FF-P-110J
3.3 Materials. Materials used shall be free from defects which would adversely affect the
performance or maintainability of individual components or of the overall assembly. Materials not
specified herein shall be of the same quality used for the intended purpose in commercial practice.
Unless otherwise specified herein, all equipment, material, and articles incorporated in the work
covered by this specification are to be new and fabricated using materials produced from
recovered materials to the maximum extent possible without jeopardizing the intended use. The
term "recovered materials" means materials which have been collected or recovered from solid
waste and reprocessed to become a source of raw materials, as opposed to virgin raw materials.
Unless otherwise specified, none of the above shall be interpreted to mean that the use of used or
rebuilt products is allowed under this specification.
3.3.1 Material of components. Unless otherwise specified, the padlock case, cover, and internal
parts subject to wear, with the exception of the locking bolt and combination wheels, shall be of
steel, brass, bronze, zinc alloy, or other suitable material provided the finished product withstands
the tests in section 4. Combination wheels may be of any suitable material provided the finished
product withstands the tests which are applicable to the class. Shackles shall be of case hardened
steel or stainless steel. Zinc alloy for parts shall conform to ASTM B86. All materials shall resist
the effects of ambient heat such as an oven or similar means to a maximum temperature of 300 °F
(149 °C) for a duration of five minutes, minimum. The performance specified throughout section
3 of this specification shall not be impaired or modified by the heat.
3.4 Design. The design of the padlock mechanism shall preclude the changing of the combination
without knowledge of the existing combination settings. Placing the shackle in the locked
position shall disperse or scramble the combination to an indeterminable position. The lock
mechanism shall not permit the shackle to be locked out in the open position. The locking bolt
shall be guarded by not less than three combination wheels and a driving wheel or cam. It shall
not be possible to determine the combination when the padlock is in the open position without
knowledge of the existing combination. The shackle shall not spring out to the open position
when the padlock is unlocked, but shall be required to be pulled to the open position. The term
"shackle" as used herein includes a "U" shaped shackle that passes through the locking hole of the
mating halves of hasps or hasp staple. The shape of the padlock shall be at the option of the
contractor, provided the assembled padlock conforms to all requirements specified herein.
3.4.1 Available combinations. The combination wheels for the padlocks shall be capable of
affording at least 30,000 different, independent, usable combinations. The dialing tolerance for
opening the lock shall be not more than 1/4-dial division, or number, from either side of any true
dialing setting.
3.5 Construction. The padlock shall be positive in its movements and functions, and the
arrangement and fit of parts shall be such that it shall not be possible to insert a probing or
shimming device into any opening in the case that would results in opening the padlock. The
padlock shall be finished and assembled in such a manner that when in the locked condition, any
penetration or spreading attempt, or the prying out or removal of component parts, including the
combination dial, pushbuttons, or the back cover or any part of the lock's case shall permanently
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