MIL-DTL-19648E
4.4.3 Failures. One noncatastrophic failure is allowed for single submission inspection of table IV.
Two noncatastrophic failures are allowed for group submission. Noncatastrophic failures are as follows:
a. Dielectric withstanding voltage not less than 75 percent of initial rating.
b. Insulation resistance not less than 50 megohms.
c. Contact resistance or contact voltage drop not more than two times rated value.
d. Normal operate time within ± four times operate time tolerance or ±40 percent of normal operate
time, whichever is less.
Failures exceeding the above limits shall be cause for refusal to grant first article approval.
4.5 Inspection requirements for items not covered by specification sheets. Inspection requirements for
items not covered by specification sheets (see 3.2.1) shall be performed by the supplier, after award of
contract, and prior to production, at a laboratory acceptable to the Government (see 6.2.1). The
inspection shall be performed on sample units which have been produced with equipment and
procedures normally used in production. Unless otherwise specified (see 6.2.1), the samples and
inspection routine shall be as specified in 4.4.1, 4.4.2, and table IV. Approval of inspection requirements
for items not covered by specification sheets is valid only on the contract or purchase order under which
approval is granted, unless extended by the Government to other contracts or purchase orders.
4.6 Conformance inspection.
4.6.1 Inspection of product for delivery. Inspection of product for delivery shall consist of group A
inspection.
4.6.1.1 Inspection lot. An inspection lot shall consist of all relays covered by a single specification
sheet, 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 inspections specified in table V, in
conjunction with table VI, in the order shown.
TABLE V. Group A inspection.
Inspection
Requirement
Test method
Sampling plan
Paragraph
paragraph
Visual and mechanical examination
3.1, 3.4, 3.5,
4.7.1.1
See table VI
(external)
3.20, 3.22
Normal operate time
3.6.2
4.7.3.2
Release time (when specified)
3.6.4
4.7.3.4
See table VI
Recovery time (when specified)
3.6.5
4.7.3.5
Contact resistance or contact voltage drop
3.6.1
4.7.3.1
Seal 1/
3.7
4.7.4
Dielectric withstanding voltage
3.8
4.7.5
Insulation resistance
3.9
4.7.6
1/ Performed prior to final seal.
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