In Excel Alt+H uses for-

♦ most frequently used shortcuts in Excel:
• Go to the Home tab: Alt+H
• Close a workbook: Ctrl+W
• Open a workbook: Ctrl+O
• Save a workbook: Ctrl+S
• Save a workbook: Ctrl+S
• Copy selection: Ctrl+C
• Paste selection: Ctrl+V
• Undo recent action: Ctrl+Z
• Remove cell contents: Delete
• Choose a fill color: Alt+H, H
• Cut selection: Ctrl+X
• Go to the Insert tab: Alt+N
• Apply bold formatting: Ctrl+B
• Center align cell contents: Alt+H, A, C
• Go to the Page Layout tab: Alt+P
• Go to the Data tab: Alt+A
• Go to the View tab: Alt+W
• Open the context menu: Shift+F10 or Windows Menu key:
• Add borders: Alt+H, B
• Delete column: Alt+H, D, C
• Go to the Formula tab: Alt+M
• Hide the selected rows: Ctrl+9
• Hide the selected columns: Ctrl+0

Source: Microsoft support [Link]