I'm not a metallurgist to test, but, for 316 stainless they are well priced.
Have not installed them, but, anticipate they will do the job correctly.
Pity they do not sell the acorn nuts to suit.
Cheers,
rebells1
Laptop Battery for TOSHIBA PA3817U-1BRS, PA3818U-1BRS, PABAS227, PABAS228 L750 A