Shares of Fastenal (NASDAQ: FAST) plunged 5.43% in pre-market trading on Monday following the release of the company's third-quarter earnings report. The industrial supplies distributor posted mixed results, with revenue slightly exceeding expectations but earnings falling short of analyst estimates.

Fastenal reported earnings per share of $0.29 for the quarter, missing the consensus estimate of $0.30. Despite the earnings miss, the company's revenue came in at $2.13 billion, marginally above the expected $2.129 billion and representing an 11.7% increase year-over-year. The company attributed the underwhelming performance to sluggish industrial production during the quarter, which weighed on demand for its products.

Despite the challenging market conditions, Fastenal showed some positive trends. The company's gross margin improved slightly to 45.3% from 44.9% a year ago, while operating margin increased to 20.7% from 20.3%. Fastenal also reported increased customer contract signings and higher average monthly sales per site across all spending levels. Additionally, the company's digital footprint continued to expand, representing 61.3% of sales, up from 61.1% a year earlier.

However, these improvements were not enough to offset investor concerns about the earnings miss and potential signs of slowing growth. The market reaction suggests worries about margin pressure and Fastenal's ability to maintain its growth trajectory in a challenging economic environment. As the trading session begins, investors will be closely monitoring the stock to see if it can recover from this early setback or if the pre-market plunge signals further weakness ahead.