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DFARS Compliance
Metal Bar Grating Stair Treads
Smooth Powder-Coated Steel
Smooth Galvanized Steel
Smooth Aluminum
Smooth Stainless Steel
Serrated Powder-Coated Steel
Serrated Galvanized Steel
Serrated Aluminum
Mounting Dimensions
Choose these stair treads for greater durability than metal plank grating stair treads. They have an open surface that prevents debris from accumulating. Nosing is textured for traction.
Powder-coated steel treads are for use in dry, noncorrosive areas.
Galvanized steel treads are more corrosion resistant than painted steel.
Aluminum treads are more corrosion resistant than galvanized steel. Plus, they're lightweight, nonsparking, and nonmagnetic.
Stainless steel treads have better corrosion resistance than steel or aluminum.
For technical drawings and 3-D models, click on a part number.
Drainage Opening | Mounting Hole | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wd. | Dp. | Ht. | Thick. | Bearing Bar Ht. | Wd. | Lg. | Load Capacity, lbs. | No. of | Dia. | Lg. | Wd. | Ctr.-to-Ctr. (A) | Ctr.-to-Tread Top (B) | Ctr.-to-Tread Nosing (C) | Mounting Hardware Included | For Use Outdoors | Each | |
Smooth | ||||||||||||||||||
Powder-Coated Steel | ||||||||||||||||||
| 24" | 8 9/16" | 2 1/2" | 3/16" | 1" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 4 1/2" | 1 3/4" | 1 1/8" | No | No | 00000000 | 000000 |
| 24" | 9 3/4" | 2 1/2" | 3/16" | 1" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | No | 00000000 | 00000 |
| 30" | 8 9/16" | 2 1/2" | 3/16" | 1" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 4 1/2" | 1 3/4" | 1 1/8" | No | No | 00000000 | 00000 |
| 30" | 9 3/4" | 2 1/2" | 3/16" | 1" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | No | 00000000 | 00000 |
| 30" | 10 15/16" | 2 1/2" | 3/16" | 1" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | No | 00000000 | 00000 |
| 36" | 9 3/4" | 2 1/2" | 3/16" | 1 1/4" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | No | 00000000 | 00000 |
| 36" | 10 15/16" | 2 1/2" | 3/16" | 1 1/4" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | No | 00000000 | 00000 |
| 36" | 12 1/8" | 2 1/2" | 3/16" | 1" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | No | 00000000 | 00000 |
| 42" | 10 15/16" | 2 1/2" | 3/16" | 1 1/4" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | No | 00000000 | 00000 |
| 48" | 9 3/4" | 2 1/2" | 3/16" | 1 1/4" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | No | 00000000 | 00000 |
| 48" | 10 15/16" | 2 1/2" | 3/16" | 1 1/4" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | No | 00000000 | 00000 |
Galvanized Steel | ||||||||||||||||||
| 24" | 8 9/16" | 2 1/2" | 3/16" | 1" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 4 1/2" | 1 3/4" | 1 1/8" | No | Yes | 00000000 | 00000 |
| 24" | 9 3/4" | 2 1/2" | 3/16" | 1" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | Yes | 00000000 | 00000 |
| 30" | 8 9/16" | 2 1/2" | 3/16" | 1" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 4 1/2" | 1 3/4" | 1 1/8" | No | Yes | 00000000 | 00000 |
| 30" | 9 3/4" | 2 1/2" | 3/16" | 1" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | Yes | 00000000 | 00000 |
| 30" | 10 15/16" | 2 1/2" | 3/16" | 1" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | Yes | 00000000 | 00000 |
| 36" | 9 3/4" | 2 1/2" | 3/16" | 1 1/4" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | Yes | 00000000 | 000000 |
| 36" | 10 15/16" | 2 1/2" | 3/16" | 1 1/4" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | Yes | 00000000 | 000000 |
| 42" | 10 15/16" | 2 1/2" | 3/16" | 1 1/4" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | Yes | 00000000 | 000000 |
| 48" | 10 15/16" | 2 1/2" | 3/16" | 1 1/4" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | Yes | 00000000 | 000000 |
Aluminum  | ||||||||||||||||||
| 18" | 8 9/16" | 3" | 3/16" | 1 1/4" | 1" | 3 3/4" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 4 1/2" | 2 1/4" | 1 1/8" | No | Yes | 0000000 | 00000 |
| 24" | 7 3/8" | 3" | 3/16" | 1 1/4" | 1" | 3 3/4" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 4 1/2" | 2 1/4" | 1 1/8" | No | Yes | 0000000 | 000000 |
| 24" | 8 9/16" | 3" | 3/16" | 1 1/4" | 1" | 3 3/4" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 4 1/2" | 2 1/4" | 1 1/8" | No | Yes | 0000000 | 00000 |
| 30" | 8 9/16" | 3" | 3/16" | 1 1/4" | 1" | 3 3/4" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 4 1/2" | 2 1/4" | 1 1/8" | No | Yes | 0000000 | 000000 |
304 Stainless Steel | ||||||||||||||||||
| 36" | 9 3/4" | 2 1/2" | 3/16" | 1 1/4" | 1" | 3 3/4" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | Yes | 000000 | 000000 |
| 36" | 10 15/16" | 2 1/2" | 3/16" | 1 1/4" | 1" | 3 3/4" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | Yes | 000000 | 000000 |
| 36" | 12 1/8" | 2 1/2" | 3/16" | 1" | 1" | 3 3/4" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | Yes | 000000 | 000000 |
| 36" | 12 1/8" | 2 1/2" | 3/16" | 1 1/4" | 1" | 3 3/4" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | Yes | 000000 | 000000 |
Serrated | ||||||||||||||||||
Powder-Coated Steel | ||||||||||||||||||
| 24" | 8 9/16" | 2 1/2" | 3/16" | 1" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 4 1/2" | 1 3/4" | 1 1/8" | No | No | 0000000 | 00000 |
| 24" | 9 3/4" | 2 1/2" | 3/16" | 1" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | No | 0000000 | 00000 |
| 30" | 8 9/16" | 2 1/2" | 3/16" | 1" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 4 1/2" | 1 3/4" | 1 1/8" | No | No | 0000000 | 00000 |
| 30" | 9 3/4" | 2 1/2" | 3/16" | 1" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | No | 0000000 | 00000 |
| 30" | 10 15/16" | 2 1/2" | 3/16" | 1" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | No | 0000000 | 00000 |
| 32" | 10 15/16" | 2 1/2" | 3/16" | 1" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | No | 000000000 | 00000 |
| 36" | 9 3/4" | 2 1/2" | 3/16" | 1 1/4" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | No | 0000000 | 00000 |
| 36" | 10 15/16" | 2 1/2" | 3/16" | 1 1/4" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | No | 0000000 | 00000 |
| 42" | 9 3/4" | 2 1/2" | 3/16" | 1 1/4" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | No | 0000000 | 00000 |
| 42" | 10 15/16" | 2 1/2" | 3/16" | 1 1/4" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | No | 0000000 | 00000 |
| 48" | 10 15/16" | 2 1/2" | 3/16" | 1 1/4" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | No | 0000000 | 000000 |
Galvanized Steel | ||||||||||||||||||
| 24" | 8 9/16" | 2 1/2" | 3/16" | 1" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 4 1/2" | 1 3/4" | 1 1/8" | No | Yes | 0000000 | 00000 |
| 24" | 9 3/4" | 2 1/2" | 3/16" | 1" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | Yes | 0000000 | 00000 |
| 30" | 8 9/16" | 2 1/2" | 3/16" | 1" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 4 1/2" | 1 3/4" | 1 1/8" | No | Yes | 0000000 | 00000 |
| 30" | 9 3/4" | 2 1/2" | 3/16" | 1" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | Yes | 0000000 | 00000 |
| 30" | 10 15/16" | 2 1/2" | 3/16" | 1" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | Yes | 0000000 | 00000 |
| 36" | 9 3/4" | 2 1/2" | 3/16" | 1 1/4" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | Yes | 0000000 | 000000 |
| 36" | 10 15/16" | 2 1/2" | 3/16" | 1 1/4" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | Yes | 0000000 | 000000 |
| 42" | 10 15/16" | 2 1/2" | 3/16" | 1 1/4" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | Yes | 0000000 | 000000 |
| 48" | 10 15/16" | 2 1/2" | 3/16" | 1 1/4" | 1" | 3 13/16" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 7" | 1 3/4" | 1 1/8" | No | Yes | 0000000 | 000000 |
Aluminum | ||||||||||||||||||
| 18" | 8 9/16" | 3" | 3/16" | 1 1/4" | 1" | 3 3/4" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 4 1/2" | 2 1/4" | 1 1/8" | No | Yes | 00000000 | 00000 |
| 24" | 7 3/8" | 3" | 3/16" | 1 1/4" | 1" | 3 3/4" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 4 1/2" | 2 1/4" | 1 1/8" | No | Yes | 00000000 | 00000 |
| 24" | 8 9/16" | 3" | 3/16" | 1 1/4" | 1" | 3 3/4" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 4 1/2" | 2 1/4" | 1 1/8" | No | Yes | 00000000 | 00000 |
| 30" | 8 9/16" | 3" | 3/16" | 1 1/4" | 1" | 3 3/4" | 300 | 4 | 7/16" | 1 7/16" | 7/16" | 4 1/2" | 2 1/4" | 1 1/8" | No | Yes | 00000000 | 00000 |
Fiberglass Stair Treads
These lightweight fiberglass treads are corrosion resistant, nonconductive, and nonmagnetic. The surface is grit coated for traction. Cut treads with a circular saw using a diamond-grit blade, and seal the cut end with an epoxy sealant (sold separately). Use Fasteners for Fiberglass Bar Grating to secure.
Drainage Opening | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Wd. | Dp. | Thick. | Bearing Bar Ht. | Wd. | Lg. | Load Capacity, lbs. | Mounting Hardware Included | For Use Outdoors | Each | |
Grit | ||||||||||
| 24" | 10 1/2" | 1/8" | 1" | 0.9" | 5 1/2" | 500 | No | Yes | 0000000 | 0000000 |
| 24" | 10 1/2" | 1/8" | 1 1/2" | 0.9" | 5 1/2" | 500 | No | Yes | 0000000 | 000000 |
| 30" | 10 1/2" | 1/8" | 1" | 0.9" | 5 1/2" | 250 | No | Yes | 0000000 | 000000 |
| 30" | 10 1/2" | 1/8" | 1 1/2" | 0.9" | 5 1/2" | 500 | No | Yes | 0000000 | 000000 |
| 36" | 10 1/2" | 1/8" | 1" | 0.9" | 5 1/2" | 250 | No | Yes | 0000000 | 000000 |
| 36" | 10 1/2" | 1/8" | 1 1/2" | 0.9" | 5 1/2" | 500 | No | Yes | 0000000 | 000000 |
| Epoxy Sealant (12 1/2 oz. Aerosol Can) | 0000000 | Each | 000000 |
Strut Channel Stair Tread Brackets
Mount these brackets to strut channel to add stair treads. They’re also known as stringers.
For technical drawings and 3-D models, click on a part number.
Lg. | ||||||||
|---|---|---|---|---|---|---|---|---|
| (A) | (B) | Thick. | Projection | Climbing Angle | Hole Dia. | Fasteners Included | Each | |
For 1 5/8" Channel Wd. | ||||||||
Zinc-Plated Steel | ||||||||
| 8 7/8" | 3 3/4" | 1/4" | 7 11/16" | 45° | 9/16" | No | 0000000 | 000000 |