The Simpson HCP4Z HCP 18-Gauge ZMAX Galvanized Hip Corner Plate for 4x is an engineered structural connector built specifically for hip roof framing. Designed by Simpson Strong-Tie, this hip corner plate secures a rafter or joist to double top plates at a 45 deg. angle, delivering reliable resistance to both uplift and download forces at one of the most structurally demanding points on a roof. Fabricated from 18-gauge steel with a ZMAX galvanized finish, it meets the quality standards relied on by engineers and contractors for residential and light-commercial roof construction.

Key Features

• Attaches HCP to double top plates - creates a solid, code-compatible connection at the hip rafter junction, reducing the need for custom framing solutions
• Birdsmouth not required for table uplift loads - simplifies rafter preparation and saves labor time on uplift-rated installations, though a birdsmouth may still be required for download applications
• Rafter may be sloped to 45 deg. - accommodates a range of common hip roof pitches without requiring additional hardware or special cuts
• Made from 18-gauge steel - provides the structural strength needed for load-bearing roof hip connections while keeping the connector lightweight and easy to handle
• ZMAX galvanization offers extra corrosion resistance for exterior and treated-wood applications - makes this connector a dependable choice where standard galvanization may fall short, including pressure-treated lumber framing

Why This Product

• Engineered for the hip of a roof - unlike general-purpose framing connectors, this plate is purpose-built for the 45 deg. angle connection between a hip rafter or joist and double top plates, giving builders a proven solution for a structurally critical location
• Dual-force resistance in one connector - by handling both uplift and download forces, this corner plate addresses the full range of loading conditions at a hip roof connection, supporting structural integrity through varied weather and load events
• ZMAX coating extends service life - the enhanced galvanized finish goes beyond standard zinc coating to protect against corrosion in exterior environments and alongside treated lumber, reducing the risk of premature connector degradation
• Trusted Simpson Strong-Tie engineering - as a genuine Simpson Strong-Tie connector, the HCP4Z is tested to perform and manufactured to the quality standards that engineers and contractors specify on professional framing projects

Specifications

• Model Number: HCP4Z
• Member Size: 4x
• Gauge: 18
• Coating/Finish: ZMAX
• Install With: (8) 0.148 in. x 3 in. nails to the rafters and (8) 0.148 in. x 3 in. nails to the plate
• Country of Origin: United States

Frequently Asked Questions

Where is the HCP4Z used on a roof?

Hip corner plates are designed for use on the hip of a roof. The HCP4Z connects a rafter or joist to double top plates at a 45 deg. angle.

What forces does the HCP4Z resist?

The HCP4Z provides resistance to both uplift and download forces, making it suitable for structurally demanding roof hip connections.

Is a birdsmouth cut required when installing the HCP4Z?

A birdsmouth is not required for table uplift loads but may be required for download applications. The rafter may be sloped to 45 deg..

Why choose ZMAX galvanization for this connector?

ZMAX galvanization offers extra corrosion resistance, making the HCP4Z well suited for exterior and treated-wood applications where standard galvanization may not provide sufficient protection.

Related Products

• Nails 0.148 x 3"

Note: Product dimensions and/or Screw or Bolt holes may differ from picture.