Build stronger, code-compliant structures with Simpson Strong-Tie joist hangers for deck, floor, and roof framing assemblies. Joist hangers support the ends of joists, rafters, and structural beams at headers, ledgers, and girders, transferring gravity and uplift loads onto steel bearing seats rather than relying solely on toe-nails.
Arlcoal.com supplies genuine Simpson Strong-Tie hangers for all standard framing configurations. Featured items in this category include Simpson LUS series face-mount hangers for single 2x4, 2x6, 2x8, and 2x10 joists (LUS24, LUS26, LUS28, LUS210), double-ply LUS hangers for 2-ply 2x6, 2x8, and 2x10 assemblies (LUS26-2, LUS28-2, LUS210-2), the LUS48 for 4x8 timber, heavy-duty HUS face-mount hangers such as the HUS1.81/10 for single 1-3/4-in x 9-1/2-in LVL beams, HU heavy-duty hangers such as the HU68 for 6x8 members, LSSU field-adjustable slope-and-skew hangers for 2x8 (LSSU28) and 2x10 (LSSU210) lumber, and LSSUI series slope-and-skew hangers for I-joists featuring 1-3/4-in and 2-5/16-in flange widths (LSSUI25, LSSUI35).
Deck builders, framing contractors, and remodelers throughout Greater Boston, Massachusetts, New Hampshire, and the surrounding New England region rely on our lumberyards as their single-source supplier for structural connectors. Partner with our team to obtain accurate material estimates at any of our regional locations:
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Hudson Lumber Company. Browse hanger sizes in our
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Selecting the correct joist hanger requires four key verifications. First, verify member dimensions: seat width must fit the actual width of the framing member (1-9/16-in for a single 2x on the LUS210Z, 3-9/16-in for a 4x on the LUS48Z, 1-13/16-in for a 1-3/4-in LVL on the HUS1.81/10, and 2-5/16-in for an I-joist flange on the LSSUI35), and seat height must support the joist depth. Second, verify joint geometry: standard face-mount hangers accommodate 90-degree square connections, whereas LSSU models feature field-hinged seats that adjust up or down for slope and left or right for skew up to 45 degrees. Third, verify environmental exposure: LUS models with a Z suffix carry ZMAX (G185) triple-zinc coatings for exterior decks and preservative-treated wood, whereas standard HUS, LSSU, and LSSUI models feature G90 galvanizing suited for dry interior framing. Fourth, verify the fastener schedule: LUS and HUS hangers utilize double-shear nailing, driving full-length fasteners at precision angles through both the joist and header to maximize load values. Short 10d x 1-1/2-in
joist hanger nails are limited to prepunched holes where Simpson design tables explicitly permit them. For engineered floor systems, pair the LSSUI35 with
TJI joists matching the flange width, and use the HUS1.81/10 where a single 1-3/4-in Microllam LVL from our
engineered lumber beams department framing connects into a header.
Buyer's guide: Technical answers to frequent questions regarding joist hangers and framing connectors.
- What size joist hanger is required for my framing member? Match the internal seat width of the hanger to the actual net width of the framing member (1-1/2-in for single 2x, 3-1/2-in for 4x, 1-3/4-in for single LVL) and the seat height to the member depth. Simpson model numbers correspond to nominal member sizes (e.g., LUS210 for 2x10; LUS48 for 4x8), but always verify exact seat dimensions against Simpson specification tables.
- Should I select ZMAX or G90 galvanizing for exterior decks and pressure-treated wood? For exterior structures and preservative-treated lumber, Simpson mandates a minimum of ZMAX (G185) triple-zinc coating or Hot-Dip Galvanized (HDG) finishes, installed with hot-dip galvanized or approved coated fasteners. Standard G90 galvanized hangers are restricted to dry interior framing. For severe coastal salt-air environments, select Type 316 stainless steel connectors.
- Which fasteners are approved for joist hanger installation, and can I use construction screws? Install the specific nail diameter and length designated by Simpson for that connector model. For example, the LUS210 requires eight 0.148-in x 3-in (10d common) nails into the header and four into the joist, driven at precision angles for double-shear resistance. Simpson Strong-Drive SD connector screws are the only code-tested screw alternative where listed in Simpson design tables; standard deck, drywall, or bugle-head screws are strictly prohibited.
- Which hangers are specified for LVL and engineered lumber beams? Select hangers sized to the exact net thickness and depth of the engineered beam. The HUS1.81/10 features a 1-13/16-in seat width designed for single 1-3/4-in x 9-1/2-in LVL members. The HU68 features a 5-1/2-in seat width sized for nominal 6x timbers or triple 1-3/4-in LVL assemblies (5-1/4-in net width); confirm fit and allowable load tables in the Simpson technical manual.
- When should I use a slope-and-skew joist hanger? Specify LSSU28, LSSU210, or LSSUI35 hangers where rafters, hip joists, or valley framing intersect headers at sloped pitch angles, skewed plan angles, or compound angles up to 45 degrees. Field-adjust the seat angle once, drive seat fasteners first, and secure sloped members at both bearing points to prevent lateral displacement.
- Are web stiffeners required when hanging I-joists? Yes. When installing LSSUI series hangers, Simpson requires field-installed wood web stiffeners on both sides of the I-joist web. Refer to both Simpson load tables and the specific I-joist manufacturer installation guide for stiffener dimensions.
- Must every prepunched nail hole be filled? Yes. Achieve published load capacities by driving specified fasteners into every prepunched hole. Missing nails or installing short 10d x 1-1/2-in nails in place of required full-length 0.148-in x 3-in nails significantly reduces allowable shear and uplift capacities.
- Can joist hangers be installed onto a single 2x ledger or header? Yes, but allowable loads must be adjusted. Simpson provides reduction factors (0.77 or 0.64 of published table loads) when driving 0.148-in x 1-1/2-in header nails into a single 1-1/2-in thick nominal 2x header. Deck ledgers must also comply with prescriptive code flashing and bolt spacing rules.
- Can pneumatic nail guns be used to install joist hangers? Yes, provided you use a dedicated positive-placement (metal connector) pneumatic nailer engineered to locate prepunched connector holes, loaded with the exact nail diameter and length specified by Simpson. Because many positive-placement nailers shoot 2-1/2-in nails, apply Simpson pneumatic reduction factors where full-length 3-in nails are specified for double-shear LUS and HUS hangers.
- Can joist hangers be field-cut or modified? Only hangers engineered for field modification. LSSU series hangers are designed for one-time field bending; Simpson explicitly states that standard face-mount hangers like the LUS series cannot be bent, cut, or modified in the field.
Popular joist hanger applications:
- Exterior deck floor framing: Mount LUS210Z hangers to secure 2x10 floor joists to house ledgers and rim boards, using ZMAX coating to withstand treated wood chemicals.
- Engineered floor systems: Install HUS1.81/10 hangers to carry single 1-3/4-in LVL floor beams, and LSSUI35 hangers to support I-joists on sloped or skewed floor layouts.
- Roof and porch rafter framing: Adjust LSSU28 and LSSU210 hangers in the field to support sloped hip, valley, and shed porch rafters.
- Heavy timber framing: Install LUS48Z hangers to support 4x8 floor joists, and HU68 heavy-duty hangers to carry 6x8 girders and heavy timber beams.
- Stairwell and skylight openings: Cradling header and trimmer joists around floor openings, stairwells, chimneys, and skylight vaults.
Expand your structural package with our complete selection of
wood connectors and hardware, including wall
brackets and braces to maintain plumb walls during framing, structural
corners and angles for blocking, engineered
fasteners for timber and masonry, protective
mending and nail plates to safeguard in-wall utilities, heavy-duty
post bases and caps such as the ABU66Z adjustable 6x6 base, and high-capacity
straps and ties including deck tension tie kits.
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