MIL-M-45424D (MU)
4.3.5 Dimensional control of cast or molded parts.-
To qualify a new or reworked cavity for use in production,
a sample of at least three (3) parts from each cavity
shall be fully inspected dimensionally. Individual cavity
identification must be provided for each mold. As a control
of each cavity during production, the above quantity of parts
from each cavity shall be inspected for at least the defects
listed In paragraphs 4.3.5.1 through 4.3.5.3 after continuous
production of each 5,000 parts or at the end of each week,
whichever occurs first. If any defective parts are found
during qualification of the cavity, the cavity producing the
defective part will not be used in production. If any
defective parts are found when inspection is performed for
the control of the cavity, the cavity producing the defective
part shall be removed from production. Further, that portion
of production since the last control check shall be returned
to the contractor for inspection for each separate type of
defect according to MIL-STD-105, using an AQL of 0.40 percent
for each major defect and an AQL of 0.65 percent for each
minor defect. All molds removed from production because of
some fault, may after reworking, be returned to production
provided they pass the qualification test above. The contractor
may request a change of inspection frequency provided he presents
objective evidence to the contracting officer to substantiate the
request. The following subparagraphs identify those items and
the minimum inspections subject to the requirements of this
paragraph. A defect classification of Minor is assigned to all
defects listed herein.
The following subparagraphs Identify those items and
the minimum inspections subject to the requirements of this
paragraph.
4.3.5.1 Case (see dwg. 8800915)
Defects
Code No.
Method of
Inspection
Marking minleading or unidentifiable . . . . Visual
1
.
01010
Radius of mating lip edge incorrect . . . Visual
2
.
01011
Radii and fillets incorrect . . . . . . . . . Visual
3
.
01012
Height of mating liup above
4
.
peripheral band . . . . . . . . . . . . . . Gage
01013
Outside corner radius (4) of lip . . . . . . . Gage
5.
01014
Thickness of front face in area of
6.
four (4) corners . . . . . . . . . . . . . Gage
01015
Thickness of walls, 4 sides . . . . . . . . . . Gage
01016
7.
Thickness of 4 eyepiece stiffener
8.
webs . . . . . . . . . . . . . . . . . . . . . . . . . Gage
01017
01018
Theickness of 2 knife-edge sections . . . . . Gage
9.
11