WINONA, Minn. — The Winona-based industrial supplier Fastenal told shareholders that its net sales in the latest quarter, almost $1.4 billion, were 10.3% ahead of a year earlier. Gross profits were up 4.7%. Sales were affected by a surge in providing personal protective gear for health workers to deal with the coronavirus pandemic, the company said. There were cutbacks in the company’s traditional products to make way for manufacturing PPEs, but PPE sales more than offset the decline, the company said.