MIL-STD-105E

Lot or batch size

Special Inspection Levels

General Inspection Levels

S-1

S-2

S-3

S-4

I

II

III

2 ~ 8
9 ~ 15
16 ~ 25
26 ~ 50
51 ~ 90
91 ~ 150
151 ~ 280
281 ~ 500
501 ~ 1200
1201 ~ 3200
3201 ~ 10000
10001 ~ 35000
35001 ~ 150000
150001 ~ 500000
500001 and over

A
A
A
A
B
B
B
B
C
C
C
C
D
D
D

A
A
A
B
B
B
C
C
C
D
D
D
E
E
E

A
A
B
B
C
C
D
D
E
E
F
F
G
G
H

A
A
B
C
C
D
E
E
F
G
G
H
J
J
K

A
A
B
C
C
D
E
F
G
H
J
K
L
M
N

A
B
C
D
E
F
G
H
J
K
L
M
N
P
Q

B
C
D
E
F
G
H
J
K
L
M
N
P
Q
R