Spider Anchoring Solutions Cast in Place Concrete Insert

SKU # SX-MD, SX-MD-LP, SX-WF, SX-WF-LP

Spider is our cast-in-place concrete insert, designed for fast, secure anchoring into metal deck and wood-form slabs. Installed before the pour, it creates a reliable fixing point for suspending MEP services—eliminating the need for post-install drilling or hot works.

Safe Working Load:

Safe Working Load::

Up to 3,000 lbs (Dependent on variant)

Available Sizes

Available Sizes:

Rod sizes 3/8-3/4 and No.2 - No.5 Cable Push-In Toggles

Forms

Forms:

Wood and Metal

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Cast-in-Place Concrete Inserts

 

Spider Cast-in-Place Concrete Inserts simplify anchor installation by creating a strong, threaded fixing point before the pour. No drilling or hot works needed. Available in versions for both metal deck and woodform slabs, Spider ensures clean, fast, and safe installs across a range of projects.

Ideal for suspending pipework, ductwork, and cable tray, Spider offers high load performance and is fully compatible with our seismic-rated Push-In Toggle Adapters for bracing and rigid suspension.

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Pre-Pour Installation

Pre-Pour Installation

Eliminates the need for post-pour drilling, saving time and reducing labor on site.

High Load Capacity

High Load Capacity

Engineered to deliver strong, secure fixings for a wide range of suspended services.

Substrate Variants

Substrate Variants

Available for both metal deck and wood form to suit different site conditions.

Safer to Install

Safer to Install

Reduced tools required, improving jobsite safety and reducing disruption.

Secure Fixing

Secure Fixing

Creates a stable, anchor embedded in concrete for long-term performance.

Seismic Compatibility

Seismic Compatibility

When used with our Push-In Toggle Adapters, Spider meets seismic requirements.

Pre-Pour Installation

Pre-Pour Installation

Eliminates the need for post-pour drilling, saving time and reducing labor on site.

High Load Capacity

High Load Capacity

Engineered to deliver strong, secure fixings for a wide range of suspended services.

Substrate Variants

Substrate Variants

Available for both metal deck and wood form to suit different site conditions.

Safer to Install

Safer to Install

Reduced tools required, improving jobsite safety and reducing disruption.

Secure Fixing

Secure Fixing

Creates a stable, anchor embedded in concrete for long-term performance.

Seismic Compatibility

Seismic Compatibility

When used with our Push-In Toggle Adapters, Spider meets seismic requirements.

How it Works:

Spider Inserts are available in either wood form or metal deck variants, see how it works for metal deck below or download the technical data pack for wood install guidance.

Download the Metal Form Technical Data Pack Here
Step 1: Drill a 1" diameter hole in the metal deck where the insert is needed.
Step 2: Push the Spider Insert through the hole until it’s seated correctly.
Step 3: Secure the insert to the deck using to ensure stability during the pour.
Step 4: Pour the concrete and allow it to fully cure to the required minimum compressive strength.
Step 5: Once cured, the Spider Insert is ready to accept the Spider Cable Push-In Toggle or Spider Rod Push-In Toggle for fast and secure suspension.

The Spider Range

Our Spider cast-in-place concrete inserts are available in 4 variants for wood form or metal deck. See load ratings here, or download the technical data packs for full product specifications.

Spider Variant Safe Working Load
Spider Wood Form up to 3000 lbs
Spider Wood Form Low Profile up to 1700 lbs
Spider Metal Deck up to 1700 lbs
Spider Metal Deck Low Profile up to 1000 lbs

Featured Products

Spider Metal Deck Anchor

Cast in Place Concrete Insert

Safe Working Load: up to 1,700 lbs
Available Sizes: Rod sizes 3/8-3/4, and No.2-No.5 Toggle Kits
Forms: Metal

Spider Wood Form Anchor

Cast in Place Wood Form Concrete Insert

Safe Working Load: up to 3,000 lbs
Available Sizes: Rod sizes 3/8-3/4, and No.2-No.5 Toggle Kits
Forms: Wood

Trusted by the Experts

“The versatility (of Spider) with all the different attachments was one of the key things to this job. The toggle attachments mean we can use it with threaded rod, or switch back to cable. It makes it really versatile. I’ve been in the industry 27 years and this is definitely a game changer.”

Ryan Eder | Plumbing Superintendent – US Engineering

Watch the Full Case Study

Frequently Asked Questions

Yes. Screwed-in toggles are installed below deck quickly, dramatically reducing below-deck labor and assembly time.

Only Gripple’s own Swivel Cable Toggles, Threaded Rod Adapters, or Seismic Push-In Adapters are certified for use with the insert. Use with third-party products voids warranty.

Do not load the insert until the concrete has fully cured to its specified compressive strength.

Minimum concrete thickness and slab geometry must meet specifications based on ACI‑318 guidelines — for example, at least 4 in thicker slabs with proper edge distance and reinforcement. Separate guidelines apply for metal deck and wood form.

Yes. It’s ICC‑ES ESR‑4190 certified, UL‑listed per UL 2239, and UL 2043 for plenum use. Also, LARR approved by the Los Angeles Dept. of Building & Safety.

Yes, the system includes a Seismic Push-In Toggle Adapter variant rated for seismic restraint connections.

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