WW-L-2887, FEDERAL SPECIFICATION: TUBE, PHENOLIC, POROUS RETAINER FOR USE IN INSTRUMENT BEARINGS (20-JUL-1998)

WW-L-2887, FEDERAL SPECIFICATION: TUBE, PHENOLIC, POROUS RETAINER FOR USE IN INSTRUMENT BEARINGS (20-JUL-1998)., This specification covers basic characteristics required for porous laminated phenolic materials intended for use as instrument and thin section ball bearing retainers (cages), and methods of determining these characteristics.