We use cookies on this site to enhance your user experience. By clicking "I AGREE" below, you are giving your consent for us to set cookies. Privacy Policy

FCB/MFCB Bypass Framing Fixed-Clip Connectors

FCB/MFCB

On This Page

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: Roof Truss and Rafter Connectors, Ties, and Straps for Cold-Formed Steel Construction

The FCB/MFCB clips are economical, high-performance fixed-clip connectors that can be used for a variety of framing applications. The FCB/MFCB are rated for tension, compression, shear and in-plane loads and offer the designer the flexibility of specifying different screw and anchorage patterns that conform to desired load levels.

Key Features

  • Rated for tension, compression, shear and in-plane loads
  • Provides design flexibility with varying screw and anchorage patterns that achieve different load levels
  • Strategically placed stiffeners, embossments and anchor holes maximize connector performance

Material

  • FCB — 54 mil (16 ga.); MFCB — 68 mil (14 ga.)

Finish

  • Galvanized (G90)

Installation

  • Use the specified type and number of anchors.
  • Use the specified number of #12 self-drilling screws to CFS framing. Note if #10 self-drilling screws are preferred, reference DoD-Compliant Blast Design
  • For installations to wood framing, see Simpson Strong-Tie engineering letter Bypass Framing Fixed-Clip Connector for Wood Framing (L-CF-FIXCLIPW)

Ordering Information

FCB43.5-R25, FCB45.5-R25, FCB47.5-R25, FCB49.5-R25, FCB411.5-R25, MFCB43.5-R25, MFCB45.5-R25 and MFCB47.5-R25 contain:

  • Box of 25 connectors (screws not included)

Patent Information

  • US Patent 8,555,592

Related Literature

Product Information Table

Fastener Production Information and Stuff & Things
New products
Model No. Thickness (mil) Ga. L (in.) Product Includes Coating/Material Packaging Qty.
FCB411.5-R25 54 16 11 1/2 Box of 25 connectors (screws not included) Zinc Galvanized, G90 25
FCB43.5-R25 54 16 3 1/2 Box of 25 connectors (screws not included) Zinc Galvanized, G90 25
FCB45.5-R25 54 16 5 1/2 Box of 25 connectors (screws not included) Zinc Galvanized, G90 25
FCB47.5-R25 54 16 7 1/2 Box of 25 connectors (screws not included) Zinc Galvanized, G90 25
FCB49.5-R25 54 16 9 1/2 Box of 25 connectors (screws not included) Zinc Galvanized, G90 25
MFCB43.5-R25 68 14 3 1/2 Box of 25 connectors (screws not included) Zinc Galvanized, G90 25
MFCB45.5-R25 68 14 5 1/2 Box of 25 connectors (screws not included) Zinc Galvanized, G90 25
MFCB47.5-R25 68 14 7 1/2 Box of 25 connectors (screws not included) Zinc Galvanized, G90 25

Load Tables

FCB/MFCB Allowable Connector Loads (lb.)

FCB & MFCB Allowable Connector 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.
  2. Allowable loads are based on clip capacity only and do not consider anchorage. The capacity of the connection system will be the minimum of the tabulated value and the allowable load from the FCB & MFCB Allowable Anchorage Loads tables below.
  3. Anchorage to the supporting structure using welds or a minimum of (2) #12—24 self-drilling screws is required.
  4. Tabulated F1 loads are based on assembly tests with the load through the centerline of stud. Tested failure modes were due to screw pullout; therefore compare F1 against Fp calculated per ASCE 7-16 Chapter 13 with ap = 1.25 and Rp = 1.0.
  5. Tabulated values for 54 mil (16 ga.) CFS framing may be used for 68 mil (14 ga.) and greater steel thickness.

FCB/MFCB Standoff Distances

FCB & MFCB Allowable Connector Loads (lb.)

FCB Allowable Anchorage Loads (lb.)

Load Table - FCB Allowable Anchorage Loads
  1. For additional important information, see General Information and Notes for Curtain-Wall Framing Connectors.
  2. Min. fastener quantity and load values – fill all round holes; max. fastener quantity and load values – fill all round and triangular holes.
  3. Allowable loads are for clip anchorage only. The capacity of the connection system will be the minimum of the tabulated allowable anchorage loads the allowable load from the FCB Allowable Connector Load table above.
  4. Allowable loads for #12—24 self-drilling screws and PDPAT powder-actuated fasteners are based on installation in minimum 3/16"-thick structural steel with Fy = 36 ksi. PDPAT values are also provided for A572 steel. Values listed above maybe used where other thicknesses of steel are encountered or other manufacturers are used, provided that the fastener has equal or better tested values (see General Information and Notes for Curtain-Wall Framing Connectors). It is the responsibility of the designer to select the proper length fasteners based on the steel thickness installation.
  5. For attachment with 0.157" x 5/8" PDPAT-62KP to 3/16" thick, A572 or A992 steel, F2 and F3 allowable loads can increase to 585 lb., 800 lb. and 1,170 lb. for two, three and four fasteners, respectively.
  6. For screw fastener installation into steel backed by concrete, predrilling of both the steel and the concrete is suggested. For predrilling use a maximum 3/16"-diameter drill bit.

MFCB Allowable Anchorage Loads (lb.)

Table 2 — MFCB Allowable Anchorage Loads (lb.)
  1. For additional important information, see General Information and Notes for Curtain-Wall Framing Connectors.
  2. Min. fastener quantity and load values – fill all round holes; max. fastener quantity and load values – fill all round and triangular holes.
  3. Allowable loads are for clip anchorage only. The capacity of the connection system will be the minimum of the tabulated allowable anchorage loads the allowable load from the FCB Allowable Connector Load table above.
  4. Allowable loads for #12—24 self-drilling screws and PDPAT powder-actuated fasteners are based on installation in minimum 3/16"-thick structural steel with Fy = 36 ksi. PDPAT values are also provided for A572 steel. Values listed above maybe used where other thicknesses of steel are encountered or other manufacturers are used, provided that the fastener has equal or better tested values (see General Information and Notes for Curtain-Wall Framing Connectors). It is the responsibility of the designer to select the proper length fasteners based on the steel thickness installation.
  5. For attachment with 0.157" x 5/8" PDPAT-62KP to 3/16" thick, A572 or A992 steel, F2 and F3 allowable loads can increase to 585 lb., 800 lb. and 1,170 lb. for two, three and four fasteners, respectively.
  6. For screw fastener installation into steel backed by concrete, predrilling of both the steel and the concrete is suggested. For predrilling use a maximum 3/16"-diameter drill bit.

Code Reports & Compliance

Drawings

PDF DWG DXF RFA IFC SAT