INDASCO products meet international quality standards, providing fasteners trusted across industries worldwide. Certified processes and strict inspections ensure every piece delivers consistent excellence and reliability.
Our high-strength bolts are engineered for heavy-duty applications, supporting massive loads with unmatched safety. From bridges to machinery, INDASCO delivers performance where strength truly matters.
Beyond traditional fasteners, INDASCO focuses on innovative designs and custom solutions tailored to client needs. We combine technology and craftsmanship to deliver smarter fastening systems for modern industries.
Each category level on our website provides a clear structure that helps you navigate smoothly between different product groups. Here, you can view all related subcategories along with the products that belong to them. This approach allows you to quickly identify specifications, explore alternatives, and access technical details without confusion. Whether you are sourcing for a project, comparing standards, or selecting the exact item required, this section gives you a reliable starting point to proceed with confidence.
![Cross Recess Indented Regular and Large Hex Head Screws [TABLE 2.2.9-2 I] — ASME Hex Bolts-Screws, Indasco product B-01-0005](https://indasco.com/wp-content/uploads/2026/09/B-01-0005-Th.jpg)
ASME B 18.6.3 (H9B-I) - 2024
Cross Recess Indented Regular and Large Hex Head Screws [TABLE 2.2.9-2 I]

ASME B 18.6.3 (T30-I) - 2013
Cross Recess Indented Regular and Large Hex Head Screws
![Hex Bolts [Table 2] (ASTM A307 / A354 / A394) — ASME Hex Bolts-Screws, Indasco product B-01-0003](https://indasco.com/wp-content/uploads/2026/09/B-01-0003-Th.jpg)
ASME B 18.2.1 (T2) - 2012
Hex Bolts [Table 2] (ASTM A307 / A354 / A394)
![Heavy Hex Bolts [Table 3] (ASTM A307 / A394) — ASME Hex Bolts-Screws, Indasco product B-01-0002](https://indasco.com/wp-content/uploads/2026/09/B-01-0002-Th.jpg)
ASME B 18.2.1 (T3) - 2012
Heavy Hex Bolts [Table 3] (ASTM A307 / A394)

ANSI B18.2.3.5M - 1979 (R2016)
Metric Hex Bolts (SAE J1199, ASTM F568)
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