Description
Overview
GRK Fasteners Caliburn Concrete Screw (57774) is designed for anchoring and fastening applications in concrete and similar substrates, where high pullout strength and corrosion resistance are required.
| MPN | 57774 |
|---|---|
| Brand | GRK Fasteners |
| Manufacturer | ITW Brands |
| Size | 19/64″ x 2-3/4″ (0.29″ x 2.75″) |
| Weight (Package) | 0.69 lb |
| Package Quantity | 25 pieces |
| Coating | Climatek |
| Certifications | ESR-3251 | AC257 Code Approved |
| Category | Hardware / Concrete Fasteners |
Technical Features
- Patented thread design with six points of contact: Eliminates stripping during installation, ensuring consistent torque transfer and a secure seat in the substrate.
- Aggressive heavy-duty thread profile: Locks mechanically into concrete for high draw and pullout strength, reducing the need for traditional anchors in qualifying applications.
- Removable and reinsertable into the same pilot hole: Threads and screw body resist damage through repeated removal and reinsertion cycles, extending usability on the job site.
- Climatek coating (AC257 code approved): Provides high corrosion resistance and is approved for use in contact with treated lumber, expanding compatible applications.
- ESR-3251 certified: Independently evaluated and approved for use in anchoring to concrete, supporting use in permitted and engineered applications.
- XL washer head design: Delivers superior holding power by distributing clamping load over a larger bearing surface area.
Applications
- Direct fastening into concrete, masonry, and similar hard substrates
- Anchoring applications where traditional mechanical anchors were previously required
- Fastening to treated lumber in contact with concrete or in corrosive environments
- Projects requiring permitted or engineered fastener solutions (ESR-3251 compliance)
- Situations requiring temporary or repeated fastening into the same pilot hole
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