How to find the right Structural Bolts AI guide
Written by an AI model from its trained knowledge.
What the AI looks for in Structural Bolts
- Specification
- ASTM F3125 Grade A325 or A490 heavy hex structural bolts, as the engineer specifies Structural connections are designed around a specific bolt grade.
- Matched assembly
- Use ASTM A563 heavy hex nuts and F436 hardened washers from the same lot, with certifications Inspectors expect traceable, compatible assemblies.
- Galvanizing restrictions
- Do not hot-dip galvanize A490-type bolts They are prone to hydrogen embrittlement.
- Pretensioning
- Use turn-of-nut, DTI washers, or tension-control bolts as specified Slip-critical joints depend on verified clamp load.
What to avoid
- Substituting Grade 5 or Grade 8 hex bolts for A325/A490
- Reusing pretensioned A490 or galvanized A325 bolts