.

Tests

Mandatory Tests:

1. Dimensional Check (Head Diameter, Recess Depth, Thread Configuration)

2. Tensile Strength Test

3. Torque Test

4. Corrosion Resistance Test

5. Pull-Out Resistance Test

Optional Tests:

1. Shear Strength Test

2. Coating/Finish Inspection

Benefits of Obtaining ISI Mark for Cross-recessed Countersunk Head Wood Screws

Here are the key benefits of getting ISI Mark certification:

• Government Quality Assurance: Certified products are trusted for their precision, strength, and reliability, fostering consumer confidence and enhancing market acceptance.

• Mandatory Compliance: Goods or articles of Cross Recessed Screws must adhere to IS 18509:2023 and bear the Standard Mark under a license from the Bureau, in accordance with Scheme-I of Schedule-II to the Bureau of Indian Standards (Conformity Assessment) Regulations, 2018.

• Enhanced Market Competitiveness: Manufacturers who adhere to this standard improve the trust and credibility of their products, while consumers benefit from screws that meet high safety and performance standards.

• Consumer Trust: Securing BIS certification reflects a manufacturer's commitment to quality, regulatory compliance, and production excellence.

• Consistency and Precision: The standard lays down requirements for the dimensions of screws — type, length, and diameter — to provide consistency from one batch to another.

Frequently asked questions (FAQ)

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