How cordless impact sizing works
Breakaway torque, rust factor, and when NO_MATCH is honest.
Cordless impact shopping class
Cordless impact class from breakaway ft-lb
Enter target fastener breakaway torque and rust factor. Get the smallest 280 or 900 ft-lb cordless impact class — or NO_MATCH when the job exceeds this ladder.
Cordless impact shopping class
Result
Required ft-lb ≈ target_ftlb × rust factor. Factor = 1.0 (clean) or 1.5 (seized). Classes: 280 · 900 (max ~958.8 loosening). Above ceiling → NO_MATCH.
From measurement to decision
Open the full calculator
Same tool with room for examples.
280 vs 900 classes
When each VEVOR cordless impact class fits — and when none do.
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