The Simpson Drop-In Internally Threaded Anchor in Type 316 Stainless Steel (DIA506SS) is a flush-mount expansion anchor engineered for use in solid concrete base materials. Designed for 1/2-in. threaded rod, this anchor delivers reliable, high-integrity connections in demanding applications where corrosion resistance is critical. The Type 316 stainless steel construction of both the anchor body and expander plug makes it well suited for environments where moisture or chemical exposure is a concern.

Key Features

• Flush-mount expansion anchor designed for concrete applications
• Internally threaded drop-in design for clean, flush installations in solid base materials
• Hand- and power-setting tools available for fast, easy and economical installation
• Fixed-depth stop bit helps you drill to the correct depth every time
• Minimum thread engagement should be equal to the nominal diameter of the threaded insert
• All components - anchor body, expander plug, and thread - are Type 316 stainless steel for uniform corrosion resistance
• Caution: Oversized holes will make it difficult to set the anchor and will reduce the anchor's load capacity

Specifications

• Manufacturer Part Number (MPN): DIA506SS
• Material: Type 316 Stainless Steel
• Finish: Type 316 Stainless Steel
• Rod/Bolt Diameter: 1/2 in.
• Length: 2 in.
• Thread Length: 3/4 in.
• TPI: 13
• Thread Type: UNC
• Drill Bit Diameter: 5/8 in.
• Anchor Body Material: Type 316 Stainless Steel
• Expander Plug Material: Type 316 Stainless Steel
• Packaging: Packs of 50 and Cartons of 200
• Country of Origin: Taiwan

Frequently Asked Questions

What size threaded rod is this anchor designed for?

This anchor is designed for use with 1/2-in. threaded rod. The minimum thread engagement should be equal to the nominal diameter of the threaded insert.

What drill bit diameter is required to install the DIA506SS?

A 5/8-in. drill bit is required for proper installation. Using an oversized hole will make it difficult to set the anchor and will reduce the anchor's load capacity.

Why is Type 316 stainless steel used for this anchor?

Type 316 stainless steel is used for all components - the anchor body, expander plug, and thread - to provide enhanced resistance to corrosion, making this anchor suitable for applications where exposure to moisture or harsh conditions is a concern.

What setting tools are compatible with this anchor?

Both hand-setting and power-setting tools are available for installation, offering fast, easy, and economical options. A fixed-depth stop bit is also available to help ensure the hole is drilled to the correct depth every time.

Note: Product dimensions may differ from picture. Please see item description for specifications.