C7000-6-4 Flat Steel Spring Nut Black Phosphate (Pack Qty 5 000) BC-210139

PICTURES ARE REPRESENTATIVE OF ITEM BUT ARE NOT OF THE ACTUAL ITEM. Product dimensions finish head markings thread length stamping shape or forging shape etc. may differ from picture. Products are guaranteed to meet the specifications to which they are manufactured. Specifications allow for tolerances in dimension and shape which can vary from lot to lot. It reduces inventories by eliminating need for lockwashers and spanners. Its single thread engagement design makes it easy to apply and remove. Parts are reusable. Provides the correct amount of spring tension without damaging enamel glass or porcelain surfaces. SAE 1050 or higher carbon steel with the exception of part# C105SS-440-4 which is made of stainless steel. For material thickness 0.017-0.024 in. Rockwell 30N C40 minimum C50 maximum. For material thickness 0.025-0.039 in. Rockwell 45N C40 minimum C50 maximum.