Material

Washer: CR 410 Stainless Steel heat treated to HRC 38-42.
Ball: Type 440-C Stainless Steel to HRC 58-65.
Ball Tolerance: ±0.0025 (Grade 100)
Ball Retainer: HS Nylon permitting continuous use up to 120°C.

Other Info.

Inch sizes available, P.O.A.
Also available in Carbon Steel P.O.A.