Simpson Strong-Tie SAI500/99 99mm Width x 201mm Height Concealed Hanger SAI500/99/2 Pre-galv

Part Number: SAI500/99/2
Pack Size: 1 Unit

Heavy-Duty Concealed Hanger for Timber and Masonry Fixings

The Simpson Strong-Tie SAI500/99/2 is a high-strength concealed face-fix joist hanger designed for demanding structural applications. Built from 2mm pre-galvanised mild steel, it is suitable for timber-to-timber connections and can also be fixed into masonry using Rawl R-KF2 resin and M12 studs. Its depth and width suit multiple joist sizes, offering flexibility without compromising strength or compliance.

Key Features

• Heavy-duty concealed hanger ideal for structural timber applications

• Face-fix design with bolt holes for 12mm fasteners

• Can be fixed to timber or masonry substrates

• Suits multiple timber heights due to shared manufacturing blanks

• Manufactured from 2mm pre-galvanised steel for added durability

• Designed for concealed load transfer where aesthetics and support are critical

Benefits

• Provides clean, discreet support in exposed architectural timber installations

• Suitable for residential, commercial, or engineered timber systems

• Versatile usage reduces the need for multiple product types

• Quick to install and easy to align on site

• Helps prevent timber rotation when installed at correct depth

Dimensions

• Width (W): 99mm

• Height (H): 205mm

• Bearing Depth (B): 90mm

• Material Thickness: 2.0mm

Fixing Information

• Bolt holes compatible with 12mm fasteners

• For masonry: use Rawl R-KF2 resin and M12 studs

• Hanger depth should be ≥ 60% of carried member height, unless additional top restraint is provided

Material Specification

• Material: Pre-galvanised mild steel

• Finish: Zinc-coated for corrosion resistance

• Suitable for sheltered external and interior structural environments

Typical Applications

• Supporting joists and beams in timber structures

• Concealed timber-to-timber joints

• Masonry-to-timber connections using chemical fixings

• Engineered timber projects requiring heavy-duty hangers

Important Note

Ensure installation depth covers at least 60% of the joist height unless top lateral restraint is added. For masonry installations, follow manufacturer guidance on resin and stud specifications. Always comply with local building regulations and structural loading requirements. Not recommended for marine or high-exposure environments without additional protection.