Single sampling plans for normal inspection (Table II-A)

Rows are code letters with their sample sizes; columns are AQLs. Each cell gives Ac and Re. Scroll sideways to see all 26 AQLs.

Code letterSample size	Acceptable quality levels (normal inspection)
Code letterSample size	0.010Ac Re	0.015Ac Re	0.025Ac Re	0.040Ac Re	0.065Ac Re	0.10Ac Re	0.15Ac Re	0.25Ac Re	0.40Ac Re	0.65Ac Re	1.0Ac Re	1.5Ac Re	2.5Ac Re	4.0Ac Re	6.5Ac Re	10Ac Re	15Ac Re	25Ac Re	40Ac Re	65Ac Re	100Ac Re	150Ac Re	250Ac Re	400Ac Re	650Ac Re	1000Ac Re
A2	↓	↓	↓	↓	↓	↓	↓	↓	↓	↓	↓	↓	↓	↓	0 1	↓	↓	1 2	2 3	3 4	5 6	7 8	10 11	14 15	21 22	30 31
B3	↓	↓	↓	↓	↓	↓	↓	↓	↓	↓	↓	↓	↓	0 1	↑	↓	1 2	2 3	3 4	5 6	7 8	10 11	14 15	21 22	30 31	44 45
C5	↓	↓	↓	↓	↓	↓	↓	↓	↓	↓	↓	↓	0 1	↑	↓	1 2	2 3	3 4	5 6	7 8	10 11	14 15	21 22	30 31	44 45	↑
D8	↓	↓	↓	↓	↓	↓	↓	↓	↓	↓	↓	0 1	↑	↓	1 2	2 3	3 4	5 6	7 8	10 11	14 15	21 22	30 31	44 45	↑	↑
E13	↓	↓	↓	↓	↓	↓	↓	↓	↓	↓	0 1	↑	↓	1 2	2 3	3 4	5 6	7 8	10 11	14 15	21 22	30 31	44 45	↑	↑	↑
F20	↓	↓	↓	↓	↓	↓	↓	↓	↓	0 1	↑	↓	1 2	2 3	3 4	5 6	7 8	10 11	14 15	21 22	↑	↑	↑	↑	↑	↑
G32	↓	↓	↓	↓	↓	↓	↓	↓	0 1	↑	↓	1 2	2 3	3 4	5 6	7 8	10 11	14 15	21 22	↑	↑	↑	↑	↑	↑	↑
H50	↓	↓	↓	↓	↓	↓	↓	0 1	↑	↓	1 2	2 3	3 4	5 6	7 8	10 11	14 15	21 22	↑	↑	↑	↑	↑	↑	↑	↑
J80	↓	↓	↓	↓	↓	↓	0 1	↑	↓	1 2	2 3	3 4	5 6	7 8	10 11	14 15	21 22	↑	↑	↑	↑	↑	↑	↑	↑	↑
K125	↓	↓	↓	↓	↓	0 1	↑	↓	1 2	2 3	3 4	5 6	7 8	10 11	14 15	21 22	↑	↑	↑	↑	↑	↑	↑	↑	↑	↑
L200	↓	↓	↓	↓	0 1	↑	↓	1 2	2 3	3 4	5 6	7 8	10 11	14 15	21 22	↑	↑	↑	↑	↑	↑	↑	↑	↑	↑	↑
M315	↓	↓	↓	0 1	↑	↓	1 2	2 3	3 4	5 6	7 8	10 11	14 15	21 22	↑	↑	↑	↑	↑	↑	↑	↑	↑	↑	↑	↑
N500	↓	↓	0 1	↑	↓	1 2	2 3	3 4	5 6	7 8	10 11	14 15	21 22	↑	↑	↑	↑	↑	↑	↑	↑	↑	↑	↑	↑	↑
P800	↓	0 1	↑	↓	1 2	2 3	3 4	5 6	7 8	10 11	14 15	21 22	↑	↑	↑	↑	↑	↑	↑	↑	↑	↑	↑	↑	↑	↑
Q1,250	0 1	↑	↓	1 2	2 3	3 4	5 6	7 8	10 11	14 15	21 22	↑	↑	↑	↑	↑	↑	↑	↑	↑	↑	↑	↑	↑	↑	↑
R2,000	↑	↑	1 2	2 3	3 4	5 6	7 8	10 11	14 15	21 22	↑	↑	↑	↑	↑	↑	↑	↑	↑	↑	↑	↑	↑	↑	↑	↑

↓use the first sampling plan below the arrow
↑use the first sampling plan above the arrow
Ac = acceptance number
Re = rejection number

If the sample size equals or exceeds the lot or batch size, do 100 percent inspection.

AQLs of 10 or less may be read as percent defective or as defects per hundred units; AQLs above 10 are defects per hundred units only (MIL-STD-105E, 4.4.3).

Sample size code letters (Table I) · AQL sampling calculator

Source and limits

Values on this site are transcribed from MIL-STD-105E, Sampling Procedures and Tables for Inspection by Attributes (U.S. Department of Defense, 10 May 1989), Tables I and II-A. Every cell was read from the page scans and then compared by script with a second, separately keyed copy of the tables.

This is a reference tool. It covers single sampling under normal inspection only — not tightened or reduced inspection, and not double or multiple sampling. It has not been compared cell by cell with the current paid editions of ANSI/ASQ Z1.4 or ISO 2859-1. The standard named in your contract or purchase order, in the edition it names, is what governs.