Size to fastener breakaway torque, not install torque
Buying guides often show peak torque badges without mapping your breakaway need and rust allowance to a shopping class. ImpactFt starts from target ft-lb, then applies a rust factor used in shop breakaway practice.
Why this ladder is only 280 and 900
Verified VEVOR US cordless impact listings checked 2026-09-10 sit at a 280 ft-lb class and a 900 shopping class (listing ~958.8 ft-lb loosening / 922 tightening). Other mid sizes exist but are outside this site’s verified ladder. This is separate from click torque wrench range sizing on TorqueRange.
What SERP guides miss
Most pages compare brands or list peak torque without an interactive map from target ft-lb × rust factor to a purchase class with an explicit NO_MATCH path.
Practice rules this screen never relaxes
Use seized ×1.5 when fasteners are corroded or stuck — do not shop only to a clean catalog number. Confirm live torque claims and drive size on the listing. Ratings are manufacturer claims — verify the listing. Affiliate tracking is pending.
Class ladder on this site
Required ft-lb ≈ target_ftlb × factor. Factor 1.0 clean or 1.5 seized. 280 class if required ≤ 280; 900 class if required ≤ 958.8; else NO_MATCH. Specs checked 2026-09-10 on the linked product pages.