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6.4 First article inspection. Invitations for bids should provide that the Government reserves the right to
waive the requirement for samples for first article inspections as 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.
6.5 Tin whisker growth. The use of alloys with tin content greater than 97 percent, by mass, may
exhibit tin whisker growth problems after manufacture. Tin whiskers may occur anytime from a day to
years after manufacture and can develop under typical operating conditions, on products that use such
materials. Conformal coatings applied over top of a whisker-prone surface will not prevent the formation
of tin whiskers. Alloys of 3 percent lead, by mass, have shown to inhibit the growth of tin whiskers. For
additional information on this matter, refer to ASTM-B545 (Standard Specification for Electrodeposited
Coatings of Tin).
6.6 Subject term (key word) listing.
Burn-in
Electron tube
First article
Operational safety
Stray field
6.7 Environmentally preferable materials. Environmentally preferable materials should be used to the
maximum extent possible to meet the requirements of this specification. Table VII lists the Environmental
Protection Agency's (EPA) top seventeen hazardous materials targeted for major usage reduction. Use of
these materials should be minimized or eliminated unless needed to meet the requirements specified
herein (see section 3).
TABLE VII. EPA top seventeen hazardous materials.
Benzene
Dichloromethane
Tetrachloroethylene
Cadmium and Compounds
Lead and Compounds
Toluene
Carbon Tetrachloride
Mercury and Compounds
1,1,1 - Trichoroethane
Chloroform
Methyl Ethyl Ketone
Trichloroethylene
Chromium and Compounds
Methyl Isobutyl Ketone
Xylenes
Cyanide and Compounds
Nickel and Compounds
6.8 Changes from previous issue. Marginal notations are not used in this revision to identify changes
with respect to the previous issue due to the extent of the changes.
Custodians:
Army - CR
Preparing activity:
Navy - OS
DLA - CC
DLA - CC
(Project 5855-2006-001)
NOTE: The activities listed above were interested in this document as of the date of this document.
Since organizations and responsibilities can change, you should verify the currency of the information
above using the ASSIST Online database at http://assist.daps.dla.mil.
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