10-32 Hex Nut with External Tooth, LW Zinc, 100/Pack - KEPFI-100-100T

1/4-20 Serrated Flange Hex Lock Nuts Case Hardened HR15N 78/90 Black Oxide. Hex head screws are designed to be driven by a wrench or pneumatic tools.

Jam Nuts provide durable low profile fasteners that are normally half the height of a standard nut, and are tightened against the work surface and used in situations where a standard nut would not fit. A jam nut can also be used with a hex nut to prevent it from loosening.

3/4-10 Nylon Insert Hex Locknut Grade 8 Zinc Yellow. Hex head screws are designed to be driven by a wrench or pneumatic tools.

75-3473 is comprised of: M8 x 25.00mm Button Head Socket Cap Screw (BHSCS) M8 Hex Nut 8.51mm ID Washer

Lock nuts remain stiff when placed on bolts. They are useful in applications where vibration may cause a fastener to come loose. Lock nuts are also able to be used to keep other nuts in place by threading over them.