SAMPLING AND INSPECTION BY ATTRIBUTES METHOD:MIL STD 105D/ ABC-STD 105

Category of Inspection

FRI
Final Random Inspection

DUPRO
During Production
Inspection

Sample Size Level

Normal - IIof shipment quantity AQL max

Reduced - I
Of already
produced
units AQL max

Lot size

1.0

1.5

2.5

4.0

6.5

1.0

1.5

2.5

4.0

51 - 90

*13
+0

8
0

20
1

13
1

13
2

13
0

8
0

5
0

3
0

91 - 150

13
0

32
1

20
1

20
2

20
3

13
0

8
0

5
0

13
1

151 - 280

50
1

32
1

32
2

32
3

32
5

13
0

8
0

20
1

13
1

281 - 500

50
1

50
2

50
3

50
5

50
7

13
1

32
1

20
1

20
2

501 - 1200

80
2

80
3

80
5

80
7

80
10

50
1

32
1

32
2

32
3

1201 - 3200

125
3

125
5

125
7

125
10

125
14

50
1

50
2

50
3

50
5

3201 - 10000

200
5

200
7

200
10

200
14

200
21

80
2

80
3

80
5

80
7

10001 - 35000

315
7

315
10

315
14

315
21

200
21

125
3

125
5

125
7

125
10

35001 - 150000

500
10

500
14

500
21

315
21

200
21

200
5

200
7

200
10

200
14

150001 - 500000

800
14

800
21

500
21

315
21

200
21

315
7

315
10

315
14

315
21

500001 + more

1250
21

800
21

500
21

315
21

200
21

500
10

500
14

500
21

500
21

AQL max" = " Acceptable Quality Level" i.e.maximum number of defective samples.
* = Sample size + = AQL number.


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