What property of nylon makes it particularly dangerous to use?

The property of nylon that makes it particularly dangerous to use is its ability to stretch. Nylon is a synthetic polyamide known for its strength and elasticity, which allows it to stretch significantly under tension. While this elasticity can be beneficial in many applications, it also poses risks in situations where sudden loads or stresses are applied, such as in climbing, anchoring, or towing scenarios. If nylon stretches excessively, it can lead to unexpected slack in a line, potentially causing accidents, slips, or equipment failure when the tension suddenly changes.

The other characteristics mentioned don't present the same level of risk. For example, while nylon can be slippery, making it difficult to grip, this is not as critical as the dangers associated with its stretching nature. Similarly, its weight is generally considered manageable and does not contribute to safety concerns in the same way. Lastly, while nylon can fray under certain conditions, this property is more related to wear and tear than to the immediate dangers posed during its use. Therefore, the stretching property of nylon is a primary reason for concern in certain marine and outdoor applications.