
Drop-In (DIA) Internally Threaded Anchor

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Product Details
Drop-In anchors are internally threaded drop-in expansion anchors for use in flush-mount applications in solid base materials. Available in stainless steel (DIA) or short (DIAS) versions. Minimum thread engagement should be equal to the nominal diameter of the threaded insert.
Key Features
- Lipped edge (DIAS) eliminates need for precisely drilled hole depth
- 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
- Short length (DIAS) enables shallow embedment to help avoid drilling into rebar or pre-stressed/post-tensioned cables
- Short drop-in anchors include a setting tool compatible with the anchor to ensure consistent installation
Material
- Stainless steel and carbon steel
Finish
- Carbon steel; zinc plated
Installation
- Drill a hole in the base material using the appropriate diameter carbide drill bit as specified in the table. Drill the hole to the specified embedment depth plus 1/8" for flush mounting. Blow the hole clean using compressed air. Overhead installations need not be blown clean.
- Insert designated anchor into hole. Tap with hammer until flush against surface.
- Using the designated drop-in setting tool, drive expander plug toward the bottom of the anchor until shoulder of setting tool makes contact with the top of the anchor.
- Minimum thread engagement should be equal to the nominal diameter of the threaded insert.
Caution
- The load tables list values based upon results from the most recent testing and may not reflect those in current code reports. Where code jurisdictions apply, consult the current reports for applicable load values.
- Oversized holes will make it difficult to set the anchor and will reduce the anchor's load capacity.
Design Information and Load Tables
Related Links
- Anchoring Systems Technical and Installation Notes
- Anchor Designer Software® for Allowable Stress Design
- Type 300 Series Mechanical Anchors
Catalog Pages
Related Literature
Product Information Table
Model No. | Description | Coating/Material | Drill Bit Dia. (in.) | Length (in.) | Rod Dia. (in.) | Thread Length (in.) | TPI | Component Material, Anchor Body | Component Material, Expander Plug | Component Material, Thread | Box Qty. | Carton Qty. |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Footnotes
|
||||||||||||
DIA25SS | Drop-In Anchor | Type 303/304 Stainless Steel | 3/8 | 1 | 1/4 | 3/8 | 20 | AISI 303. Meets chemical requirements of ASTM A582 | AISI 303 | UNC | 100 | 500 |
DIA37SS | Drop-In Anchor | Type 303/304 Stainless Steel | 1/2 | 1 9/16 | 3/8 | 5/8 | 16 | AISI 303. Meets chemical requirements of ASTM A582 | AISI 303 | UNC | 50 | 250 |
DIA50SS | Drop-In Anchor | Type 303/304 Stainless Steel | 5/8 | 2 | 1/2 | 3/4 | 13 | AISI 303. Meets chemical requirements of ASTM A582 | AISI 303 | UNC | 50 | 200 |
DIA62SS | Drop-In Anchor | Type 303/304 Stainless Steel | 7/8 | 2 1/2 | 5/8 | 1 | 11 | AISI 303. Meets chemical requirements of ASTM A582 | AISI 303 | UNC | 25 | 100 |
DIA75SS | Drop-In Anchor | Type 303/304 Stainless Steel | 1 | 3 1/8 | 3/4 | 1 1/4 | 10 | AISI 303. Meets chemical requirements of ASTM A582 | AISI 303 | UNC | 20 | 80 |
DIA256SS | Drop-In Anchor | Type 316 Stainless Steel | 3/8 | 1 | 1/4 | 3/8 | 20 | Type 316 | Type 316 | UNC | 100 | 500 |
DIA376SS | Drop-In Anchor | Type 316 Stainless Steel | 1/2 | 1 9/16 | 3/8 | 5/8 | 16 | Type 316 | Type 316 | UNC | 50 | 250 |
DIA506SS | Drop-In Anchor | Type 316 Stainless Steel | 5/8 | 2 | 1/2 | 3/4 | 13 | Type 316 | Type 316 | UNC | 50 | 200 |
DIA37S | Short Drop-In Anchor | Zinc Plated / Carbon Steel | 1/2 | 3/4 | 3/8 | 1/4 | 16 | Meets minimum 70,000 psi tensile | Meets minimum 50,000 psi tensile | UNC/Coil-thread | 100 | 500 |
DIA50S | Short Drop-In Anchor | Zinc Plated / Carbon Steel | 5/8 | 1 | 1/2 | 5/16 | 13 | Meets minimum 70,000 psi tensile | Meets minimum 50,000 psi tensile | UNC/Coil-thread | 50 | 200 |
Product Information Tables
Rod Size (in.) | Type 303/304 Stainless Model No. | Type 316 Stainless Model No. | Drill Bit Dia. (in.) | Bolt Threads (per in.) | Body Length (in.) | Thread Length (in.) | Quantity | |
---|---|---|---|---|---|---|---|---|
Box | Carton | |||||||
1/4 | DIA25SS | DIA256SS | 3/8 | 20 | 1 | 3/8 | 100 | 500 |
3/8 | DIA37SS | DIA376SS | 1/2 | 16 | 1 9/16 | 5/8 | 50 | 250 |
1/2 | DIA50SS | DIA506SS | 5/8 | 13 | 2 | 3/4 | 50 | 200 |
5/8 | DIA62SS | — | 7/8 | 11 | 2 1/2 | 1 | 25 | 100 |
3/4 | DIA75SS | — | 1 | 10 | 3 1/8 | 1 1/4 | 20 | 80 |
Rod Size (in.) | Model No. | Drill Bit Diameter (in.) | Bolt Threads (per in.) | Body Length (in.) | Thread Length (in.) | Quantity | |
---|---|---|---|---|---|---|---|
Box | Carton | ||||||
3/8 | DIA37S1 | 1/2 | 16 | 3/4 | 1/4 | 100 | 500 |
1/2 | DIA50S1 | 5/8 | 13 | 1 | 5/16 | 50 | 200 |
|
Rod Size (in.) | Carbon Steel Model No. | Drill Bit Diameter (in.) | Bolt Threads (per in.) | Body Length (in.) | Thread Length (in.) | Quantity | |
---|---|---|---|---|---|---|---|
Box | Carton | ||||||
1/2 | DIA50C1 | 5/8 | 6 | 2 | 3/4 | 50 | 200 |
3/4 | DIA75C1 | 1 | 5 | 3 1/8 | 1 1/4 | 20 | 80 |
|
Anchor Component | Component Material | ||
---|---|---|---|
Zinc Plated Carbon Steel | Type 303/304 Stainless Steel | Type 316 Stainless Steel | |
Anchor Body | Meets minimum 70,000 psi tensile | AISI 303. Meets chemical requirements of ASTM A582 | Type 316 |
Expander Plug | Meets minimum 50,000 psi tensile | AISI 303 | Type 316 |
Thread | UNC/Coil-thread | UNC | UNC |
Note: DIA37S, DIA50C and DIA75C are not available in stainless steel. |
Code Reports & Compliance
Drawings
DWG | DXF | RFA | IFC | SAT | |||
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