Question
How do you determine the grade of a bolt?

Answer
Bolts, screws, and studs are identified using a standard set forth by the Society of Automotive Engineers. Each bolt has a grade marking on the top of the bolt head as shown below.

Related Rules

5.11.1 Safety Belts
Solar cars must be equipped with a minimum of a three-point lap and shoulder belt. The use of safety belts is mandatory at any time the vehicle is moving. The belts must be attached securely to a structural component or main frame member of the solar car. The harness must be attached with bolts at least grade 8 and 3/8" in diameter.

Copyright (c) 1995-2024 Lehman Marks. All Rights Reserved. Solar Car Challenge, 3505 Cassidy Drive, Plano, TX 75023 Questions about the challenge? Contact Dr. Lehman Marks, Event Coordinator