Related Clues:
- The White House's is 20500
- Go with haste
- Five-digit postal number, informally
- ___ + 4
- Do (up), as a fly
- Number after many a state postal abbr.
- USPS acronym
- Close, as a parka
- Nothing ... or a hint to what's hidden in 20-, 35- and 52-Across
- Energy or clothes fastener
- ___ drive
- Type of fastener
- Fasten (eg jacket)
- Toothed fastener
- Nothin' at all