Overview
The SCC Security Chain Super Z-8 SZ492 is a commercial snow chain that is sized by tire rather than by vehicle. Its tire list runs from 8.25-20 and 9-22.5 up to 355/50-22.5, and includes LT sizes such as LT285/75-18 and 12-16.5NHS.
SCC began in 1969 as a division of Burns Bros. Inc., based in Portland, Oregon. Beyond traction products in both cable and link styles, the company’s range covers bulk chain and accessories for industrial and transport use, cargo and load control products, and lifting products.
Key features
- Commercial snow chain for the tire sizes in the list
- Includes metric, LT and inch-based tire sizes
- Covers sizes from 8.25-20 to 355/50-22.5
- Manufacturer label reads universal fit
- Part number SZ492
Using chains on commercial trucks
Commercial snow chains work by gripping the tire tread to add traction on snow and ice, and they are most useful on heavy vehicles that need dependable grip in winter conditions. Because each chain is sized to a tire, the fit should be checked before the season starts rather than when conditions turn.
After fitting, drive a short distance at low speed and stop to re-tighten the chain, since new chains often settle. Check the tension at intervals during use and stop if the chain loosens or rubs the tire or vehicle. Clean and dry the chain before storing it, and inspect links or cables for wear.
- Confirm tire size before the season
- Re-tighten after a short drive
- Store clean and dry
Specifications
| Brand | SCC Security Chain |
|---|---|
| Part number | SZ492 |
| Model | Super Z-8 commercial snow chain |
| Tire sizes | 8.25-20, 9-22.5, 38×10.50-15, 235/80-22.5, 245/75-22.5, 245/80-22.5, 255/75-22.5, 285/65-20, LT285/65-20, 325/60-20, 12-16.5NHS, 275/50-24, 285/80-17, 295/75-17.5, 305/50-22, 305/70-18, 325/65-18, 325/80-16, 345/70-18, 355/50-22.5, 355/60-20, 35×13.50-15LT, 35×13.50-20LT, 36×12.50-15LT, 36×12.50-16.5LT, 37×12.50-15LT, 37×12.50-16.5LT, 37×12.50-17, 37×12.50-20LT, LT285/75-18, LT315/70-17 |
| Fitment | Universal fit (manufacturer label) |
Vehicle fitment
No vehicle is named for this chain. SCC labels it universal fit, but a snow chain has to match the tire, so the tire size is what decides fit.
Tire sizes that are not in the list above are not covered, so match your exact size.
Installation notes
Metric and LT sizes are treated as different sizes, so 285/65-20 and LT285/65-20 each need their own match. Check the exact size on the tire sidewall before ordering.
