General Purpose Metric Tapered and Reduced Cross Section Retaining Rings-Type 3DM1-Heavy duty ExternalRings, Type 3EM1-Reinforced E" Rings, Type 3FM21-8C Type Rings
STANDARD published on 1978
Designation standards: ASME B27.8M:1978(R2005)
Publication date standards: 1978
Approximate weight : 300 g (0.66 lbs)
Country: American technical standard
Category: Technical standards ASME
Reaffirmed: 2005