Our bolts are crafted with exact threading to guarantee seamless assembly and superior holding power. From automotive to heavy industry, INDASCO bolts deliver strength and reliability in every critical connection.
Designed to withstand extreme loads, our bolts ensure long-lasting performance under the toughest conditions. INDASCO guarantees durability, safety, and uncompromising quality across all industrial applications.
INDASCO bolts provide unmatched fastening security for every project. With advanced production standards, they deliver precision, consistency, and maximum stability in structural and mechanical uses.
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ASME B 18.2.6 - 2010
Heavy Hex Structural Bolts (ASTM A 325 / ASTM A 490)
![Heavy Hex Bolts [Table 3] (ASTM A307 / A394) — ASME Hex Structural Bolts, Indasco product B-03-0002](https://indasco.com/wp-content/uploads/2026/09/B-03-0002-Th.jpg)
ASME B 18.2.1 (T3) - 2012
Heavy Hex Bolts [Table 3] (ASTM A307 / A394)

ANSI B 18.2.3.6M (J1199,F568,A962,A320) - 1979 (R2006)
Metric Heavy Hex Bolts

ISO 15071 - 1999
Hexagon Bolts with Flange - Small Series - Product Grade A

ISO 15071 - 2011
Hexagon Bolts with Flange - Small Series - Product Grade A

ISO 15072 - 1999
Hexagon Bolts with Flange with Metric Fine Pitch Thread - Small Series - Product Grade A

ISO 4162 - 2012
Hexagon Bolts with Flange - Small Series - Product Grade A with Driving Feature of Product Grade B
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