Key Slot Standards
NAAMS Global Standard Components for Assembly and Stamping are produced and maintained through collaboration efforts between Chrysler LLC., Ford Motor Company, General Motors Company, and their respective suppliers. They describe and define approved components utilized to design and manufacture Stamping Dies and Tooling to produce or join various sheet metal products as part of the vehicle body, assembly production process. This effort began under sponsorship of the Auto/Steel Partnership in 1992, and was transferred to the United States Council for Automotive Research (USCAR) in 2010. For additional information on USCAR, refer to the following web site: http://www.uscar.org
Nominal key size b × h Applied shaft diameter d Key size Keyway size; b h c or r Standard size of b1 and b2 b1 tolerance (H8) b2 tolerance (F7) r1 and r2 t1 t2; Standard size Tolerance(p7) Standard size Tolerance (h9) Standard size Tolerance Standard size Tolerance; 4×4: 10 or more and 13 or below: 4 +0.024 +0.012: 4. Additionally, SOLIDWORKS supports the standard methods for dimensioning slots when they are created by using these tools. ASME Y14.5M-1994 paragraph 1.8.10 and figure 1-35 provide three methods for the dimensioning of slots, with no stipulation regarding which is preferred for particular scenarios. Standard Keyway Dimensions. STANDARD KEYSEAT DIMENSIONS.
The initial publication for Stamping components occurred in January 1995, followed by the Assembly components in 1996. In 1997, both became available on the World Wide Web to address documentation control initiatives with expansion, revisions, and accelerated use. To access the standard drawing database at no cost, select the appropriate box below for Assembly or Stamping.