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|  MIL-W-50504A (AR)
4.4.3 Testing. Inspection lots shall meet the requirements of
the tests called out in the Quality Conformance Inspection tables.
4.4.4 Inspection equipment. The inspection equipment required
to perform the examinations and tests prescribed herein is described
in the "paragraph Reference/Inspection Method" column in the tables
starting with paragraph 4.4.2.1; parenthetic numbers refer to the
equipment lists cited on ET 8889406. The contractor shall submit
for approval inspection equipment designs in accordance with the
terms of the contract. See Section 6 of MIL-A-48078 and 6.3
herein. The contractor shall submit all inspection equipment
designs to the government for evaluation and approval prior to
fabrication of such equipment.
4.5 Methods of inspection.
4.5.1 Materials, components, and processes. Compliance with
all requirements of Section 3 of this specification shall be
ascertained by current and continuing examination of inspection and
test data to determine that all components (parts, subassemblies,
and materials) have been inspected and tested and found to comply
with their respective drawing and specification requirements, and
that all specified manufacturing processes have been followed.
4.5.2 Hardness test. After final heat treatment, the hardness
test shall be performed on the nose (forward of the bourrelet) and
on the center of the base. Procedures for these tests are as
prescribed by FED-STD-151, Method 242.1. If any ductile iron
specimen is outside the hardness limits, the lot shall be rejected.
4.5.3 Tension test on nose. Tension test shall be performed on
specimen as prescribed in FED-STD-151, Method 211.1. If test
specimen is visibly defective, another specimen will be tested from
the same heat treat lot. Failure of one or more tension test
specimens to comply with the physical requirements of the applicable
drawing shall be cause for rejection of the batch represented by the
specimen.
4.5.4 Tension test on base. From the samples provided, one
tensile test specimen conforming to a Standard "R" type specimen as
prescribed by FED-STD-151 shall be taken from the bottom of each
base. The criteria for determining yield strength and elongation
shall be as prescribed by FED-STD-151, Method 211.1. Failure of any
specimen to comply with the applicable drawing shall be cause for
rejection of the batch represented by the specimen.
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