Methodology guide
Limits, material bans, and when to stop shopping this ladder.
Calculator
Pop rivet mm calculator
Enter rivet diameter in mm. Get a 32 / 48 / 64 class or NO_MATCH. Soft Al/steel blind rivets only; confirm live noses and pull force; eye PPE; jaws; air bar/PSI.
Result
Worked checks: 2.4 → 32 · 4.0 → 48 · 6.4 → 64 · 8 → NO_MATCH. classLbs uses 32 / 48 / 64 for CTA matching.
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