StiffClip® CL

The StiffClip® CL series’ unique design allows for the connection of steel studs to the building’s structure by incorporating stiffened legs of a 90o angle to increase bending strength. StiffClip CL resists vertical, horizontal, and torsional loads. 

Features
  • Guide holes for connections to stud and deck
  • Stiffeners for additional strength
  • Utilizes only certified, 50ksi steel
  • Reduces material (replaces heavy steel angles)
  • Extensively tested
Order Information
Designation Qty/Box Lbs/Box Qty/Skid Lbs/Skid
CL362/400-68 50 16 4,500 1,440
CL362/400-118 50 29 4,500 2,610
CL600-68 50 25 4,500 2,250
CL600-118 50 41 2,250 1,980
CL800-68 50 36 2,250 1,575
CL800-118 50 60 2,250 2,700
CL (H) Plate 50 24 4,500 2,430

Nomenclature

To specify Stiff Clip CL on drawings, multiply stud depth by 100, followed by the appropriate material thickness, based on strength required (see technical sheet for load tables). The Stiff Clip CL118(H) utilizes a plate in the 1½” leg (shown in application image).

Example: 6” stud, uplift load of 650lbs.
Designate: StiffClip® CL600-68.

Material Composition

68mil: ASTM A1003/A1003M Structural Grade 50 (340) Type H, ST50H (ST340H): 50ksi (340MPa) minimum yield strength, 65ksi (450MPa) minimum tensile strength, 68mil minimum thickness (14 gauge, 0.0713” design thickness) with ASTM A653/A653M G90 (Z275) hot dipped galvanized coating.

118mil: ASTM A1003/A1003M Structural Grade 50 (340) Type H, ST50H (ST340H): 50ksi (340MPa) minimum yield strength, 65ksi (450MPa) minimum tensile strength, 118mil minimum thickness (10 gauge, 0.1242” design thickness) with ASTM A653/A653M G90 (Z275) hot dipped galvanized coating.

“H” Plate: ½” steel, ASTM A36, 36ksi min yield, 58-80ksi min tensile, with ASTM B633 Type II Yellow Zinc Coating, or Paint, or Equivalent.

Catalogs
TSN’s Product Catalogs are an essential resource for the design of cold formed steel. Developed by Engineers, the catalogs contain design data for members, connectors, and fasteners. StiffClip® CL can be found in the following Catalogs:

TSN Cold-Formed Steel Framing Connections Order Catalog

TSN Connections Technical Catalog

TSN Cold-Formed Steel Framing Connections Technical Catalog

TSN Connections Order Catalog

For a full list of our product catalogs, specification sections, inspection checklists, and research reports please click here.

US Patents #7,533,508

StiffClip® CL Downloads

StiffClip® CL Applications

The attachment of StiffClip CL to the primary structure may be made with a PAF, screw/bolt anchors or weld and is dependent upon the base material (steel or concrete) and the design configuration.

StiffClip CL - Application

Anchor

Installation Instructions

  1. Place StiffClip® CL at bottom of stud.
  2. Attach clip to deck with approved anchor.
  3. Secure clip to stud with required amount of symmetrically placed #12 screw fasteners.
  4. If the (H) Piece is used, secure to clip with approved anchor to deck.

Allowable Loads

StiffClip® CL362/400, Recommended Allowable Load: F1,
F2, F3 (lbs) & M1 (in-lbs)
Screw Patterns with #12 Screws CL362/400-68 CL362/400-118 CL362/400-118 (H)
Pattern 1: 4 Screws Pattern 1: 4 Screws Pattern 2: 9 Screws
F1 F2 F3 M1 M1
Stiffness
F1 F2 F3 M1 M1
Stiffness
F1 F2 F3 M1 M1
Stiffness
33mil (20ga), 33ksi Stud 190 535 752 1,096 108,055 190 535 752 1,096 297,794 285 1,023 1,692 1,644 457,277
33mil (20ga), 50ksi Stud 276 774 1,088 1,586 276 774 1,088 1,586 414 1,480 2,448 2,379
43mil (18ga), 33ksi Stud 248 796 1,120 1,633 248 796 1,120 1,633 372 1,523 2,520 2,449
43mil (18ga), 50ksi Stud 358 1,152 1,151 1,804 358 1,152 1,620 2,362 537 2,203 3,645 3,542
54mil (16ga), 33ksi Stud 312 1,121 1,151 1,804 312 1,121 1,576 2,297 468 2,143 3,546 3,446
54mil (16ga), 50ksi Stud 450 1,618 1,151 1,804 450 1,618 2,225 3,318 675 3,095 5,121 4,997
68mil (14ga), 33ksi Stud 392 1,584 1,151 1,804 392 1,584 2,225 3,248 588 3,030 5,013 4,872
68mil (14ga), 50ksi Stud 568 1,917 1,151 1,804 568 2,039 2,225 3,936 852 3,900 5,713 6,271
97mil (12ga), 33ksi Stud 560 1,917 1,151 1,804 560 2,039 2,225 3,936 840 3,900 5,713 6,271
97mil (12ga), 50ksi Stud 810 1,917 1,151 1,804 810 2,039 2,225 3,936 1,215 3,900 5,713 6,271
118mil (10ga), 50ksi Stud 988 1,917 1,151 1,804 988 2,039 2,225 3,936 1,482 3,900 5,713 6,271
Maximum Allowable Clip Load 1,416 1,917 1,151 1,804  2,423 4,107 2,225 3,936 1,482 4,978 5,713 6,716

 

StiffClip® CL600, Recommended Allowable Load: F1,
F2, F3 (lbs) & M1 (in-lbs)
Screw Patterns with #12 Screws CL600-68 CL600-118 CL600-118 (H)
Pattern 3: 6 Screws Pattern 3: 6 Screws Pattern 4: 10 Screws
F1 F2 F3 M1 M1
Stiffness
F1 F2 F3 M1 M1
Stiffness
F1 F2 F3 M1 M1
Stiffness
33mil (20ga), 33ksi Stud 285 872 1,067 1,788 160,215 285 872 1,128 1,788 354,427 380 1,478 1,880 3,157 525,127
33mil (20ga), 50ksi Stud 414 1,162 1,067 2,435 414 1,262 1,632 2,588 552 2,138 2,720 4,568
43mil (18ga), 33ksi Stud 372 1,299 1,067 2,435 372 1,299 1,680 2,664 496 2,201 2,800 4,702
43mil (18ga), 50ksi Stud 537 1,879 1,067 2,435 537 1,879 2,225 3,853 716 3,184 4,050 6,801
54mil (16ga), 33ksi Stud 468 1,828 1,067 2,435 468 1,828 2,225 3,748 624 3,097 3,940 6,617
54mil (16ga), 50ksi Stud 675 2,510 1,067 2,435 675 2,640 2,225 5,413 900 4,473 5,690 7,306
68mil (14ga), 33ksi Stud 588 2,510 1,067 2,435 588 2,584 2,225 5,299 784 4,379 5,570 7,306
68mil (14ga), 50ksi Stud 852 2,510 1,067 2,435 852 3,327 2,225 5,702 1,136 5,636 6,007 7,306
97mil (12ga), 33ksi Stud 840 2,510 1,067 2,435 840 3,327 2,225 5,702 1,120 5,636 6,007 7,306
97mil (12ga), 50ksi Stud 1,215 2,510 1,067 2,435 1,215 3,327 2,225 5,702 1,620 5,636 6,007 7,306
118mil (10ga), 50ksi Stud 1,421 2,510 1,067 2,435 1,482 3,327 2,225 5,702 1,976 5,636 6,007 7,306
Maximum Allowable Clip Load 1,421 2,510 1,067 2,435  2,583 4,107 2,225 5,702 4,158 6,455 6,007 7,306

 

StiffClip® CL800, Recommended Allowable Load: F1,
F2, F3 (lbs) & M1 (in-lbs)
Screw Patterns with #12 Screws CL800-68 CL800-118 CL800-118 (H)
Pattern 5: 6 Screws Pattern 5: 6 Screws Pattern 6: 10 Screws
F1 F2 F3 M1 M1
Stiffness
F1 F2 F3 M1 M1
Stiffness
F1 F2 F3 M1 M1
Stiffness
33mil (20ga), 33ksi Stud 285 973 1,077 1,077 190,670 285 973 1,128 2,483 548,677 380 1,661 1,880 4,748 696,515
33mil (20ga), 50ksi Stud 414 1,408 1,077 2,860 414 1,408 1,632 3,592 552 2,402 2,720 6,869
43mil (18ga), 33ksi Stud 372 1,449 1,077 2,860 372 1,449 1,680 3,697 496 2,473 2,800 7,071
43mil (18ga), 50ksi Stud 537 2,096 1,077 2,680 537 2,096 2,430 5,348 716 3,577 4,050 10,227
54mil (16ga), 33ksi Stud 468 2,039 1,077 2,860 468 2,039 2,364 5,203 624 3,480 3,940 9,950
54mil (16ga), 50ksi Stud 675 2,662 1,077 2,860 675 2,945 2,666 7,514 900 5,026 5,690 11,143
68mil (14ga), 33ksi Stud 588 2,662 1,077 2,860 588 2,883 2,666 7,355 784 4,920 5,570 11,143
68mil (14ga), 50ksi Stud 852 2,662 1,077 2,860 852 3,711 2,666 8,229 1,136 6,333 7,170 11,143
97mil (12ga), 33ksi Stud 840 2,662 1,077 2,860 840 3,711 2,666 8,229 1,120 6,333 7,170 11,143
97mil (12ga), 50ksi Stud 1,215 2,662 1,077 2,860 1,215 3,711 2,666 8,229 1,620 6,333 7,170 11,143
118mil (10ga), 50ksi Stud 1,435 2,662 1,077 2,860 1,482 3,711 2,666 8,229 1,976 6,333 7,170 11,143
Maximum Allowable Clip Load 1,435< 2,662 1,077 2,860  3,356 6,410 2,666 8,229 4,816 8,274 7,446 11,143

 

StiffClip® CL, Recommended Allowable Load
(in-lbs/rad): Stiffness
Designation Screw Pattern Stiffness
CL362/400-68 4 #12 Screws, Pattern 1 108,054
CL362/400-118 4 #12 Screws, Pattern 1 297,793
CL362/400-118 (H) 9 #12 Screws, Pattern 2 457,277
CL600-68 6 #12 Screws, Pattern 3 160,215
CL600-118 6 #12 Screws, Pattern 3 354,427
CL600-118 (H) 10 #12 Screws, Pattern 4 525,127
CL800-68 6 #12 Screws, Pattern 5 190,670
CL800-118 6 #12 Screws, Pattern 5 548,677
CL800-118 (H) 10 #12 Screws, Pattern 6 696,515

Notes:

  • Design loads are for attachment of StiffClip CL to stud only. Load tables reflect in plane of wall loads (F1), horizontal loads (F2), vertical loads (F3), and overturning loads (M1).
  • M1 loads are reported as Max. Load divided by a Factor of Safety. M1 loads may be limited by the Serviceability Load calculated as Clip Stiffness times the Serviceability Limit in radian.
  • Stiffness is the Allowable Clip Moment divided by the clip rotation measured at half of the Max Allowable Clip Moment.
  • Design loads consider loads on the clip and #12 screw fasteners to the stud web.
  • Loads listed reflect force in a single direction. When multiple loads react on the connection, it is the responsibility of the designer to check the interaction of forces.
  • Torsional effects are considered on screw group for F2 allowable loads. It is assumed that half of the torsional moment is taken by the connection to the structure and half is taken by the connection to the stud.
  • Attachment to structure engineered by others.
  • Allowable loads have not been increased for wind, seismic, or other factors
  • Allowable load tables incorporate eccentric loading of fasteners. Values with a welded connection may increase.
  • Guide holes are in place for fastener installation efficiency. All guide holes may not require fasteners. Fastener amount determined by the designer. Screw fastener should be symmmetrically placed in guide holes. Refer to screw pattern diagrams below for placement.
  • Fasten within 3/4″ from the angle heel (centerline of the 1-1/2″ leg) to minimize eccentric load transfer.
  • Center guide hole is 9/16″ in diameter for 1/2″ anchors. Middle guide holes are 5/16″ in diameter for 3/8″ anchors. Outer guide holes and guide holes in 3″ leg are 0.141″ in diameter.
  • For LRFD strengths contact TSN technical services.
StiffClip CL - Load Direction

Load Direction

StiffClip CL - Load Direction

Anchor Bolt Design

StiffClip CL- Anchor Bolt Design Formula

Anchor Bolt Design Equation

StiffClip CL - Load Direction

Screw Patterns

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