Hardware
Post Hardware
Simpson Strong-Tie
$5-$25 eachPost Caps for Structural Beam-to-Post Connections
Post caps are structural metal connectors that join beams to post tops, creating a secure code-compliant connection. They wrap over the post and provide nailing flanges to attach beams, transferring vertical, uplift, and lateral loads through the connection.
Key Features
- Connects beams to post tops securely
- Published uplift and lateral load values
- Galvanized or ZMAX coated
- Adjustable and fixed styles
- Fits 4x4 and 6x6 posts
Specifications
Material: Galvanized steel (G90 or ZMAX) | Post sizes: 4x4
4x6
6x6 | Beam sizes: Double 2x
4x
6x beams | Models: AC
BC
CC
PC series | Fasteners: 10d nails
1/2in bolts
or SD screws
Best For
Deck beam-to-post connections
Pergola beam support
Carport and pavilion framing
Porch beam connections
Compatible Materials
4x4 and 6x6 posts
Double 2x beams
Solid timber beams
Pressure-treated lumber
Glulam beams
Pros & Cons
Pros
- ✓ Engineered load capacity
- ✓ Prevents beam from sliding off post
- ✓ Provides uplift resistance
- ✓ Easy nail or bolt installation
Cons
- ✗ Visible hardware on structure
- ✗ Must match post and beam dimensions
- ✗ Through-bolted styles need both-side access
Installation Tips
Place cap on post top, secure with nails or bolts through side flanges. Set beam into cap and fasten upper flanges. Verify cap fully supports beam with no gaps.
Frequently Asked Questions
Yes, they provide a cleaner engineered alternative. Notching weakens the post. Post caps maintain full cross-section with published load values.
A post cap sized for 6x6 post accepting 3-inch wide beam. Simpson BC or AC series available in this configuration.