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DFARS Specialty Metals
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Riser Clamps
Wide flanges support vertical pipe passing through floors.
Zinc-plated steel clamps have good corrosion resistance. 304 stainless steel clamps have excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.
ID | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Inch | Metric, mm | For Pipe Size  | Capacity, lbs. | Lg. | Ht. | Thick. | Clamping Fasteners Included | Specifications Met | Each | |
Zinc-Plated Steel | ||||||||||
| 13/16" | 21 | 1/2 | 250 | 8 1/2" | 7/8" | 1/16" | Yes | Fed. Spec. WW-H-171, Type 8; MSS-SP-58-2009, Type 8 | 0000000 | 00000 |
| 1 1/16" | 27 | 3/4 | 250 | 9" | 7/8" | 1/16" | Yes | Fed. Spec. WW-H-171, Type 8; MSS-SP-58-2009, Type 8 | 0000000 | 0000 |
| 1 5/16" | 33 | 1 | 250 | 9" | 7/8" | 1/16" | Yes | Fed. Spec. WW-H-171, Type 8; MSS-SP-58-2009, Type 8 | 0000000 | 0000 |
| 1 11/16" | 43 | 1 1/4 | 250 | 9 1/2" | 7/8" | 1/16" | Yes | Fed. Spec. WW-H-171, Type 8; MSS-SP-58-2009, Type 8 | 0000000 | 0000 |
| 1 7/8" | 48 | 1 1/2 | 250 | 9 7/8" | 7/8" | 1/16" | Yes | Fed. Spec. WW-H-171, Type 8; MSS-SP-58-2009, Type 8 | 0000000 | 0000 |
| 2 3/8" | 60 | 2 | 250 | 10 1/4" | 1" | 3/32" | Yes | Fed. Spec. WW-H-171, Type 8; MSS-SP-58-2009, Type 8 | 0000000 | 0000 |
| 2 7/8" | 73 | 2 1/2 | 390 | 11" | 1" | 3/32" | Yes | Fed. Spec. WW-H-171, Type 8; MSS-SP-58-2009, Type 8 | 0000000 | 00000 |
| 3 1/2" | 89 | 3 | 530 | 11 3/4" | 1" | 3/32" | Yes | Fed. Spec. WW-H-171, Type 8; MSS-SP-58-2009, Type 8 | 0000000 | 00000 |
| 4" | 102 | 3 1/2 | 670 | 12 5/8" | 1 1/4" | 1/8" | Yes | Fed. Spec. WW-H-171, Type 8; MSS-SP-58-2009, Type 8 | 0000000 | 00000 |
| 4 1/2" | 114 | 4 | 810 | 13" | 1 1/4" | 1/8" | Yes | Fed. Spec. WW-H-171, Type 8; MSS-SP-58-2009, Type 8 | 0000000 | 00000 |
| 5 9/16" | 141 | 5 | 1,160 | 14 1/2" | 1 1/2" | 5/32" | Yes | Fed. Spec. WW-H-171, Type 8; MSS-SP-58-2009, Type 8 | 0000000 | 00000 |
| 6 5/8" | 168 | 6 | 1,570 | 16" | 1 1/2" | 5/32" | Yes | Fed. Spec. WW-H-171, Type 8; MSS-SP-58-2009, Type 8 | 0000000 | 00000 |
| 8 5/8" | 219 | 8 | 2,500 | 18 1/4" | 2" | 3/8" | Yes | Fed. Spec. WW-H-171, Type 8; MSS-SP-58-2009, Type 8 | 0000000 | 00000 |
| 10 3/4" | 273 | 10 | 2,500 | 20 5/8" | 2" | 3/8" | Yes | Fed. Spec. WW-H-171, Type 8; MSS-SP-58-2009, Type 8 | 0000000 | 00000 |
| 12 3/4" | 324 | 12 | 2,700 | 22 3/8" | 2" | 3/8" | Yes | Fed. Spec. WW-H-171, Type 8; MSS-SP-58-2009, Type 8 | 0000000 | 00000 |
304 Stainless Steel | ||||||||||
| 13/16" | 21 | 1/2 | 220 | 8 7/8" | 1 1/4" | 3/16" | Yes | MSS-SP-58-2009, Type 8 | 0000000 | 00000 |
| 1 1/16" | 27 | 3/4 | 220 | 8 7/8" | 1 1/4" | 3/16" | Yes | MSS-SP-58-2009, Type 8 | 0000000 | 00000 |
| 1 5/16" | 33 | 1 | 220 | 8 7/8" | 1 1/4" | 3/16" | Yes | MSS-SP-58-2009, Type 8 | 0000000 | 00000 |
| 1 11/16" | 43 | 1 1/4 | 250 | 10" | 1 1/4" | 1/4" | Yes | MSS-SP-58-2009, Type 8 | 0000000 | 00000 |
| 1 7/8" | 48 | 1 1/2 | 250 | 10 1/4" | 1 1/4" | 1/4" | Yes | MSS-SP-58-2009, Type 8 | 0000000 | 00000 |
| 2 3/8" | 60 | 2 | 300 | 10 1/4" | 1 1/4" | 1/4" | Yes | MSS-SP-58-2009, Type 8 | 0000000 | 00000 |
| 2 7/8" | 73 | 2 1/2 | 400 | 11 1/4" | 1 1/4" | 1/4" | Yes | MSS-SP-58-2009, Type 8 | 0000000 | 00000 |
| 3 1/2" | 89 | 3 | 500 | 11 3/8" | 1 1/4" | 1/4" | Yes | MSS-SP-58-2009, Type 8 | 0000000 | 00000 |
| 4" | 102 | 3 1/2 | 600 | 12 7/8" | 1 1/2" | 1/4" | Yes | MSS-SP-58-2009, Type 8 | 0000000 | 00000 |
| 4 1/2" | 114 | 4 | 750 | 12 7/8" | 1 1/2" | 1/4" | Yes | MSS-SP-58-2009, Type 8 | 0000000 | 00000 |
| 5 9/16" | 141 | 5 | 1,160 | 13 3/4" | 2" | 1/4" | Yes | MSS-SP-58-2009, Type 8 | 0000000 | 00000 |
| 6 5/8" | 168 | 6 | 1,570 | 14 3/4" | 2" | 1/4" | Yes | MSS-SP-58-2009, Type 8 | 0000000 | 00000 |
| 8 5/8" | 219 | 8 | 2,500 | 18 1/2" | 2" | 3/8" | Yes | MSS-SP-58-2009, Type 8 | 0000000 | 000000 |
| 10 3/4" | 273 | 10 | 2,500 | 20 1/4" | 2" | 3/8" | Yes | MSS-SP-58-2009, Type 8 | 0000000 | 000000 |
| 12 3/4" | 324 | 12 | 2,700 | 22 3/4" | 2" | 1/2" | Yes | MSS-SP-58-2009, Type 8 | 0000000 | 000000 |
Manhole Riser Rings
Raise manhole covers that have sunk or aren’t level with the surface after repaving. These rings are simple to install—just place them on top of the existing frame. Made of cast iron, they’re strong enough to handle heavy traffic from pedestrians and vehicles.
For technical drawings and 3-D models, click on a part number.