MIL-DTL-46540C(AR)
TABLE III. Conformance inspection
Examination or Test
Conformance
Requirement
Inspection
Defect
Criteria
Paragraph
Method
Classification
Sample Acc/Rej
Examination for defects
Table IV
0/1
3.2/3.8
Table IV
Table IV
Head rim thickness, maximum
100%
see 1/
3.3
4.4.1
Major
Hardness
5
see 2/
3.4
4.4.2
Major
Residual stress
25
0/1
3.5
4.4.3
Major
Neutrality
10
0/1
3.6
4.4.4
Major
Function and Casualty 3/
400
Table V
3.7
4.4.5
Table V
Notes:
1/ A cartridge case that fails to comply with the head rim thickness requirement shall be rejected.
2/ If two or more units of the sample fail to comply with the hardness requirement, the lot shall be
rejected. If one unit of the sample fails to comply with the requirement, a second sample of 10 cartridge
cases shall be randomly selected from the lot and tested. The lot shall be rejected if a total of two or more
cartridge cases of the combined first and second samples fail to comply. Failure is defined as any
individual hardness number obtained that does not comply with the drawing hardness pattern position
requirement.
3/ The lot shall be rejected if any malfunction or casualty occurs in number equal to or greater than the
applicable "Rej" number. If malfunctions or casualties occur in excess of the applicable "Acc" number,
but less than the applicable "Rej" number, a second sample of 800 cartridges randomly selected from the
lot shall be tested. The lot shall be rejected if in the combined samples malfunctions or casualties occur in
number equal to or greater than the applicable "Rej" number.
TABLE IV. Examination for defects
Cartridge Case, Dwg. 7553815
Conformance
Requirement
Inspection
Classification
Examination or Test
Method 1/, 2/
Criteria
Paragraph
Critical
1
Split or perforated case
100%
3.2
AAIE
Major
101
Metal defective
Level IV
3.2
Visual
102
Flash hole missing or obstructed
Level IV
3.2
Visual
103
Corrosion
Level IV
3.8
Visual
104
Oil or grease
Level IV
3.8
Visual
105
Head configuration
Level IV
3.2
Visual
106
Thickness, head rim, min
Level IV
3.2
Gage
107
Perpendicularity case head with datum surface
Level IV
3.2
Gage
108
Chamfer, head rim, missing
Level IV
3.2
Visual
109
Length of flat on head rim, min
Level IV
3.2
Gage
110
Diameter of head, min
Level IV
3.2
Gage
111
Diameter, primer pocket
Level IV
3.2
Gage
112
Depth, primer pocket
Level IV
3.2
Gage
113
Runout, primer pocket with datum surface
Level IV
3.2
Gage
114
Diameter, extractor groove, max
Level IV
3.2
Gage
115
Width, extractor groove, min
Level IV
3.2
Gage
5
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