Bolts with a cross or asterisk on the bolt head indicate which type of bolts?

Bolts with a cross or asterisk on the bolt head indicate which type of bolts?

• A. Aluminum Alloy
• B. Close Tolerance Bolts
• C. Standard Steel Bolts
• D. NAS Standard Aircraft Bolts

Answer: (C)

Bolts often carry head markings that tell you what kind of fastener you’re looking at. A simple cross or asterisk on the bolt head is used to identify a standard steel bolt—carbon steel with ordinary strength intended for general use. This marking helps you distinguish them from more specialized bolts that have different indicators: aluminum alloy bolts show marks tied to the alloy, close tolerance bolts are marked to reflect their precision class, and NAS standard aircraft bolts have aerospace-specific markings. So the cross or asterisk means it’s a standard steel bolt.

Bolts often carry head markings that tell you what kind of fastener you’re looking at. A simple cross or asterisk on the bolt head is used to identify a standard steel bolt—carbon steel with ordinary strength intended for general use. This marking helps you distinguish them from more specialized bolts that have different indicators: aluminum alloy bolts show marks tied to the alloy, close tolerance bolts are marked to reflect their precision class, and NAS standard aircraft bolts have aerospace-specific markings. So the cross or asterisk means it’s a standard steel bolt.