Spare part

As description implies, these Capital Parts are typically expensive and are depreciated over time.

(an example of inspection spares would be bearings and mechanical seals, large bolts and nuts.)

In an industrial setting, operational spares would be gages, valves (solenoid, MOVs that are in redundancy), transmitters, I/O boards, small AC/DC power supplies, etc.)

(for a car, it would windshield wiper) In logistics, spare parts can be broadly classified into two groups, repairables and consumables.

Rather than bear the cost of completely replacing a finished product, repairables typically are designed to enable more affordable maintenance by being more modular.

[2] There is no UK or EU legislation which states that spare parts have to be available for any set period of time,[3] but some trade associations require their members to ensure products are not rendered useless because spare parts are not available.

[4] The 'six year rule' in the UK Sale of Goods Act 1979 relates to the time period for enforcing claims that goods were defective when sold, not to whether spare parts are available to repair them, and section 23(3) of the Consumer Rights Act 2015 states that a consumer cannot require a trader to repair or replace goods if "the repair or replacement is impossible", implying that if spare parts are no longer available the consumer's Right to Repair (or to have a spare part supplied) would be lost.

[5] From the perspective of logistics, a model of the life cycle of parts in a supply chain can be developed.

The source system is usually crippled as a result, if only temporarily, in order to allow the recipient device to function properly again.

The resulting complex systems have evolved modular support infrastructures, with the reliance on auto parts in the automotive industry, and replaceable computer modules known as field-replaceable units (FRUs).

This makes it relatively straightforward to repair complex military hardware, at the expense of having a ready supply of spare parts.

In recent years, the United States Department of Defense (DoD) has advocated the use of performance-based logistics (PBL) contracts to manage costs for support of weapon systems.