FF-P-110 Padlock, Changeable Combination \(Resistant To Opening By Manipulation And Surreptitious Attack\)This specification covers changeable combination padlocks designed to conform to the standards for security equipment as set forth in the "National Security Council Directive Governing the Classification, Downgrading, Declassification and Safeguarding of National Security Information". The padlocks are required to resist opening by manipulation and surreptitious techniques for the period of time specified. The padlocks are intended for use as indicated in 6.1. The padlocks are not tested for forced opening.

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FF-P-110J

4.6.3.3 Radiographic test. The class 1 padlock shall be tested under the following conditions to

determine resistance to opening by radiographic techniques. Portable x-ray equipment, excluding

the use of isotopes, may be used. Weight of the equipment shall not exceed 75 lbs (33.96 kg).

Any radiation shielding provided for the padlock will be included in the test. The padlock shall be

radiographed and resulting radiographs shall not permit opening of the padlock within the time

specified in 3.9.

4.6.3.4 Direct tension test. The body of the padlock shall be held in a metal strap bearing against

the outer surface of the case with a slot permitting the shackle to pass through and engage in a

suitable hook or eye. A tension force of 500 lbs (226.8 kg) shall be applied slowly along the

vertical centerline of the padlock so as to put a direct and equal tension in each shank of the lock

shackle. The applied tension shall not damage the lock or its locking mechanism or permit

opening by manipulation within the time specified in 3.8.

4.6.3.5 Jar test with tension. With a coil spring compressed between the shackle and the lock

case cover to produce a force of approximately 60 lbs (27.2 kg), the padlock shall be tested as

specified in 4.6.3.6. The applied force shall not release the shackle nor permit opening by

manipulation within the time specified in 3.8.

4.6.3.6 Jar test without tension. The padlock shall be fastened to a filing cabinet as specified in

4.6.3. The lock case shall be held loosely with one hand and the padlock shall be struck with a

substantial blow, the hold on the padlock being released immediately before the blow, so as to jar

the padlock forcibly against the cabinet. This procedure shall be performed not less than six times

by striking the padlock from different directions. A wood, plastic, or lead mallet weighing not

more than 12 ounces (340 grams) shall be used to deliver the blows. Such jarring blows shall not

release the shackle nor permit opening by manipulation within the time specified in 3.8.

4.6.3.7 Padlock shackle test. The padlock shall be held firmly in a vise or other suitable device

and sufficient tension force shall be applied between the lock shackle and the lock case until the

shackle is broken or released from its case. The damage to the lock and shackle shall be to the

extent specified in 3.5.

4.6.3.8 Drop test. At least two sample padlocks shall be dropped 6 feet (152 mm) to a concrete

floor at least 10 times. The impacts shall not damage the lock or its locking mechanism nor

permit opening by manipulation within the time specified in 3.8.

4.6.3.9 High temperature operation. Subject the padlock to 150 �F (66 �C) until the temperature

throughout the padlock has stabilized (five minutes minimum). Perform all functions required of

the padlock (lock, unlock) three times while retaining this temperature. The padlock shall

perform normally as specified throughout section 3 of this specification while at this temperature

(see 3.2).

4.6.3.10 Low temperature operation. Subject the padlock to -40 �F (-40 �C) until the

temperature throughout the padlock has stabilized (five minutes minimum). Perform all functions

required of the padlock (lock, unlock) three times while retaining the -40 �F (-40 �C) temperature.