Product image from current catalog dataProduct overview
AFF 350SS 3.5-Ton Heavy Duty Floor Jack (substituted for the Hein-Werner HW93642): What to Know
It's worth being upfront about this pick: the Hein-Werner HW93642 named in the original candidate list is a real 2-ton service jack still sold by industrial retailers like Northern Tool and JB Tools, but searches turned up no active Amazon.com listing for the jack itself, only for HW93642 hydraulic seal replacement kits. Rather than report a jack with no working Amazon link, the AFF 350SS was substituted, a 3.5-ton double-pumper service jack from American Forge & Foundry confirmed sold on Amazon under the listing verified here. AFF's own product page lists the 350SS at a 4 inch minimum height to a 19-1/2 inch maximum, giving it more capacity headroom than any other jack in this guide, though its 4 inch minimum is a bit taller than the true low-profile jacks above.
It's a steel jack and, at 119 lbs per AFF's spec sheet, the heaviest in this lineup, a direct tradeoff for the extra half-ton of rated capacity over the 3-ton jacks here. Like the Daytona, it uses a double-pump (dual-piston) hydraulic design, which AFF markets as its 'Lightning Lift' system for faster lift speed than a single-piston pump of similar capacity, though AFF's page doesn't publish an exact stroke count the way Daytona does.
AFF's manufacturer page is the most explicit of any product in this guide about safety certification, stating the 350SS is '2009 ASME/PALD compliant.' That's an older PALD designation rather than the newer ASME PASE standard referenced on some other jacks in this lineup; the two cover the same category of portable automotive lifting devices, with PASE effectively superseding and renaming PALD starting in the early 2010s, so a 2009 PALD compliance statement reflects when AFF last had the design certified rather than a lesser standard.
Like every jack in this guide, the 350SS raises a vehicle; it does not hold one up. Always transfer the load onto jack stands rated for the vehicle's weight before working underneath it.
Key Listed Features
3.5-ton rated capacity, the highest in this guide
4 inch to 19-1/2 inch lift range
Double-pump 'Lightning Lift' hydraulic system for faster lift speed than a single-piston jack
Manufacturer-stated 2009 ASME/PALD compliance; steel construction at approximately 119 lbs
