MIL-PRF-3420H
TABLE IV. Examination of end item for defects in general construction.
EXAMINATION
DEFECT
Roll or package sheets
Loss of coating or impregnation causing bald
spots.
Coating or impregnation completely missing.
Granular sandpaper surface.
Assembly of sheets
Not evenly and uniformly stacked; sheet
containing manufacturer's sealing conditions not
visible upon opening. Adjacent sheets stick
together to the extent that separation causes
tearing or injury to any surface.
Assembly of roll
Not restrained to prevent unwinding.
Material not wound uniformly on roll causing
soft or uneven edges, or telescoping of roll.
Unwinding of roll (check both
When unwound, material sticks together to the
sides)
extent that unrolling causes tearing or injury to
any surface.
Material wound unevenly causing wrinkles,
sharp creases, or folds within roll.
TABLE V. Examination of the end item for dimensional defects.
EXAMINATION
DEFECT
Sheets
Length and Width
Varies by more than plus 1/4 or minus 1/8 inch
from dimensions specified.
Rolls:
Width
Varies by more than plus 1/4 inch or minus 1/8
inch from the dimensions specified.
Less than 200 yards.
Length
Utility rolls:
Varies by more than plus 1/4 inch or minus 1/8
Width
inch from the dimensions specified.
Less than 10 yards or greater than 10 1/6 yards.
Length
Identification markings
Lettering is less than 1/8 inch high. More than 2
inches between groups of markings. Less than
one group of markings in each 10 inches of
width.
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