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AIA/NAS NAS 4003 Document Information:
Title
Fastner, A286 Corrosion Resistant Alloy Externally Threaded, 160 KSI Ftu, 95 KSI Fsu, 1000 Degree F
Aerospace Industries Association of America Inc.
Publication Date:
Jan 6, 2003
Scope:
This specification defines the requirements for corrosion
resistant steel externally threaded fasteners procured under part
numbers listed on drawings which refer to this specification.
Typically, these fasteners are used for tension, shear, and
tension-fatigue applications where 160 KSI Ftu and 95 KSI Fsu is
desired with a service temperature capability to 1,000ºF
unplated.
Requirements stipulated in purchase contracts, purchase orders,
part standards and/or part drawings shall take precedence over
requirements stated herein. Receiving contractors may reject any
lot which does not conform.
The specification includes mechanical property requirements for
three classes of fasteners, Types I, II and III, and three classes
of thread lengths Long Thread, Mid thread and Short Thread.
Type I - Tension head (hex, double hex, etc.) without a recess
drive (i.e. NAS6703-6720)
Type II - 100º Full flush head, long or short thread (i.e.
NAS1580C)
Pan head. long or short thread (i.e. NAS1578C)
Fillister head, long or short thread (i.e. NAS1121E-1128E)
Full thread (threaded to the head) (i.e. NAS1802)
Type III - 100º Reduceti flush head, long or short thread (i.e.
NAS1581C)
Workmanship of fasteners shall be in conformance with aircraft
fastener manufacturing processes.
Recommendations for improvements or corrections to this
specification should be directed to an NASG representative of a
using company or to the Executive Secretary of the National
Aerospace Standards Committee.
Specifications listed herein, of the issue in effect on date of
inquiry, are a part of this specification to the extent indicated.
In the case of conflict, the requirements herein shall take
precedence.
Should a using company require qualification testing for any
product specifying this document, a report for the specific product
and product diameter shall be generated by the product manufacturer
from product of sufficient shank and thread lenqth to yield
inspection and test data for all requirements in TABLE I including
tests categorized as not mandatory. Inspection and test data shall
be generated in accordance with the prescribed test methods,
utilizing the sampling plan specified for a twentyfive (25) piece
manufacturing lot and submitted by the product manufacturer to the
product user.
Unless otheiwise specified, part inventory manufactured to
previous revisions of the applicable drawing or specification may
be procured and used until stock is depleted.
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