HP 925354-001 HDD bracket is a notebook spare part for mounting a hard drive. HP identifies this exact part number as a hard drive bracket, so it provides the mounting hardware associated with the drive bay rather than the storage drive itself.
The service guide lists the bracket separately from the 2.5-inch SATA hard drive and notes that the hard drive kit does not include it. This distinction is useful when replacing or assembling the storage components: the drive and its bracket are separate parts. The item is identified as an HP notebook bracket; the cited information does not specify its dimensions or included fasteners.