3. SALIENT CHARACTERISTICS
3.1 Description. Padlocks supplied under this commercial item description shall conform with the requirements of this document and all specified requirements of ASTM F883 (Standard Performance Specification for Padlocks) Type PO 1 (grade and options as indicated herein). In the event that the requirements of this document should conflict with ASTM F883, this document shall take precedence. Military Standards MS21313 and MS35647 are specified in which case, the requirements of this document and the cited Military Standard are applicable except that in the event that that the requirements of this document should conflict with the cited Military Standard, the Military Standard shall take precedence. Unless otherwise specified all padlocks shall be in accordance with ASTM F883 option A (captive key). This document shall be considered the procurement document for MS21313 and MS35647 in lieu of MIL-P-17802.
3.2 Case. Shall be laminated or solid, at the supplier’s option of materials indicated for the type padlock unless otherwise specified. If hardened steel case is specified, the case shall be uniformly case hardened steel with a hardness in the range of 40 to 50 on the Rockwell C scale (40-50 HRC) and shall meet the minimum desired grade requirements as specified for Forcing Tests, ASTM F883 (see 4.5)
3.3 Shackle. The shackle shall be “U” shaped and may be either spring released or pull released. The diameter of the shackle shall be as specified in MS21313 or MS35647. When case hardened steel shackles are specified, the grade requirements as specified for Forcing Tests of ASTM F883 (see 4.5). The inside height shall be as specified and in accordance with Military Standards MS21313 or MS5647.
3.4 Keying. Each padlock shall be furnished with two keys. Padlocks supplied in a group as a set be keyed alike, keyed individually, master keyed or grand master keyed, as specified. (Master keyed means that the master key shall open all padlocks in a group, but shall not open locks of another group within a set of groups. Grand master keyed means that the grand master key shall open all padlocks within all groups making up the set). Three additional keys that will open each lock in the set shall be furnished with each set. All keys shall be captive (unremovable) in the cylinder when unlocked unless otherwise specified. When individually keyed padlocks are specified, no key shall operate more than 1 padlock per 50 padlocks (see 4.5). Unless otherwise specified, padlocks conforming with this commercial item description shall have a cylinder which will accept keys made from key blanks available on the national domestic retail market. The supplier shall identify domestic retail sources for such key blanks upon request.
3.5 Chain. Padlocks shall be supplied with chains as specified in MS21313 or MS35647.
3.6 Mechanism. The padlock mechanism shall conform to the following requirements:
a. Shall be of the key operated type. The mechanism itself shall be bras in a brass shell inserted in the case, except when the case is of solid brass, the shell is not required.
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