StiffClip® WC
StiffClip® WC connects truss framing web members to chord members. Clip sizes vary with each application. Guide holes are provided in each StiffClip WC for accurate fastener placement. Design loads consider loads on the clip only. Size and number of fasteners used is based on fastener manufacturer’s allowable load data.
Features
- Stiffened ribs for added strength (use varies with each clip)
- Guide holes for attachment to framing members (0.172” dia.)
- No time and expense spent cutting steel shapes
- Structurally load tested
- Meets all building code criteria
Order Information
| Designation | Qty/Box | Lbs/Box | Qty/Skid | Lbs/Skid |
| WC350-54, 10″ lg | 100 | 56 | 4,500 | 2,555 |
| WC350-118, 10″ lg | 50 | 62 | 2,250 | 2,852 |
| WC550-54, 13″ lg | 50 | 58 | 1,600 | 1,891 |
| WC550-118, 13″ lg | 25 | 63 | 800 | 2,051 |
| WC750-54, 16″ lg | 25 | 48 | 1,500 | 2,915 |
| WC750-118, 16″ lg | 12 | 51 | 720 | 3,095 |
Nomenclature
StiffClip WC is designated by multiplying stud depth in inches by 100, then listing material, thickness and length.
Example: 3½” stud depth, 54mil steel thickness, 10″ long
Designate: StiffClip® WC350-54 10″
Material Composition
54mil: ASTM A1003/A1003M Structural Grade 40 (275) Type H, ST40H (ST275H): 40ksi (275MPa) minimum yield strength, 55ksi (380MPa) minimum tensile strength, 54mil minimum thickness (16 gauge, 0.0566″ 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.
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® WC can be found in the following Catalogs:
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For a full list of our product catalogs, specification sections, inspection checklists, and research reports please click here.
StiffClip® WC Downloads
StiffClip® WC Applications
Installation Instructions
- Place StiffClip WC at web of each framing member.
- Attach StiffClip WC to framing member with required screws through guide holes
Allowable Loads
Load Table Notes:
- Design loads are for attachment of StiffClip WC to light gauge framing members only. Allowable load tables apply to tension and compression on StiffClip WC utilizing the fastener patterns shown on the next page.
- All guide holes may not require fasteners. Number and size of fasteners used is based on fastener manufacturer’s allowable load data, and is to be verified by the designer.
- Allowable loads have not been increased for wind, seismic, or other factors.
- For LRFD strengths contact TSN technical services.
* Maximum allowable load is based on structural testing.
** Maximum allowable load is based on calculations.
33mil (20ga), 33ksi Stud
33mil (20ga), 50ksi Stud
43mil (18ga), 33ksi Stud
43mil (18ga), 50ksi Stud
54mil (16ga), 33ksi Stud
54mil (16ga), 50ksi Stud
68mil (14ga), 50ksi Stud
97mil (12ga), 50ksi Stud
Maximum Allowable Clip Load
Tension / Compression Load Direction
WC350-54, 10" Length
2 Screws
104
104
104
104
104
104
104
104
1,300*
Tension / Compression Load Direction
WC350-54, 10" Length
4 Screws
153
153
153
153
153
153
153
153
1,300*
Tension / Compression Load Direction
WC350-54, 10" Length
6 Screws
248
248
248
248
248
248
248
248
1,300*
Tension / Compression Load Direction
WC350-54, 10" Length
8 Screws
1,300
1,300
1,300
1,300
1,300
1,300
1,300
1,300
1,300*
Tension / Compression Load Direction
WC350-118, 10" Length
2 Screws
376
544
560
810
788
1,097
1,097
1,097
4,936**
Tension / Compression Load Direction
WC350-118, 10" Length
4 Screws
752
1,088
1,120
1,618
1,576
1,618
1,618
1,618
4,936**
Tension / Compression Load Direction
WC350-118, 10" Length
6 Screws
1,128
1,632
1,680
2,430
2,364
2,620
2,620
2,620
4,936**
Tension / Compression Load Direction
WC350-118, 10" Length
8 Screws
1,504
2,176
2,240
3,240
3,152
4,552
4,936
4,936
4,936**
33mil (20ga), 33ksi Stud
33mil (20ga), 50ksi Stud
43mil (18ga), 33ksi Stud
43mil (18ga), 50ksi Stud
54mil (16ga), 33ksi Stud
54mil (16ga), 50ksi Stud
68mil (14ga), 50ksi Stud
97mil (12ga), 50ksi Stud
Maximum Allowable Clip Load
Tension / Compression Load Direction
WC550-54, 13" Length
4 Screws
118
118
118
118
118
118
118
118
737**
Tension / Compression Load Direction
WC550-54, 13" Length
6 Screws
184
184
184
184
184
184
184
184
737**
Tension / Compression Load Direction
WC550-54, 13" Length
8 Screws
327
327
327
327
327
327
327
327
737**
Tension / Compression Load Direction
WC550-54, 13" Length
10 Screws
737
737
737
737
737
737
737
737
737**
Tension / Compression Load Direction
WC550-118, 13" Length
4 Screws
752
1,088
1,120
1,246
1,246
1,246
1,246
1,246
7,756**
Tension / Compression Load Direction
WC550-118, 13" Length
6 Screws
1,128
1,632
1,680
1,946
1,946
1,946
1,946
1,946
7,756**
Tension / Compression Load Direction
WC550-118, 13" Length
8 Screws
1,504
2,176
2,240
3,240
3,152
3,460
3,460
3,460
7,756**
Tension / Compression Load Direction
WC550-118, 13" Length
10 Screws
1,880
2,720
2,800
4,050
3,940
5,690
7,170
7,170
7,756**
33mil (20ga), 33ksi Stud
33mil (20ga), 50ksi Stud
43mil (18ga), 33ksi Stud
43mil (18ga), 50ksi Stud
54mil (16ga), 33ksi Stud
54mil (16ga), 50ksi Stud
68mil (14ga), 50ksi Stud
97mil (12ga), 50ksi Stud
Maximum Allowable Clip Load
Tension / Compression Load Direction
WC750-54, 16" Length
4 Screws
112
112
112
112
112
112
112
112
1,005**
Tension / Compression Load Direction
WC750-54, 16" Length
6 Screws
161
161
161
161
161
161
161
161
1,005**
Tension / Compression Load Direction
WC750-54, 16" Length
8 Screws
251
251
251
251
251
251
251
251
1,005**
Tension / Compression Load Direction
WC750-54, 16" Length
10 Screws
447
447
447
447
447
447
447
447
1,005**
Tension / Compression Load Direction
WC750-54, 16" Length
12 Screws
1,005
1,005
1,005
1,005
1,005
1,005
1,005
1,005
1,005**
Tension / Compression Load Direction
WC750-118, 16" Length
4 Screws
752
1,088
1,120
1,180
1,180
1,180
1,180
1,180
1,0576**
Tension / Compression Load Direction
WC750-118, 16" Length
6 Screws
1,128
1,632
1,680
1,699
1,699
1,699
1,699
1,699
1,0576**
Tension / Compression Load Direction
WC750-118, 16" Length
8 Screws
1,504
2,176
2,240
2,654
2,654
2,654
2,654
2,654
1,0576**
Tension / Compression Load Direction
WC750-118, 16" Length
10 Screws
1,880
2,720
2,800
4,050
3,940
4,718
4,718
4,718
1,0576**
Tension / Compression Load Direction
WC750-118, 16" Length
12 Screws
2,256
3,264
3,360
4,860
4,728
6,828
8,604
8,604
1,0576**
Load Direction
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