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ANGULARITY, PARALLELISM AND
PERPENDICULARITY The angularity (including parallelism and perpendicularity) tolerance is the total deviation between two planes within which the entire surface so toleranced must lie. The planes of deviation (tolerance zone) forms the basic angle to the datum plane. Tolerances are for draft free surfaces (see Draft standard). To establish planes see Flatness standard. PARALLELISM For surfaces in fixed relationship in the same mold section or member: Up to 3 in. length .020 Additonal length over 3 in. .002 in./in. For surfaces formed across the parting line: Up to 3 in. length .025 Additional length over 3 in. .0025 in./in. |
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St. Paul Brass and Aluminum Foundry is a
charter honoree of the Inc 5000:
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