SCAFCO Steel Stud Company

Steel Framing Studs and Track

Home > Products > Deflection Clips > ESC – Exterior Head-of-Wall Deflection Slide Clip

ESC – Exterior Head-of-Wall Deflection Slide Clip

The ESC slide clip attaches the exterior stud to the top track (head-of-wall), which is fastened to the building structure, allowing for vertical deflection, while maintaining lateral rigidity. These clips provide a low friction connection and prevent vertical load transfers into the curtain wall. The insert is pre-installed to the clip, making installation quick, easy, and efficient. Clips are packaged in durable buckets for easy handling on the jobsite.

ESC Clip

Features & Benefits

  • Insert allows for 1 ½” total vertical deflection
    – Greater than 1 ½” are available
  • Loads based on #10 screws
  • Large insert piece for easy installation
  • Pre-punched guide holes
  • Transfers horizontal loads into structure
  • Maintains lateral rigidity
  • Provides positive attachment at each stud
thumbnail of ESC

ESC Submittal Download

Material Composition

  • Mill certified steel
  • ASTM A653/A653M
  • Clip
    – Material thickness: 68 mil
    – Yield strength: 57ksi
    – Tensile strength: 65 ksi
    – G90 galvanized coating
  • Insert
    – Material thickness: 97 mil
    – Yield strength: 57ksi
    – Tensile strength: 65 ksi
    – G90 galvanized coating

Allowable Loads

Part No. Stud Properties F1 Allowable Loads (lbs)
Mil Gauge Fy (ksi) 2 #10 Screws
ESC
337		 33EQS 20 57 402
33 20 33 353
43EQS 18 57 635
43 18 33 526
54 16 50 830
68 14 50 830
97 12 50 830
118 10 50 830
Maximum Allowable Clip Capacity Max F1 = 830 lbs
Part No. Stud Properties F1 Allowable Loads (lbs)
Mil Gauge Fy (ksi) 2 #10 Screws 3 #10 Screws
ESC
550
750
950
1150		 33EQS 20 57 402 603
33 20 33 353 530
43EQS 18 57 635 952
43 18 33 526 789
54 16 50 1068 1602
68 14 50 1510 1855
97 12 50 1855 1855
118 10 50 1855 1855
Maximum Allowable Clip Capacity Max F1 = 1855 lbs
  1. Allowable loads have not been increased for wind, seismic, or other factors.
  2. The allowable loads are based on the steel properties of the members being connected, per AISI S100.
  3. The nominal strength of the screw must be at least 3.75 times the allowable loads.
  4. Penetration of screws through joined materials should not be less than 3 exposed threads. Install and tighten screws in accordance with the screw manufacturer’s recommendations.
  5. Screw shear capacities are based on allowable strength design (ASD) and include a safety factor of 3.0.
  6. Allowable loads indicated on the table(s) are for force in single direction only. If more than one force is applied to the connection, the designer shall provide the combined forces check as required by AISI S100.
  7. The designer shall check the bending in the short leg of clip.

Quantity / Order Information

Model No. Width Qty / Bucket lbs / Bucket
ESC337 3 ⅜” 100 50
ESC550 5 ½” 50 40
ESC750 7 ½” 50 55
ESC950 9 ½” 30 42
ESC1150 11 ½” 30 51

Al ESC slide clips include insert. Additional lengths available upon request.