MIL-DTL-29606A
specific instructions in acquisition documents regarding arrangements for examinations,
approval of first article test results and disposition of first articles. Invitations for bids should
provide that the Government reserves the right to waive the requirement for samples for first
article inspection to those bidders offering a product which has been previously acquired or
tested by the Government, and that bidders offering such products, who wish to rely on such
production or test, must furnish evidence with the bid that prior Government approval is
presently appropriate for the pending contract.
6.4 Conductor cross-sectional area. The conductor cross-sectional area is expressed as a
Circular Mill Area (CMA) value. One circular mill is equal to the area of a circle with a
diameter of .001 inch (1 mil). The nominal CMA was determined by calculating the CMA of a
single strand and multiplying it by the number of strands in the conductor. The minimum
CMAs were determined by different methods depending on the wire size. For sizes 8 and larger,
the minimum strand size from the ASTM for the strand was determined and the minimum strand
CMA calculated. The minimum strand CMA was multiplied by the number of strands
excluding allowable missing strands, to obtain the minimum CMA of the stranded conductor.
The values for sizes 10 and smaller were set lower than that required by the ASTM minimum
strand size and higher than that required by the maximum conductor resistance requirements.
Other factors considered included military specification insulated wire weight and conductor
diameter requirements. The K-values needed to calculate the CMAs from the stranded
conductor weights were calculated by the Naval Air Warfare Center Aircraft Division,
Indianapolis, based on the conductor stranding requirements, including length of lay, in this
specification.
6.5 Definitions.
6.5.1 Concentric lay. Concentric lay is defined as a central strand surrounded by one or
more layers of helically wound strands.
6.5.2 Lot. All the stranded conductors of one part number made under the same essential
conditions, produced on a substantially continuous basis, and offered for inspection at one time
are considered a lot for purposes of sampling.
6.5.3 Sample. The sample is the group of sample units selected from the lot for the
purpose of inspection.
6.5.4 Sample unit. The sample unit consists of a single piece of finished conductor of
sufficient length to permit all applicable examinations and tests. Not more than one sample unit
for each group of tests should be taken from a single unit of product.
6.5.5 Unit of product. A unit is one continuous length of conductor.
15
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business