87A

87A is an alphanumeric designation used in a variety of unrelated systems. There is no single, universal meaning for 87A; its significance depends on the domain and issuing body.

In transportation, codes that combine numbers and a trailing letter are commonly used to differentiate routes, services, or equipment. A designation such as 87A may indicate a specific branch, variant, or service within a rail network, bus system, or metro operation, but the exact meaning varies by agency.

In manufacturing and electronics, 87A often appears as part of a model number, part number, or revision code. It can denote a family of components or a performance tier, again with the precise interpretation defined by the manufacturer or standard.

In government, administration, and standards contexts, 87A can be used as a form code, classification, or catalog index. The code's interpretation depends on the issuing authority and the document or specification it appears in.

In culture and media, alphanumeric sequences such as 87A may be used as catalog identifiers, episode numbers, or fictional designations within a universe. When encountered, the surrounding material usually clarifies its meaning.