Product Description
Simpson MASA-B 16-Gauge Galvanized Mudsill Anchor - 2,500-Piece Bulk Pack
The Simpson MASA Mudsill Anchor (Model MASA-B) delivers a proven, time-saving alternative to traditional anchor bolts, offering even greater load-carrying capacity for 5/8-in. and 1/2-in. mudsill anchor bolt applications on 2x, double-2x, and 3x mudsills. Engineered from 16-gauge steel with a G90 zinc galvanized finish for enhanced corrosion resistance, the MASA eliminates the need for 3-in. square plate washers in seismic design. In many applications, its load capacities meet or exceed the parallel- and perpendicular-to-plate shear capacity of other cast-in-place anchors. The standard MASA model is specifically designed for installation on standard concrete forms, where its flat profile streamlines the forming process, reduces labor, and minimizes the risk of anchor placement errors. This bulk pack contains 2,500 anchors, making it an efficient choice for high-volume residential and light commercial foundation framing projects.
Key Features
- Quick form attachment - Attaches easily to the concrete form for fast, efficient installation
- Flat profile - Lays flat on the form board so there is no anchor bolt to finish around
- Reduced labor - Eliminates the labor costs involved in drilling plates and aligning holes
- Prefab-friendly design - Flat profile eliminates chances of modification in prefabricated walls
- No stud notching required - Eliminates the need to notch studs due to anchor bolts being placed where they will interfere
- Fewer retrofits - Reduces the chance of having to retrofit anchors because of missing or misplaced anchor bolts
- Seismic-ready - Eliminates the need for 3-in. square plate washers for seismic design
- High load capacity - In some cases, load capacities meet or exceed the parallel- and perpendicular-to-plate shear capacity of other cast-in-place anchors
- 16-gauge steel construction - Provides strength and dimensional consistency
- G90 galvanized coating - Zinc galvanized (G90) for extra corrosion resistance
- Bulk quantity - 2,500 anchors per pack for high-volume applications
- Made in the United States
Specifications
- Model Number: MASA-B
- Quantity: 2,500 per bulk pack
- Gauge: 16
- Coating / Finish: Zinc Galvanized, G90
- Compatible Mudsill Sizes: 2x, double-2x, and 3x mudsills
- Compatible Anchor Bolt Sizes: 5/8-in. and 1/2-in. mudsill anchor bolts
- Minimum End Distance: 4 in.
- Minimum Center-to-Center Spacing: 8 in. for full load
- Form Type: Standard forms (use MASAP for panelized forms)
- Installation Fasteners: 0.148 in. x 1-1/2 in. nails
- Country of Origin: United States
Approved Applications
- Mudsill-to-foundation anchoring on standard concrete forms
- Replacement for 5/8-in. and 1/2-in. mudsill anchor bolts
- Seismic design applications where 3-in. square plate washers would otherwise be required
- 2x, double-2x, and 3x mudsill assemblies
- Prefabricated wall panel foundation connections
- High-volume residential and light commercial foundation framing
Frequently Asked Questions
- What mudsill sizes and anchor bolt diameters is the MASA compatible with?
- The MASA mudsill anchor is designed as an alternative for 5/8-in. and 1/2-in. mudsill anchor bolts and is compatible with 2x, double-2x, and 3x mudsills.
- How does the MASA differ from traditional anchor bolts, and does it still require square plate washers for seismic applications?
- Unlike traditional anchor bolts, the MASA attaches directly to the concrete form and lays flat on the form board, eliminating the need to drill plates, align holes, or notch studs. It also eliminates the need for 3-in. square plate washers in seismic design, and in many applications its load capacities meet or exceed the parallel- and perpendicular-to-plate shear capacity of other cast-in-place anchors.
- What are the minimum end distance and spacing requirements for full load capacity?
- The minimum MASA end distance is 4 in. and the minimum center-to-center spacing is 8 in. for full load.
- What material and coating is used, and what fasteners are recommended for installation?
- The MASA is made from 16-gauge steel with a G90 zinc galvanized finish for extra corrosion resistance. It should be installed with 0.148 in. x 1-1/2 in. nails.
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