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SJC Steel-Joist Connector

Rigid Connectors

This product's information may differ depending on the category of use. You are currently viewing details related to Rigid Connectors. You can also view product information related to the category: Joist Framing Connectors for Cold-Formed Steel Construction

SJC connectors have been specifically designed for various CFS joist, rafter and underside of metal-deck applications. The unique clip dimensions enable easy installation on the open side of joists and rafters with up to 3 1/2" flanges and return lips up to 3/4". For metal-deck applications, the prepunched 3/8" holes easily accommodate 6", 8", 10" and 12" on-center metal-deck flutes.

Key Features

  • Prepunched holes reduce installation cost by eliminating predrilling
  • Intuitive fastener hole positions ensure accurate clip installation in accordance with design, support a wide range of design and application requirements and provide installation flexibility
  • Angle lengths accommodate either hard-side or soft-side attachment for joists with return lips up to 3/4"
  • 4 1/2" leg length enables soft-side connections for joists with flanges up to 3 1/2"
  • Also accommodates kicker-to-metal-deck applications


  • SJC — 68 mil (50 ksi); MSJC — 97 mil (50 ksi)


  • Galvanized (G90)


  • Use all specified fasteners/anchors
  • For 6" and 8" joists: SSC connectors are recommended

Patent Information

  • US Patent D730,545

Related Literature

Product Information Table

Fastener Production Information and Stuff & Things
Model No. Thickness (mil) Ga. L (in.) Coating/Material Packaging Qty.
MSJC10.25-R15 97 12 10 1/4 Zinc Galvanized, G90 15
MSJC8.25-R15 97 12 8 1/4 Zinc Galvanized, G90 15
SJC10.25-R15 68 14 10 1/4 Zinc Galvanized, G90 15
SJC8.25-R15 68 14 8 1/4 Zinc Galvanized, G90 15

Load Tables

SJC Connectors – CFS to CFS Allowable Loads (lb.)

  1. Min. fastener quantity and load values — fill all round holes; Max. fastener quantity and load values — fill all round and triangular holes; Inner fastener quantity and load values — see illustration and image gallery for fastener placement.
  2. Allowable loads are based on bracing of the members located within 12" of the connection.
  3. Maximum allowable load for connector that may not be exceeded when designing custom installations. Designer is responsible for member and fastener design.
  4. For 6" and 8" joists, SSC connectors are recommended.
  5. See Fastening Systems for more information on Simpson Strong-Tie fasteners.
SJC Installation with Carried Member Fasteners in Inner Row
SJC Installation with Carried Member Fasteners in Inner Row

SJC Connectors – Kicker Allowable Loads (lb.)

SJC Connectors - Kicker Allowable Loads
  1. Loads apply to connectors installed perpendicular or parallel to metal deck flutes, with minimum 33 mil (20 ga.) kicker. No increase allowed for kicker with heavier thickness.
  2. Kicker angle is the acute angle measured relative to the horizontal plane of the metal deck.
  3. The tabulated value for anchor tension is per anchor. Anchors must be designed for combined shear and tension. Simpson Strong-Tie anchorage solutions are tabulated below. Alternate anchors may be utilized if designed by others.
  4. Maximum kicker load and anchorage tension at maximum load determined based on tests.
  5. See Fastening Systems for more information on Simpson Strong-Tie fasteners.
Typical SJC Installation
Typical SJC Installation
(MSJC similar)

SJC and MSJC Kicker Anchorage Solutions

  1. The allowable maximum kicker load is the minimum of anchor allowable loads or connector allowable loads per SJC Connectors — Kicker Allowable Loads table above. The anchor allowable loads include checks for anchor shear and tension interaction including the effects of eccentric loading.
  2. Allowable loads have been determined using ACI 318-14 Chapter 17 anchorage calculations with the minimum concrete compressive strength, f'c and slab thickness listed.
  3. Strong-Bolt 2 and Titen HD are 3/8"–diameter carbon steel anchor.
  4. Concrete over metal deck may be Normal Weight or Sand-Lightweight with f'c of 3,000 psi minimum and 2.5" minimum slab height above upper flute.
  5. Minimum deck flute height is 1 1/2" (distance from top flute to bottom flute). All other anchor installation requirements shall follow ICC-ES ESR-3037 and ICC-ES ESR-2713.
  6. Minimum Spacing and Edge distances for bottom of metal deck assemblies shall comply with those required in ICC-ES ESR-3037 for Strong-Bolt 2 anchors and ICC-ES ESR-2713 for Titen HD anchors.
  7. Load values are based on ACI 318-14, condition B, load factors from ACI 318-14 Section 5.3, no supplemental edge reinforcement for uncracked concrete, Ψc,v = 1.0 for cracked concrete, and periodic special inspection. Reference ICC-ES ESR-3037 and ICC-ES ESR-2713 for further information.
  8. Allowable Stress Design (ASD) values have been determined by multiplying Load Resistance Factor Design (LRFD) values by a conversion factor, Alpha (α), of 0.7 for seismic loads and 0.6 for wind loads. ASD values for other types or load combinations may be determined using alternate conversion factors.
  9. Minimum end distance to edge of panel is two times anchor embedment depth.

SJC and SSC Connectors – Soffit Stud Hanger Allowable Loads (lb.)

  1. Loads apply to connectors installed perpendicular or parallel to metal deck flutes.
  2. Stud member design per designer. Tabulated loads for stud fasteners are based on a minimum stud thickness of 33 mil (20 ga.) with a yield stress of 33 ksi. For 30 mil interior studs with a yield strength of 33 ksi, multiply the tabulated values by 0.9.
  3. Anchor design per designer. Note that the SJC requires the symmetrical placement of one anchor on each side of the stud centerline.
  4. For the bearing plate option, use Simpson Strong-Tie® BP1/2-3 bearing plates at each 3/8"-diameter anchor. Bearing plates are sold separately.

Code Reports & Compliance