The Simpson 3/8 in. Horizontal Wood Rod Hanger is a one-piece threaded anchor system from Simpson engineered to suspend threaded rod from the side of joists, columns, and overhead wood members. Designed specifically for horizontal installation, it serves as a reliable attachment point for pipe hanging, fire protection, electrical conduit, and cable-tray applications - all without the need for predrilling, so crews can drive directly into wood and keep work moving.

Key Features

• No predrilling required - drives directly into wood members, reducing installation steps and saving time on the job.
• Type-17 point - provides fast starts so the anchor seats quickly and accurately without slipping or wandering.
• Custom-matched nut driver compatibility (model RND62, sold separately) - sets the anchor to its optimal depth every time, delivering consistent, repeatable results across a run of hangers.
• Horizontal installation orientation - purpose-built for side-of-joist and side-of-column applications where vertical hangers are not suitable.
• Compatible with 3/8 in. threaded rod at 16 threads per inch - matches the most common rod size used in pipe, conduit, and cable-tray suspension systems.
• Zinc-plated carbon steel construction - provides corrosion resistance appropriate for dry, interior, non-corrosive environments while maintaining structural integrity under load.
• One-piece fastening system - eliminates loose components and simplifies handling, reducing the chance of lost parts during installation.

Why This Product

• Faster installation without pilot holes - the Type-17 point and no-predrill design mean fewer tools and fewer steps per hanger, which adds up to meaningful time savings across large conduit, sprinkler, or cable-tray installations.
• Precision depth control with the right accessory - pairing this anchor with the Simpson RND62 nut driver eliminates guesswork and helps ensure every anchor is driven to the same optimal depth for consistent holding performance.
• Versatile fit for common mechanical and electrical support work - approved for pipe hanging, fire protection systems, electrical conduit support, and cable-tray applications, making it a practical stock item for contractors working across multiple trades.
• Engineered for a specific job, not a general one - the horizontal-only design, defined rod thread compatibility, and matched tooling reflect a purpose-built product rather than a compromise, giving installers confidence the hanger will perform as intended in side-mount wood applications.

Specifications

• Manufacturer: Simpson Strong-Tie
• MPN: RWH37212
• Material: Carbon Steel
• Coating / Finish: Zinc Plated
• Anchor Diameter: 5/16 in.
• Anchor Length: 2-1/2 in.
• Rod Diameter / Thread: 3/8 in. - 16 threads per inch
• Installation Orientation: Horizontal
• Point Type: Type-17
• Packaging: Packs of 25 and Cartons of 250

Approved Applications

• Pipe hanging systems
• Fire protection systems
• Electrical conduit support
• Cable-tray applications
• Suspension of threaded rod from the side of joists, columns, and overhead wood members

Frequently Asked Questions

Does this rod hanger require predrilling before installation?

No predrilling is required. The Type-17 point on the RWH37212 is specifically designed to provide fast starts and drive directly into wood members without the need for a pilot hole.

What size threaded rod is this hanger compatible with?

The RWH37212 is designed for use with 3/8 in. threaded rod with 16 threads per inch (3/8 - 16 thread pattern).

What tool is needed to install this anchor to the correct depth?

Simpson Strong-Tie offers a custom-matched nut driver, model RND62 (sold separately), that sets the anchor to its optimal installation depth for consistent and reliable results.

Is this rod hanger suitable for outdoor or corrosive environments?

No. The RWH37212 is recommended for use in dry, interior, non-corrosive environments only. Its zinc-plated carbon steel construction is not intended for exposure to moisture, chemicals, or corrosive conditions.

Note: Product dimensions and/or thread length may differ from picture. Please see the item description above for specifications.