[Code of Federal Regulations] [Title 7, Volume 7] [Revised as of January 1, 2002] From the U.S. Government Printing Office via GPO Access [CITE: 7CFR801.8] [Page 596] TITLE 7--AGRICULTURE CHAPTER VIII--GRAIN INSPECTION, PACKERS AND STOCKYARD ADMINISTRATION (FEDERAL GRAIN INSPECTION SERVICE), DEPARTMENT OF AGRICULTURE PART 801--OFFICIAL PERFORMANCE REQUIREMENTS FOR GRAIN INSPECTION EQUIPMENT--Table of Contents Sec. 801.8 Tolerances for sieves. The maintenance tolerances for sieves used in performing official inspection services shall be: (a) Thickness of metal: 0.0015 inch. (b) Accuracy of perforation: 0.001 inch from design specification. (c) Sieving accuracy: ------------------------------------------------------------------------ Tolerance Sieve description ------------------------------------- Direct comparison Sample exchange ------------------------------------------------------------------------ .064 x \3/8\ inch oblong.......... 0.2 0.3 percent, mean percent, mean deviation from deviation from standard sieve standard sieve using wheat. using wheat \5/64\ x \3/4\ inch slotted....... 0.3 0.5 percent, mean percent, mean deviation from deviation from standard sieve standard sieve using barley. using barley 5\5/64\ x \3/4\ inch slotted...... 0.5 0.7 percent, mean percent, mean deviation from deviation from standard sieve standard sieve using barley. using barley \6/64\ x \3/4\ inch slotted....... 0.7 1.0 percent, mean percent, mean deviation from deviation from standard sieve standard sieve using barley. using barley ------------------------------------------------------------------------