Association of American Railroads
Material Specifications: M-307-34 TO M-601-38.
M-307-34. Wrought Iron-Blooms and Forgings.
M-401-37. Brake Shoes.
M-402-39. Malleable Iron Castings.
M-403-40. Wheels Cast Iron, For Locomotives, Tenders and Cars.
M-404-34. Unions and Pipe Fittings 300-lb. Pressure.
M-501-38. Bearings, Journal, Lined.
M-502-32. Bearings, Journal, Relined.
M-503-34. Bearings, Bronze, for Locomotives.
M-601-38. Hose, Air-Brake and Train Air-Signal.
M-601-38. Hose, Air-Brake and Train Air-Signal.
Association of American Railroads
Material Specification: M-307-34.
Wrought Iron-Blooms and Forgings.
Association of American Railroads
Material Specifications M-401-37.
Brake Shoes.
Association of American Railroads
Material Specifications M-402-39.
Malleable Iron Castings.
Association of American Railroads
Material Specifications M-403-40.
Wheels Cast Iron, For Locomotives, Tenders and Cars.
Association of American Railroads
Material Specifications M-404-34.
Unions and Pipe Fittings 300-lb. Pressure.
Association of American Railroads
Material Specifications M-501-38.
Bearings, Journal, Lined.
Association of American Railroads
Material Specifications M-502-32.
Bearings, Journal, Relined.
Association of American Railroads
Material Specifications M-503-34.
Bearings, Bronze, for Locomotives.
Association of American Railroads
Material Specifications M-601-38.
Hose, Air-Brake and Train Air-Signal.
