U.S. Code of Federal Regulations

Regulations most recently checked for updates: Jun 07, 2023

§ 51.2285 - Tolerances for size.

(a) All percentages shall be calculated on the basis of weight.

(b) In order to allow for variations incident to proper sizing and handling, tolerances shall be permitted for the respective size classifications as indicated in Table III:

Table III


Size classification Tolerances for size
Smaller than three-fourths halves Will not pass through 24/64 inch round hole Pass through 24/64 inch round hole Pass through 16/64 inch round hole Pass through 8/64 inch round hole
Halves51 (included in 5 percent)
Pieces and halves 1183 (included in 18 percent)1 (included in 2 percent).
Pieces255 (included in 25 percent)1 (included in 5 percent).
Small pieces 2102.

1 No part of any tolerance shall be used to reduce the percentage of halves required or specified in a lot of “pieces and halves”.

2 The tolerances of 10 percent and 2 percent for “small pieces” classification shall apply, respectively, to any smaller maximum or any larger minimum sizes specified.