ZZ-T-001237, INTERIM FEDERAL SPECIFICATION, TREAD, STAIR, FLEXIBLE AND SEMI-RIGID TYPE RUBBER AND VINYL (25 MAR 1970)

ZZ-T-001237, INTERIM FEDERAL SPECIFICATION, TREAD, STAIR, FLEXIBLE AND SEMI-RIGID TYPE RUBBER AND VINYL (25 MAR 1970)., This specification covers the requirements for flexible and semi-rigid stair trends, rubber and vinyl.