Steel C-Clamp with Locknut, Domestic – Fig. 21L

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Material

Carbon steel, also available in 304 stainless steel (21LSS) and 316 stainless steel (21LSX).

Finish

Plain, electro-galvanized.

Service

Designed for attaching hanger rod to the bottom flange of a beam. Features the ribbed design for added strength. Hardened steel cup point set screw secures clamp to beam.

Approvals

UL - U.L.C. listed 3/8 and 1/2 (1/2 for 4" IPS max) with locknut only. FM approved for 3/8 only with and without locknut. Complies with Federal Specification WW-H-171-E (Type# 23), A-A-1192 A (Type# 23), Manufacturers' Standard Society SP-58 and MSS SP-69 (Type# 23)

Ordering

Specify rod size, figure number and finish.

Notes

See MSS SP-69 for proper set screw torque recommendations.

Size A

3/8-16
1/2-13
5/8-11

3/4-10
7/8-9
Set Screw

3/8-16
3/8-16
1/2-13

5/8-11
3/4-10
C

2 3/8
2 3/8
2 3/8

2 3/8
3
D

2 3/8
2 3/8
2 5/16

2 5/16
3 5/16
E

1
1
7/8

7/8
1 1/4
F

3/4
3/4
3/4

3/4
1
Max Pipe Size

4
4
5

6
8

Wgt Each (lbs)

21 (w/out Nut)

0.38
0.38
0.56

0.60
1.76
21L (w/ Nut)

0.40
0.40
0.60

0.68
1.88
Max REC Load (lbs)

400
500
500

630
1200

Steel C-Clamp with Locknut, Domestic – Fig. 21L

Size A

Set Screw

C

D

E

F

Max Pipe Size

Wgt Each (lbs)

21 (w/out Nut)

21L (w/ Nut)

Max REC Load (lbs)

All Rights Reserved. Copyright 2017 Industrial Threaded Products 777 Mount Ave Wyandanch, NY 11798 Tel: (631) 665-9300 Fax: (631) 491-0897

All Rights Reserved. Copyright 2017 Industrial Threaded Products
777 Mount Ave Wyandanch, NY 11798 Tel: (631) 665-9300 Fax: (631) 491-0897