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Light Duty Carbon Aluminum Stair Treads Photos
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Aluminum Rectangular Bar Stair Treads

Swaged

•Maximum Tread Lengths
•End Plate Dimensions
•Tread Width Including Nosing
•Weight Table Per Inch of Tread Length

 

Maximum Tread Lengths

19AP4/19AS4/19AF4
1-3/16" Center to Center of Bearing Bars
Bearing Bar Size Plain Serrated

1" x 3/16"

2'-4"

2'-2"

1-1/4" x 3/16"

2'-10"

2'-7"

1-1/2" x 3/16"

3'-6"

3'-2"

1-3/4" x 3/16"

4'-3"

3'-10"

*Maximum tread length based on 300 lb. concentrated load on front 5 in. of tread at center of tread length and deflection limitation of 1/240 length.

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End Plate Dimensions

19AP4/19AS4/19AF4
1-3/16" Center to Center of Bearing Bars
Grating Depth Up to 1-1/4" 1-1/2" to 1-3/4"

Dimension "B"

1-3/4"

2-1/4"

Dimension "C"

2-1/2"

3"

Dimension "A":  See Tread Width

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Tread Width Including Nosing

19AP4/19AS4/19AF4
1-3/16" Center to Center of Bearing Bars

No. of Bearing Bars

Bearing Bar Depth

Bolt Hole Spacing
Dimension "A"

3/16"

Tread Width

5

6-3/16"

2-1/2"

6

7-3/8"

4-1/2"

7

8-9/16"

4-1/2"

8

9-3/4"

7"

9

10-15/16"

7"

10

12-1/8"

7"

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Weight Table per Inch of Tread Length

19AP4/19AS4/19AF4
1-3/16" Center to Center of Bearing Bars

No. of Bearing Bars

Nosing*

1" x 3/16"

1-1/4" x 3/16"

1-1/2" x 3/16"

1-3/4" x 3/16"

5

G/SN

.13 .15 .18 .19
CA .17 .19 .21 .23
6

G/SN

.16 .18 .21 .23
CA .19 .21 .24 .27
7

G/SN

.18 .21 .24 .27
CA .22 .24 .28 .30
8

G/SN

.21 .23 .28 .31
CA .24 .27 .31 .34
9

G/SN

.23 .27 .31 .35
CA .26 .30 .34 .38
10

G/SN

.25 .30 .35 .39
CA .29 .33 .38 .42

*G/SN = Grooved Nose; CA = Cast Iron/Aluminum Abrasive Nosing

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