ANSI BHMA A156-6:2001 pdf download.AMERICAN NATIONAL STANDARD FOR ARCHITECTURAL DOOR TRIM
3.5 Finish: Finishes shall conform to the finish test values in this Standard for all applicable products.Appearance and test procedures shall conform to ANSI/BHMA A156.18- 2000 for Materials and Finishes. All visible parts when the product is installed shall match subject to the limitations stated under the product category and to natural variations of those finishes falling into B or C categories (See ANSI/BHMA A156.18). The finish of exposed screw and bolt heads shall be compatible with that of the product subject to these variations. Fasteners not exposed shall have a corrosion resistant finish.
3.6 Packaging: All products together with necessary screws and other fasteners shall be wrapped or packaged individually unless otherwise specified by the manufacturer. The package shall be labeled or marked to clearly indicate contents.
3.7 Symbols: The symbol CTC used throughout this Standard means center to center. All other symbols are defined as they are used.
4.3.3 Screw holes shall be spaced equidistant 8 in. (203 mm) maximum CTC, along a centerline not over 1/2 in. (12.7 mm) in from the edge all around the plate. The end screws shall also be a maximum of4 in. (102 mm) from the corers.
4.3.4 Attachment screws shall be furnished with the plate. The standard screw is stainless steel no. 6 Phillips head, type AB tapping 5/8 in. (16 mm) minimum length with finish compatible with that of the plate.Screws furnished with plastic plates of a color other than black or chocolate brown have a natural stainless color. (seeA-1.1 andA- 1.2)
4.3.5 Polishing lines or dominant direction of any surface pattern shall run across the door (width of plate).Users of this Standard wishing wood grained plastic plates with grain running in the same direction as the grain in the door shall so specify.
4.3.6 Beveled edges are optional on metal plates and standard on other materials 1/8 in. (3.2 mm) thick or thicker. They shall be uniformly beveled leaving no sharp edges. Bevel the top and two sides of metal plates (symbol B3E) and all sides of other materials (symbol B4E). Edges on metal plates shall be deburred.Exception: For combination plates,bevel top and two sides of part A and two sides of part B (See Figure 1).
5.3.3 Polishing lines shall run up and down the door (height of edging). Users of this Standard wishing wood grained plastic plates with grain running in the same direction as the grain in the door shall so specify.
5.3.4 Attachment screws shall be furnished with the edging. The standard screw is stainless steel no. 6 Phillips flat head type AB tapping 5/8 in. (16 mm) minimum length.ANSI BHMA A156-6 pdf download.