Instructions / Assembly
C-Studs (C-Series™)
Light-gauge C-shaped framing members for axial load-
bearing walls, curtain walls, tall interior partitions, floor 
joists and roof truss assemblies.
Two of the key dierences between the various 
C-stud/Joist framing members are the flange and return 
dimensions. The flange is typically the bearing surface 
for cladding materials and a key contributor to the load-
bearing capacity of the member. 
ClarkDietrich CSS™ 3" Flange
Super-wide studs/joist have a 3" flange and 
a 5/8" return and are used in very heavy 
loading and long spanning conditions.
ClarkDietrich CSE™ 2-1/2" Flange
Extra-wide studs/joist have a 2-1/2" wide 
flange and a 5/8" return and are used in floor 
joist assemblies and heavy loading conditions.
ClarkDietrich CSW™ 2" Flange
Wide studs/joist have a 2" wide flange 
and a 5/8" return that provides a 
larger bearing surface for attaching 
sub-flooring or sheathing materials. 
This framing member is also used in 
axial load-bearing wall assemblies.
ClarkDietrich CSJ™ 1-5/8" Flange
Studs/joist have a 1-5/8" flange and 
a 1/2" return and are considered the 
industry standard. CSJ members are the 
most widely used and specified framing 
members. They provide the vertical strength 
necessary for demanding load-bearing 
structural applications and sucient 
strength for many joist applications.
ClarkDietrich CWN™ 1-3/8" Flange
Curtain wall studs have a 1-3/8" flange and 
3/8" return and are used to support the 
exterior skin or cladding material (metal, 
stone, tile, glass, etc.) and the wind loads 
they are subjected to.
Product
code*
Member
Thickness
gauge 
(
mils
)
Depth
(in)
Flange
(in)
Return
(in)
CSW3 (20 & 18 gauge)
CSW5 (16, 14 & 12 gauge)
362S200-x
20 (33), 
18 (43), 
16 (54), 
14 (68), 
12 (97)
3-5/8
2 5/8
400S200-x 4
600S200-x 6
800S200-x 8
1000S200-x 10
1200S200-x 12
1400S200-x 14
Product
code*
Member
Thickness
gauge 
(
mils
)
Depth
(in)
Flange
(in)
Return
(in)
CSS3 (18 gauge)
CSS5 (16, 14 & 12 gauge)
600S300-x
18 (43), 
16 (54), 
14 (68), 
12 (97)
6
3 5/8
800S300-x 8
1000S300-x 10
1200S300-x 12
1400S300-x 14
Product
code*
Member
Thickness
gauge 
(
mils
)
Depth
(in)
Flange
(in)
Return
(in)
CSE3 (20 & 18 gauge)
CSE5 (16, 14 & 12 gauge)
362S250-x
20 (33), 
18 (43), 
16 (54), 
14 (68), 
12 (97)
3-5/8
2-1/2 5/8
400S250-x 4
600S250-x 6
800S250-x 8
1000S250-x 10
1200S250-x 12
1400S250-x 14
Product
code*
Member
Thickness
gauge 
(
mils
)
Depth
(in)
Flange
(in)
Return
(in)
CSJ3 (20 & 18 gauge)
CSJ5 (16, 14 & 12 gauge)
250S162-x
20 (33), 
18 (43), 
16 (54), 
14 (68), 
12 (97)
2-1/2
1-5/8 1/2
350S162-x 3-1/2
362S162-x 3-5/8
400S162-x 4
550S162-x 5-1/2
600S162-x 6
800S162-x 8
1000S162-x 10
1200S162-x 12
1400S162-x 14
Product
code*
Member
Thickness
gauge 
(
mils
)
Depth
(in)
Flange
(in)
Return
(in)
CWN3 (20 & 18 gauge)
CWN5 (16 & 14 gauge)
250S137-x
20 (33), 
18 (43), 
16 (54), 
14 (68)
2-1/2
1-3/8 3/8
362S137-x 3-5/8
400S137-x 4
600S137-x 6
800S137-x 8
* 20 and 18 gauge are standard as 33ksi yield strength. 16, 14 and 12 gauge are standard as 50ksi yield strength. 
x = mil thickness identifier
CSTUDS
CURTAIN WALL FRAMING
35
EXTERIOR FRAMING
The technical content of this literature is eective 5/31/12 and supersedes all previous information. Pub. No. CD-Full Line 5/12
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