Metric Fasteners

Current model Isuzu vehicles are primarily dimensioned in the metric system. Many of the fasteners used on Isuzu vehicles are metric, but are very close in dimension to well-known inch system fasteners. Use replacement fasteners which match the original equipment fasteners in the following ways:
- Nominal diameter
- Thread pitch
- Strength
Original equipment metric fasteners (except beauty bolts, like exposed bumper bolts and cross-recess head screws) are identified by a marking or a number which indicates the strength of the material in the fastener.
Metric cross-recess screws are identified as either Posidriv or Type1A. Either Posidriv or Type 1A cross-recess screwdrivers can be used in Posidriv recess screw heads. However, Type 1A cross-recess screwdrivers perform better.