This listing is for a new lot of 175, model 95462A09 Med. Strength Steel Hex Nut Grade 5, Zinc-plated, 1/4"-20 Thread.

From the Manufacturer:
Material Zinc-Plated Steel
Fastener Strength Grade/Class Grade 5
Thread Size 1/4"-20
Thread Type UNC
Thread Spacing Coarse
Thread Fit Class 2B
Thread Direction Right Hand
Width 7/16"
Height 7/32"
Drive Style External Hex
Nut Type Hex
Hex Nut Profile Standard
System of Measurement Inch
RoHS Compliant
These nuts are suitable for fastening most machinery and equipment.

Zinc-plated steel nuts resist corrosion in wet environments.