About this document
A490 Bolts in Oversized Holes Guide by Vincent Chu is a document available to read on EtoBox.
The document discusses using 1 1/4 inch diameter A490 bolts in oversized holes with 5/16 inch thick F436 flat washers and direct tension indicators (DTIs). When the flat washer inside diameter exceeds specifications, it may not be possible to properly verify bolt preload using standard inspection procedures. The orientation of the flat washers and location of the DTI must be controlled to allow the inspection to work properly.
- Author
- Vincent Chu
- Language
- EN