MIL-PRF-22E
TABLE V. Qualification inspection for locking bushing models. 1/
Requirement
Method
Number of
Number of failures
Examination or test
Paragraph
Paragraph
samples
allowed 2/
Group I 3/
Visual and mechanical examination 4/
Dielectric withstanding voltage
4.7.2 to 4.7.2.2
4
0
DC resistance
4.7.3 to 4.7.3.2
Torque
4.7.4 to 4.7.4.3
Low temperature exposure
Group II
Rotational load life
Terminal strength
4
1
Shock (specified pulse)
1/
This inspection is applicable only to four additional locking bushing type resistors when submitted with the same
style of standard bushing type resistors..
2/
Failure of a resistor in one or more tests of a group shall be charged as a single defective.
3/
Nondestructive examination and tests.
4/
Marking shall be considered defective only if marking is illegible.
4.6 Conformance inspection.
4.6.1 Inspection of product for delivery. Inspection of packaging shall consist of groups A and B.
4.6.1.1 Inspection lot. An inspection lot, as far as practicable, shall consist of all resistors of the same style
produced in a period not to exceed 30 days, produced under essentially the same conditions, and offered for
inspection at one time.
4.6.1.2 Group A inspection. Group A inspection shall consist of the examination and tests specified in table VI and
shall be made on the same set of sample units, in the order shown.
TABLE VI. Group A inspection.
Requirement
Method
Sampling
Inspection
paragraph
paragraph
plan
DC resistance
Visual and mechanical examination
Material
Overall body and mounting dimensions
Other physical dimensions
4.6.1.2.1
Shaft dimensions
3.4.3 to 3.4.3.3
Mechanical rotation
Marking 1/
Workmanship
1/ Marking defects shall be charged only for illegible, incomplete, or incorrect marking. Incorrect
marking defects shall be charged only to examination for style and type of marking. Incorrect
electrical off position, resistance, and resistance marking shall be determined by and shall be
charged to the dc resistance test (4.7.3 to 4.7.3.2, inclusive).
4.6.1.2.1 Sampling plan. A sample of parts from each inspection lot shall be randomly selected in accordance with
table VII. If one or more defects are found, the lot shall be screened and defectives removed. After screening and
removal of defectives a new sample of parts shall be randomly selected in accordance with table VII. If one or more
defects are found in this second sample, the lot shall be rejected and shall not be supplied to this specification.
Resistance values in the sample shall be representative, and where possible, in proportion to the resistance in the
inspection lot.
9
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business