MIL-DTL-23971D
4.3 Materials inspection. Materials inspection shall consist of certification supported by verifying data that the
materials listed in table I, used in fabricating the items are in accordance with applicable referenced specifications or
requirements prior to such fabrication.
TABLE I. Materials inspection.
Material
Requirement
Applicable specification
paragraph
Aluminum
ASTM-B221, ASTM-B241/B241M, SAE-AMS-
QQ-A-200, SAE-AMS-QQ-A-250, ASTM-B209
Copper alloy
ASTM-B121/B121M, ASTM-B36/B36M,
ASTM-B16/B16M, ASTM-B124/B124M
Steel bar, shapes, and forgings
SAE-AMS-QQ-S-763, ASTM-A484/A484M,
ASTM-A582/A582M
Steel sheets and strips
ASTM-A240/A240M, ASTM-A666,
ASTM-A693
Iron nickel alloy (KOVAR)
SAE-AMS-I-23011, SAE-AMS-QQ-N-290
Gold
MIL-DTL-45204, SAE-AMS2422, ASTM-B488
Plastics
Best manufacturing practice
3.3.2
Rubber
3.3.3
MIL-PRF-23586
4.4 Inspection conditions. Unless otherwise specified herein, all inspections shall be performed in accordance with
the test conditions specified in the "GENERAL REQUIREMENTS" of MIL-STD-202.
4.5 First article inspection. First article inspection shall be performed by the contractor, after award of the contract
and prior to production, at a location acceptable to the Government. First article inspection shall be performed on
sample units which have been produced with equipment and procedures normally used in production. First article
approval is valid only on the contract under which it is granted unless extended by the Government to other contracts
(see 6.3).
4.5.1 Sample size. Four samples shall be subjected to first article inspection.
4.5.2 Inspection routine. The samples shall be subjected to the inspections specified in table II in the order shown.
All sample units shall be subjected to the inspection of group I. The sample shall be divided into 2 groups of 2 units
each as specified in table II for groups II and III.
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