FF-P-2827A
4.6.3.4 Key hardness test. Padlock cylinder key blanks shall be tested for
hardness in accordance with ASTM E18. Key material shall have a hardness not less
than 75 on the Rockwell B scale. Key material that does not meet this standard
shall constitute a failure.
4.6.3.5 Key deformation resistance test. Take the key blank cut as specified
in 3.2.1. Clamp the key in a vise and attach an 8-inch (203 mm) lever to the key
blank bow in such a manner that it will not separate from the bow under the torque
load to be applied in this test procedure. Mark the position of the end of the
lever opposite the bow on a fixed, immovable surface. Apply a torque force of not
less than 8 lbf-inch (0.9 Nm) to the key blank bow for not less than 1 minute.
Release the torque load and mark the position of the end of the lever opposite the
bow. A difference of more than 0.125 inch (3.18 mm) after torque unloading shall
constitute a failure.
4.6.3.6 Operating key function test. Operate a padlock through 10 cycles of
the steps specified in 4.6.3.3. The cyclic procedure shall be modified so that each
time the padlock is unlocked, an attempt to withdraw the key from the padlock shall
be effected. Failure of the padlock to unlock, lock or the release of the operating
key when the padlock is open, shall constitute a failure. If the keyway cover or
plate (where applicable) does not remain aligned with the keyway, it shall also
constitute a failure.
5.
PACKAGING
5.1 Packaging requirements. The preservation, packing, and marking shall be
as specified in the contract or order.
6. NOTES
(This section contains information of a general or explanatory nature that
may be helpful, but is not mandatory.)
6.1 Intended use. This specification covers two sizes of key operated
padlocks to be used in general field service applications. Padlocks contained
within this specification are not intended for use where high security is
required. The padlock is to be used where the elements are the primary threat to
reliable operations.
6.2 Acquisition requirements. Acquisition documents should specify the
following:
a. Title, number, and date of this specification
b. PIN of unit(s) required (see 1.2.2)
c. Issue of DODISS to be cited in the solicitation, and if required, the
specific issue of individual documents referenced (see 2.1.1, 2.2)
d. Bid samples required and instructions for disposition, if different
(see 3.2.1)
e. Key requirements, if different (see 3.2.1 and 3.2.2)
f. When a first article is required for inspection and approval, and the
number of units required and instructions for disposition, if different
(see 3.2.2 and 4.4.1)
g. Keying requirements (see 3.5.3.2 and 3.5.3.2.8)
h. When master keys are required (see 3.5.3.2.7)
6.2.1 Sampling procedures.
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