Exhibit B 8ft Crossarm.pdf

This is a technical drilling guide document that provides specifications for drilling holes in REA (Railroad Equipment Association) crossarms. The guide establishes three nominal hole sizes (A, B, and C) with corresponding GO and NO GO gauge measurements to ensure proper fit and function. Hole A has a nominal size of 11/16 inches with acceptable GO/NO GO dimensions of 5/8 and 3/4 inches respectively; Hole B is nominally 7/16 inches (GO: 3/8, NO GO: 1/2); and Hole C is nominally 9/16 inches (GO: 1/2, NO GO: 5/8).

The document establishes critical manufacturing tolerances and drilling requirements for crossarm fabrication. Holes must be located within ±1/8 inch of specified positions, crossarm length must be within ±1/4 inch, and cross-section tolerances are specified at +1/8 inch and -0 inch at time of manufacture. All holes must be drilled on the centerlines of crossarm faces to ensure proper alignment. The guide includes detailed technical drawings illustrating different crossarm types and their dimensional specifications, with the notation that the scale is not to scale (N.T.S.), indicating that dimensions should be derived from the numerical specifications provided rather than from scaled measurements on the drawings.