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Low-Carbon Steel Round Tubes
Also known as mild steel, low-carbon steel is easy to machine, form, and weld. It's widely fabricated into parts that don’t require high strength, such as fixture clamps, mounting plates, and spacers.
Heat treatable tubes can be surface hardened with heat treating.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
Tubes
- Yield Strength: See table
- Hardness: See table
- Heat Treatable: See table
- Specifcations Met: See table
| OD | OD Tolerance | ID | Yield Strength, psi  | Heat Treatable | Heat Treatment | Hardness | Specifications Met | 1 ft. Lg. | 2 ft. Lg. | 3 ft. Lg. | 4 ft. Lg. | 6 ft. Lg. | |
0.035" Wall Thick. (Standard Tolerance) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3/8" | -0.003" to 0.003" | 0.305" | 26,600 | Yes | __ | Rockwell B55 (Soft) | ASTM A513 Type 2 | 0000000 | |||||
| 1/2" | -0.003" to 0.003" | 0.43" | 30,000 | No | __ | Rockwell B50 (Soft) | ASTM A513 | 0000000 | |||||
0.049" Wall Thick. (Standard Tolerance) | |||||||||||||
| 1/2" | -0.003" to 0.003" | 0.402" | 30,000 | No | __ | Rockwell B50 (Soft) | ASTM A513 | 0000000 | |||||
| 5/8" | -0.003" to 0.003" | 0.527" | 30,000 | No | __ | Rockwell B50 (Soft) | ASTM A513 | 0000000 | |||||
| 3/4" | -0.003" to 0.003" | 0.652" | 30,000 | No | __ | Rockwell B50 (Soft) | ASTM A513 | 0000000 | |||||
| 1" | -0.004" to 0.004" | 0.902" | 45,000 | No | __ | Rockwell B60 (Medium) | ASTM A513 | 00000000 | |||||
| 1 1/2" | -0.005" to 0.005" | 1.402" | 45,000 | No | __ | Rockwell B60 (Medium) | ASTM A513 | 00000000 | |||||
| 2" | -0.005" to 0.005" | 1.902" | 45,000 | No | __ | Rockwell B60 (Medium) | ASTM A513 | 00000000 | |||||
0.065" Wall Thick. (Standard Tolerance) | |||||||||||||
| 1/2" | -0.004" to 0.004" | 0.37" | 30,000 | No | __ | Rockwell B50 (Soft) | ASTM A513 | 0000000 | |||||
| 5/8" | -0.003" to 0.003" | 0.495" | 30,000 | No | __ | Rockwell B50 (Soft) | ASTM A513 | 0000000 | |||||
| 3/4" | -0.004" to 0.004" | 0.62" | 30,000 | No | __ | Rockwell B50 (Soft) | ASTM A513 | 0000000 | |||||
| 7/8" | -0.004" to 0.004" | 0.745" | 30,000 | No | __ | Rockwell B50 (Soft) | ASTM A513 | 0000000 | |||||
| 1" | -0.004" to 0.004" | 0.87" | 40,000 | No | __ | Rockwell B60 (Medium) | ASTM A513 | 00000000 | |||||
| 1 1/4" | -0.004" to 0.004" | 1.12" | 30,000 | No | __ | Rockwell B50 (Soft) | ASTM A513 | 0000000 | |||||
| 1 1/2" | -0.005" to 0.005" | 1.37" | 45,000 | No | __ | Rockwell B60 (Medium) | ASTM A513 | 00000000 | |||||
| 2" | -0.005" to 0.005" | 1.87" | 38,000 | No | __ | Rockwell B60 (Medium) | ASTM A513 | 00000000 | |||||
| 3" | -0.008" to 0.008" | 2.87" | 38,000 | No | __ | Rockwell B60 (Medium) | ASTM A513 | 00000000 | |||||
| 4" | -0.01" to 0.01" | 3.87" | 38,000 | No | __ | Rockwell B60 (Medium) | ASTM A513 | 00000000 | |||||
0.083" Wall Thick. (Standard Tolerance) | |||||||||||||
| 5/8" | -0.004" to 0.004" | 0.459" | 30,000 | No | __ | Rockwell B50 (Soft) | ASTM A513 | 0000000 | |||||
| 3/4" | -0.004" to 0.004" | 0.584" | 30,000 | No | __ | Rockwell B50 (Soft) | ASTM A513 | 0000000 | |||||
| 7/8" | -0.004" to 0.004" | 0.709" | 30,000 | No | __ | Rockwell B50 (Soft) | ASTM A513 | 0000000 | |||||
| 1" | -0.004" to 0.004" | 0.834" | 30,000 | No | __ | Rockwell B50 (Soft) | ASTM A513 | 0000000 | |||||
0.095" Wall Thick. (Standard Tolerance) | |||||||||||||
| 3/4" | -0.004" to 0.004" | 0.56" | 30,000 | No | __ | Rockwell B50 (Soft) | ASTM A513 | 0000000 | |||||
| 1" | -0.004" to 0.004" | 0.81" | 30,000 | No | __ | Rockwell B50 (Soft) | ASTM A513 | 0000000 | |||||
| 1 3/4" | -0.004" to 0.004" | 1.56" | 30,000 | No | __ | Rockwell B50 (Soft) | ASTM A513 | 0000000 | |||||
0.12" Wall Thick. (Oversized Tolerance) | |||||||||||||
| 1/2" | 0" to 0.005" | 0.26" | 75,000 | No | __ | Rockwell B85 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
0.12" Wall Thick. (Standard Tolerance) | |||||||||||||
| 3/4" | -0.004" to 0.004" | 0.51" | 30,000 | No | __ | Rockwell B50 (Soft) | ASTM A513 | 0000000 | |||||
| 7/8" | -0.004" to 0.004" | 0.635" | 30,000 | No | __ | Rockwell B50 (Soft) | ASTM A513 | 0000000 | |||||
| 1" | -0.004" to 0.004" | 0.76" | 38,000 | No | __ | Rockwell B60 (Medium) | ASTM A513 | 00000000 | |||||
| 1 1/8" | -0.004" to 0.004" | 0.885" | 30,000 | No | __ | Rockwell B50 (Soft) | ASTM A513 | 0000000 | |||||
| 1 1/4" | -0.004" to 0.004" | 1.01" | 30,000 | No | __ | Rockwell B50 (Soft) | ASTM A513 | 0000000 | |||||
| 1 1/2" | -0.005" to 0.005" | 1.26" | 38,000 | No | __ | Rockwell B60 (Medium) | ASTM A513 | 00000000 | |||||
| 1 3/4" | -0.004" to 0.004" | 1.51" | 30,000 | No | __ | Rockwell B50 (Soft) | ASTM A513 | 0000000 | |||||
| 2" | -0.004" to 0.004" | 1.76" | 30,000 | No | __ | Rockwell B50 (Soft) | ASTM A513 | 0000000 | |||||
| 2 1/4" | -0.004" to 0.004" | 2.01" | 30,000 | No | __ | Rockwell B50 (Soft) | ASTM A513 | 0000000 | |||||
| 3 1/2" | -0.009" to 0.009" | 3.26" | 38,000 | No | __ | Rockwell B60 (Medium) | ASTM A513 | 00000000 | |||||
| 4" | -0.01" to 0.01" | 3.76" | 38,000 | No | __ | Rockwell B60 (Medium) | ASTM A513 | 00000000 | |||||
| 4 1/2" | -0.02" to 0.02" | 4.26" | 38,000 | No | __ | Rockwell B60 (Medium) | ASTM A513 | 00000000 | |||||
0.134" Wall Thick. (Standard Tolerance) | |||||||||||||
| 1 5/8" | -0.004" to 0.004" | 1.345" | 38,000 | No | __ | Rockwell B60 (Medium) | ASTM A513 | 0000000 | |||||
0.188" Wall Thick. (Oversized Tolerance) | |||||||||||||
| 3/4" | 0" to 0.005" | 3/8" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 1" | 0" to 0.005" | 5/8" | 45,000 | No | __ | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 1 1/8" | 0" to 0.005" | 3/4" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 1 1/4" | 0" to 0.005" | 7/8" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 1 3/8" | 0" to 0.005" | 1" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 1 1/2" | 0" to 0.005" | 1 1/8" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 1 5/8" | 0" to 0.005" | 1 1/4" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 1 3/4" | 0" to 0.006" | 1 3/8" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 2" | 0" to 0.006" | 1 5/8" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 2 1/2" | 0" to 0.008" | 2 1/8" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 3" | 0" to 0.009" | 2 5/8" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 3 1/8" | 0" to 0.009" | 2 3/4" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
1/4" Wall Thick. (Oversized Tolerance) | |||||||||||||
| 1" | 0" to 0.005" | 1/2" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 1 1/8" | 0" to 0.005" | 5/8" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 1 1/4" | 0" to 0.005" | 3/4" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 1 3/8" | 0" to 0.005" | 7/8" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 1 1/2" | 0" to 0.005" | 1" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 1 3/4" | 0" to 0.006" | 1 1/4" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 2" | 0" to 0.006" | 1 1/2" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 2 1/2" | 0" to 0.008" | 2" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 3" | 0" to 0.009" | 2 1/2" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 3 1/2" | 0" to 0.01" | 3" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 4" | 0" to 0.011" | 3 1/2" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
3/8" Wall Thick. (Oversized Tolerance) | |||||||||||||
| 1 1/2" | 0" to 0.005" | 3/4" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 1 3/4" | 0" to 0.006" | 1" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 2" | 0" to 0.006" | 1 1/4" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 2 1/4" | 0" to 0.007" | 1 1/2" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 2 1/2" | 0" to 0.008" | 1 3/4" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
1/2" Wall Thick. (Oversized Tolerance) | |||||||||||||
| 1 1/2" | 0" to 0.005" | 1/2" | 65,000 | No | __ | Rockwell B86 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 2" | 0" to 0.005" | 1" | 75,000 | No | __ | Rockwell B85 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 2 3/4" | 0" to 0.008" | 1 3/4" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 3" | 0" to 0.009" | 2" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 3 1/2" | 0" to 0.01" | 2 1/2" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 4" | 0" to 0.011" | 3" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
| 5 1/2" | 0" to 0.015" | 4 1/2" | 45,000 | No | Stress Relieved | Rockwell B60 (Medium) | ASTM A513 Type 5 | 0000000 | |||||
Metric Tubes
- Yield Strength: 34,000 psi
- Hardness: Brinell 100 (Soft)
- Heat Treatable: No
| OD, mm | OD Tolerance, mm | ID, mm | 1 ft. Lg. | 3 ft. Lg. | 6 ft. Lg. | |
1 mm Wall Thick. (Standard Tolerance) | ||||||
|---|---|---|---|---|---|---|
| 12 | -0.08 to 0.08 | 10 | 0000000 | |||
2 mm Wall Thick. (Standard Tolerance) | ||||||
| 12 | -0.08 to 0.08 | 8 | 00000000 | |||
| 20 | -0.08 to 0.08 | 16 | 0000000 | |||
3 mm Wall Thick. (Standard Tolerance) | ||||||
| 20 | -0.08 to 0.08 | 14 | 00000000 | |||
| 25 | -0.08 to 0.08 | 19 | 0000000 | |||
4 mm Wall Thick. (Standard Tolerance) | ||||||
| 25 | -0.08 to 0.08 | 17 | 00000000 | |||
| 30 | -0.08 to 0.08 | 22 | 0000000 | |||
Low-Carbon Steel Rectangular Tubes
Also known as mild steel, low-carbon steel is easy to machine, form, and weld. It's widely fabricated into parts that don’t require high strength, such as fixture clamps, mounting plates, and spacers. This material can be surface hardened with heat treating.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
Tubes
- Yield Strength: See table
- Hardness: Not Rated
- Heat Treatable: Yes
- Max. Hardness After Heat Treatment: Not Rated
- Specifications Met: See table
Outside | Inside | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ht. | Ht. Tolerance | Wd. | Wd. Tolerance | Ht. | Wd. | Yield Strength, psi | Specifications Met | Straightness Tolerance | 1 ft. Lg. | 3 ft. Lg. | 6 ft. Lg. | |
0.049" Wall Thick. (-0.005" to 0.005" Tolerance) | ||||||||||||
| 1/2" | -0.004" to 0.004" | 1/2" | -0.004" to 0.004" | 0.402" | 0.402" | Not Rated | ASTM A513 | __ | 0000000 | |||
| 5/8" | -0.004" to 0.004" | 5/8" | -0.004" to 0.004" | 0.527" | 0.527" | Not Rated | ASTM A513 | __ | 0000000 | |||
| 3/4" | -0.005" to 0.005" | 3/4" | -0.005" to 0.005" | 0.652" | 0.652" | Not Rated | ASTM A513 | __ | 0000000 | |||
0.065" Wall Thick. (-0.007" to 0.007" Tolerance) | ||||||||||||
| 1/2" | -0.03" to 0.03" | 1/2" | -0.03" to 0.03" | 0.37" | 0.37" | 32,000 | ASTM A513 | 1/16" per 3 ft. | 00000000 | |||
| 1/2" | -0.008" to 0.008" | 1 1/2" | -0.008" to 0.008" | 0.37" | 1.37" | 32,000 | ASTM A513 Type 1 | 1/16" per 3 ft. | 0000000 | |||
| 1/2" | -0.005" to 0.005" | 1" | -0.005" to 0.005" | 0.37" | 0.87" | Not Rated | ASTM A513 | __ | 0000000 | |||
| 5/8" | -0.004" to 0.004" | 5/8" | -0.004" to 0.004" | 0.495" | 0.495" | Not Rated | ASTM A513 | __ | 0000000 | |||
| 3/4" | -0.03" to 0.03" | 3/4" | -0.03" to 0.03" | 0.62" | 0.62" | 32,000 | ASTM A513 | 1/16" per 3 ft. | 00000000 | |||
| 1" | -0.03" to 0.03" | 1" | -0.03" to 0.03" | 0.87" | 0.87" | 32,000 | ASTM A513 | 1/16" per 3 ft. | 00000000 | |||
| 1" | -0.01" to 0.01" | 3" | -0.01" to 0.01" | 0.87" | 2.87" | Not Rated | ASTM A513 | __ | 0000000 | |||
| 1" | -0.008" to 0.008" | 2" | -0.008" to 0.008" | 0.87" | 1.87" | Not Rated | ASTM A513 | __ | 0000000 | |||
| 1" | -0.006" to 0.006" | 1 1/2" | -0.006" to 0.006" | 0.87" | 1.37" | Not Rated | ASTM A513 | __ | 0000000 | |||
| 1 1/4" | -0.03" to 0.03" | 1 1/4" | -0.03" to 0.03" | 1.12" | 1.12" | 32,000 | ASTM A513 | 1/16" per 3 ft. | 00000000 | |||
| 1 1/2" | -0.006" to 0.006" | 1 1/2" | -0.006" to 0.006" | 1.37" | 1.37" | 32,000 | ASTM A513 Type 1 | 1/16" per 3 ft. | 0000000 | |||
| 2" | -0.008" to 0.008" | 2" | -0.008" to 0.008" | 1.87" | 1.87" | Not Rated | ASTM A513 | __ | 0000000 | |||
0.083" Wall Thick. (-0.008" to 0.008" Tolerance) | ||||||||||||
| 3/4" | -0.03" to 0.03" | 3/4" | -0.03" to 0.03" | 0.584" | 0.584" | 32,000 | ASTM A513 | 1/16" per 3 ft. | 00000000 | |||
| 3/4" | -0.006" to 0.006" | 1 1/2" | -0.006" to 0.006" | 0.584" | 1.334" | Not Rated | ASTM A513 | __ | 000000 | |||
| 1" | -0.03" to 0.03" | 1" | -0.03" to 0.03" | 0.834" | 0.834" | 32,000 | ASTM A513 | 1/16" per 3 ft. | 00000000 | |||
| 1" | -0.01" to 0.01" | 1 1/2" | -0.01" to 0.01" | 0.834" | 1.334" | Not Rated | ASTM A513 | __ | 0000000 | |||
| 1" | -0.01" to 0.01" | 3" | -0.01" to 0.01" | 0.834" | 2.834" | Not Rated | ASTM A513 | __ | 0000000 | |||
| 1" | -0.008" to 0.008" | 2" | -0.008" to 0.008" | 0.834" | 1.834" | Not Rated | ASTM A513 | __ | 0000000 | |||
| 1 1/4" | -0.006" to 0.006" | 1 1/4" | -0.006" to 0.006" | 1.084" | 1.084" | Not Rated | ASTM A513 | __ | 0000000 | |||
| 1 1/2" | -0.03" to 0.03" | 1 1/2" | -0.03" to 0.03" | 1.334" | 1.334" | 32,000 | ASTM A513 | 1/16" per 3 ft. | 00000000 | |||
| 2" | -0.03" to 0.03" | 2" | -0.03" to 0.03" | 1.834" | 1.834" | 32,000 | ASTM A513 | 1/16" per 3 ft. | 00000000 | |||
| 2" | -0.02" to 0.02" | 4" | -0.02" to 0.02" | 1.834" | 3.834" | Not Rated | ASTM A513 | __ | 0000000 | |||
| 2 1/2" | -0.01" to 0.01" | 2 1/2" | -0.01" to 0.01" | 2.334" | 2.334" | Not Rated | ASTM A513 | __ | 0000000 | |||
0.12" Wall Thick. (-0.012" to 0.012" Tolerance) | ||||||||||||
| 3/4" | -0.005" to 0.005" | 3/4" | -0.005" to 0.005" | 0.51" | 0.51" | Not Rated | ASTM A513 | __ | 0000000 | |||
| 1" | -0.03" to 0.03" | 1" | -0.03" to 0.03" | 0.76" | 0.76" | 46,000 | ASTM A500 | 1/16" per 3 ft. | 00000000 | |||
| 1" | -0.008" to 0.008" | 2" | -0.008" to 0.008" | 0.76" | 1.76" | Not Rated | ASTM A513 | __ | 0000000 | |||
| 1" | -0.006" to 0.006" | 1 1/2" | -0.006" to 0.006" | 0.76" | 1.26" | Not Rated | ASTM A513 | __ | 0000000 | |||
| 1 1/4" | -0.006" to 0.006" | 1 1/4" | -0.006" to 0.006" | 1.01" | 1.01" | Not Rated | ASTM A513 | __ | 0000000 | |||
| 1 1/2" | -0.03" to 0.03" | 1 1/2" | -0.03" to 0.03" | 1.26" | 1.26" | 32,000 | ASTM A513 | 1/16" per 3 ft. | 00000000 | |||
| 1 1/2" | -0.01" to 0.01" | 2 1/2" | -0.01" to 0.01" | 1.26" | 2.26" | 46,000 | ASTM A513 Type 1 | 1/16" per 3 ft. | 0000000 | |||
| 2" | -0.03" to 0.03" | 2" | -0.03" to 0.03" | 1.76" | 1.76" | 46,000 | ASTM A500 | 1/16" per 3 ft. | 00000000 | |||
1/8" Wall Thick. (-0.013" to 0.013" Tolerance) | ||||||||||||
| 1" | -0.025" to 0.025" | 3" | -0.025" to 0.025" | 3/4" | 2 3/4" | 46,000 | ASTM A500 | __ | 0000000 | |||
| 1 1/2" | -0.025" to 0.025" | 3" | -0.025" to 0.025" | 1 1/4" | 2 3/4" | 46,000 | ASTM A500 | __ | 0000000 | |||
| 2 1/2" | -0.03" to 0.03" | 2 1/2" | -0.03" to 0.03" | 2 1/4" | 2 1/4" | 46,000 | ASTM A500 | 1/16" per 3 ft. | 00000000 | |||
| 3" | -0.03" to 0.03" | 3" | -0.03" to 0.03" | 2 3/4" | 2 3/4" | 46,000 | ASTM A500 | 1/16" per 3 ft. | 00000000 | |||
| 3 1/2" | -0.03" to 0.03" | 3 1/2" | -0.03" to 0.03" | 3 1/4" | 3 1/4" | 46,000 | ASTM A500 | 1/16" per 3 ft. | 00000000 | |||
| 4" | -0.03" to 0.03" | 4" | -0.03" to 0.03" | 3 3/4" | 3 3/4" | 46,000 | ASTM A500 | 1/16" per 3 ft. | 00000000 | |||
0.188" Wall Thick. (-0.019" to 0.019" Tolerance) | ||||||||||||
| 1 1/4" | -0.02" to 0.02" | 1 1/4" | -0.02" to 0.02" | 0.874" | 0.874" | 46,000 | ASTM A500 | __ | 0000000 | |||
| 1 1/2" | -0.025" to 0.025" | 3" | -0.025" to 0.025" | 1.124" | 2.624" | 46,000 | ASTM A500 | __ | 0000000 | |||
| 2" | -0.03" to 0.03" | 2" | -0.03" to 0.03" | 1.624" | 1.624" | 46,000 | ASTM A500 | 1/16" per 3 ft. | 00000000 | |||
| 2 1/2" | -0.02" to 0.02" | 2 1/2" | -0.02" to 0.02" | 2.124" | 2.124" | 46,000 | ASTM A500 | __ | 0000000 | |||
| 3" | -0.03" to 0.03" | 3" | -0.03" to 0.03" | 2.624" | 2.624" | 46,000 | ASTM A500 | 1/16" per 3 ft. | 00000000 | |||
| 4" | -0.03" to 0.03" | 4" | -0.03" to 0.03" | 3.624" | 3.624" | 46,000 | ASTM A500 | 1/16" per 3 ft. | 00000000 | |||
1/4" Wall Thick. (-0.025" to 0.025" Tolerance) | ||||||||||||
| 1 1/2" | -0.025" to 0.025" | 3" | -0.025" to 0.025" | 1" | 2 1/2" | 46,000 | ASTM A500 | __ | 0000000 | |||
| 2" | -0.03" to 0.03" | 2" | -0.03" to 0.03" | 1 1/2" | 1 1/2" | 46,000 | ASTM A500 | 1/16" per 3 ft. | 00000000 | |||
| 2 1/2" | -0.02" to 0.02" | 2 1/2" | -0.02" to 0.02" | 2" | 2" | 46,000 | ASTM A500 | __ | 0000000 | |||
| 3" | -0.03" to 0.03" | 3" | -0.03" to 0.03" | 2 1/2" | 2 1/2" | 46,000 | ASTM A500 | 1/16" per 3 ft. | 00000000 | |||
| 4" | -0.03" to 0.03" | 4" | -0.03" to 0.03" | 3 1/2" | 3 1/2" | 46,000 | ASTM A500 | 1/16" per 3 ft. | 00000000 | |||
| 6" | -0.06" to 0.06" | 6" | -0.06" to 0.06" | 5 1/2" | 5 1/2" | 46,000 | ASTM A500 | 1/16" per 3 ft. | 00000000 | |||
Metric Tubes
- Yield Strength: 34,000 psi
- Hardness: Rockwell B65 (Medium)
- Heat Treatable: Yes
- Max. Hardness After Heat Treatment: Not Rated
Outside, mm | Inside, mm | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Ht. | Ht. Tolerance | Wd. | Wd. Tolerance | Ht. | Wd. | 1 ft. Lg. | 3 ft. Lg. | 6 ft. Lg. | |
1 mm Wall Thick. (-0.15 to 0.15 mm Tolerance) | |||||||||
| 12 | -0.2 to 0.2 | 12 | -0.2 to 0.2 | 10 | 10 | 0000000 | |||
2 mm Wall Thick. (-0.1 to 0.1 mm Tolerance) | |||||||||
| 25 | -0.3 to 0.3 | 50 | -0.3 to 0.3 | 21 | 46 | 0000000 | |||
| 25 | -0.25 to 0.25 | 25 | -0.25 to 0.25 | 21 | 21 | 0000000 | |||
| 40 | -0.3 to 0.3 | 40 | -0.3 to 0.3 | 36 | 36 | 0000000 | |||
| 55 | -0.35 to 0.35 | 55 | -0.35 to 0.35 | 51 | 51 | 0000000 | |||
3 mm Wall Thick. (-0.1 to 0.1 mm Tolerance) | |||||||||
| 100 | -0.65 to 0.65 | 100 | -0.65 to 0.65 | 94 | 94 | 0000000 | |||
Ultra-Strength Carbon Steel (AHSS) Round Tubes
- Yield Strength: 100,000 psi
- Hardness: Rockwell C26 (Hard)
- Heat Treatable: No
The same steel used in automobile bodies, this AHSS (advanced high-strength steel) allows you to fabricate high-strength parts using thinner material than you could with other types of steel. It is formable, weldable, and more economical than alloy steel. It's sometimes called HSLA (high-strength low-alloy) steel.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
Telescoping Weld-Together Rails
Create posts of varying lengths. To telescope rails, slide one length of rail into the next larger size rail (for example, a 1 3/4" height rail fits into a 2" height rail and a 3/4" dia. rail fits into a 1" dia. rail). Weld the rails together at the desired length to create strong structures. These rails are not compatible with weld-together framing and fittings.
Carbon steel rails are lightly oiled.
Galvanized carbon steel rails have good corrosion resistance in wet environments and can be used outdoors.
For technical drawings and 3-D models, click on a part number.
Square
Two Square Rails Shown Telescoping (Sold Separately)
Square
Rail | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Ht. | Wd. | Wall Thick. | Lg. Tolerance | 2 ft. | 4 ft. | 6 ft. | 8 ft. | 12 ft. | |
Carbon Steel | |||||||||
| 3/4" | 3/4" | 0.08" | 0" to +0.125" | 0000000 | |||||
| 1" | 1" | 0.08" | 0" to +0.125" | 0000000 | |||||
| 1 3/4" | 1 3/4" | 0.105" | 0.25" to +0.5" | 00000000 | |||||
| 2" | 2" | 0.105" | 0.25" to +0.5" | 00000000 | |||||
| 2 1/4" | 2 1/4" | 0.105" | 0.25" to +0.5" | 00000000 | |||||
| 2 1/2" | 2 1/2" | 0.105" | 0.25" to +0.5" | 00000000 | |||||
Galvanized Carbon Steel | |||||||||
| 1 3/4" | 1 3/4" | 0.105" | 0.25" to +0.5" | 00000000 | |||||
| 2" | 2" | 0.105" | 0.25" to +0.5" | 00000000 | |||||
| 2 1/4" | 2 1/4" | 0.105" | 0.25" to +0.5" | 00000000 | |||||
| 2 1/2" | 2 1/2" | 0.105" | 0.25" to +0.5" | 00000000 | |||||
Weld-Together Framing and Fittings
Create strong structures by welding this framing together. Add metal panels to close off openings. Slide the rail into the fitting and weld in place.
For technical drawings and 3-D models, click on a part number.
Tee Connectors
Cross Connectors
Cross
Five-Way Cross
For Outside Rail | Outside | Inside | Lg. | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weld-Together Framing Component Shape | Ht. | Wd. | Ht. | Wd. | Ht. | Wd. | Wall Thick. | (A) | (B) | (C) | Yield Strength, psi | Material | Each | |
| Cross | 1 1/2" | 1 1/2" | 1 13/16" | 1 13/16" | 1 9/16" | 1 9/16" | 0.121" | 8 3/16" | 8 3/16" | __ | 80,000 | Carbon Steel | 0000000 | 0000000 |
| Cross | 2" | 2" | 2 5/16" | 2 5/16" | 2 1/16" | 2 1/16" | 0.121" | 9 11/16" | 9 11/16" | __ | 80,000 | Carbon Steel | 0000000 | 000000 |
| Five-Way Cross | 1 1/2" | 1 1/2" | 1 13/16" | 1 13/16" | 1 9/16" | 1 9/16" | 0.121" | 8 3/16" | 8 3/16" | 3 3/16" | 80,000 | Carbon Steel | 0000000 | 000000 |
| Five-Way Cross | 2" | 2" | 2 5/16" | 2 5/16" | 2 1/16" | 2 1/16" | 0.121" | 9 11/16" | 9 11/16" | 3 11/16" | 80,000 | Carbon Steel | 0000000 | 000000 |
Hollow Linear Motion Shafts
Shown with Bearing and Wiring (Not Included)
Lighter than solid shafts, hollow shafts reduce your total system weight and allow you to run various media such as electrical wiring, compressed air tubing, coolants, or lubricants through the center. These shafts are smooth, hard, and wear resistant, so they work with linear bearings to reduce friction in manual and automated systems, such as those found in packing, machine tool, and material handling operations. The exterior of these shafts is turned, ground, and polished to tight diameter and straightness tolerances. The interior is unfinished.
These shafts are hardened on the surface, so they stand up to repeated motion. All have chamfered ends to remove sharp edges and reduce damage to bearings, housings, and other components during installation.
Carbon steel shafts are strong and good for general purpose use.
Surface smoothness—The lower the microinch value, the smoother the finish and the less friction and wear it will cause on the bearing.
For technical drawings and 3-D models, click on a part number.
| Lg. | Lg. Tolerance | Dia. Tolerance | ID Tolerance | Surface Smoothness, microinch | Hardness Rating | Hardness | Each | |
Metric—1055 Carbon Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
12mm Dia. (4mm ID) | ||||||||
| __ | __ | -0.018mm to 0mm | -0.2mm to 0.2mm | 12 | Very Hard | Rockwell C59 | 00000000 | 00 |
| 300mm | -0.5mm to 0.5mm | -0.018mm to 0mm | -0.2mm to 0.2mm | 12 | Very Hard | Rockwell C59 | 0000000 | 000000 |
| 500mm | -0.8mm to 0.8mm | -0.018mm to 0mm | -0.2mm to 0.2mm | 12 | Very Hard | Rockwell C59 | 0000000 | 00000 |
| 1,000mm | -0.8mm to 0.8mm | -0.018mm to 0mm | -0.2mm to 0.2mm | 12 | Very Hard | Rockwell C59 | 0000000 | 000000 |
16mm Dia. (7mm ID) | ||||||||
| __ | __ | -0.018mm to 0mm | -0.15mm to 0.15mm | 12 | Very Hard | Rockwell C59 | 00000000 | 00 |
| 300mm | -0.5mm to 0.5mm | -0.018mm to 0mm | -0.15mm to 0.15mm | 12 | Very Hard | Rockwell C59 | 0000000 | 00000 |
| 500mm | -0.8mm to 0.8mm | -0.018mm to 0mm | -0.15mm to 0.15mm | 12 | Very Hard | Rockwell C59 | 0000000 | 00000 |
| 1,000mm | -0.8mm to 0.8mm | -0.018mm to 0mm | -0.15mm to 0.15mm | 12 | Very Hard | Rockwell C59 | 0000000 | 000000 |
20mm Dia. (14mm ID) | ||||||||
| __ | __ | -0.021mm to 0mm | -0.7mm to 0.7mm | 12 | Very Hard | Rockwell C59 | 00000000 | 00 |
| 300mm | -0.5mm to 0.5mm | -0.021mm to 0mm | -0.7mm to 0.7mm | 12 | Very Hard | Rockwell C59 | 0000000 | 00000 |
| 500mm | -0.8mm to 0.8mm | -0.021mm to 0mm | -0.7mm to 0.7mm | 12 | Very Hard | Rockwell C59 | 0000000 | 000000 |
| 1,000mm | -0.8mm to 0.8mm | -0.021mm to 0mm | -0.7mm to 0.7mm | 12 | Very Hard | Rockwell C59 | 0000000 | 000000 |
| 1,500mm | -1.2mm to 1.2mm | -0.021mm to 0mm | -0.7mm to 0.7mm | 12 | Very Hard | Rockwell C59 | 0000000 | 000000 |
25mm Dia. (15.5mm ID) | ||||||||
| __ | __ | -0.021mm to 0mm | -0.775mm to 0.775mm | 12 | Very Hard | Rockwell C59 | 00000000 | 00 |
| 300mm | -0.5mm to 0.5mm | -0.021mm to 0mm | -0.775mm to 0.775mm | 12 | Very Hard | Rockwell C59 | 0000000 | 00000 |
| 500mm | -0.8mm to 0.8mm | -0.021mm to 0mm | -0.775mm to 0.775mm | 12 | Very Hard | Rockwell C59 | 0000000 | 000000 |
| 1,000mm | -0.8mm to 0.8mm | -0.021mm to 0mm | -0.775mm to 0.775mm | 12 | Very Hard | Rockwell C59 | 0000000 | 000000 |
| 1,500mm | -1.2mm to 1.2mm | -0.021mm to 0mm | -0.775mm to 0.775mm | 12 | Very Hard | Rockwell C59 | 0000000 | 000000 |
30mm Dia. (18.2mm ID) | ||||||||
| __ | __ | -0.021mm to 0mm | -0.91mm to 0.91mm | 12 | Very Hard | Rockwell C59 | 00000000 | 00 |
| 300mm | -0.5mm to 0.5mm | -0.021mm to 0mm | -0.91mm to 0.91mm | 12 | Very Hard | Rockwell C59 | 0000000 | 00000 |
| 500mm | -0.8mm to 0.8mm | -0.021mm to 0mm | -0.91mm to 0.91mm | 12 | Very Hard | Rockwell C59 | 0000000 | 000000 |
| 1,000mm | -0.8mm to 0.8mm | -0.021mm to 0mm | -0.91mm to 0.91mm | 12 | Very Hard | Rockwell C59 | 0000000 | 000000 |
| 1,500mm | -1.2mm to 1.2mm | -0.021mm to 0mm | -0.91mm to 0.91mm | 12 | Very Hard | Rockwell C59 | 0000000 | 000000 |
40mm Dia. (26mm ID) | ||||||||
| __ | __ | -0.025mm to 0mm | -1.35mm to 1.35mm | 12 | Very Hard | Rockwell C59 | 00000000 | 00 |
| 500mm | -0.8mm to 0.8mm | -0.025mm to 0mm | -1.35mm to 1.35mm | 12 | Very Hard | Rockwell C59 | 0000000 | 000000 |
| 1,000mm | -0.8mm to 0.8mm | -0.025mm to 0mm | -1.35mm to 1.35mm | 12 | Very Hard | Rockwell C59 | 0000000 | 000000 |
| 1,500mm | -1.2mm to 1.2mm | -0.025mm to 0mm | -1.35mm to 1.35mm | 12 | Very Hard | Rockwell C59 | 0000000 | 000000 |
Hollow Linear Motion Shafts with Material Certification
Shown with Bearing and Wiring (Not Included)
Keep a material certificate on hand for compliance and quality assurance needs. Certificates include a traceable lot number and material test report. These hollow shafts reduce system weight and allow you to run various media such as electrical wiring, compressed air tubing, coolants, or lubricants through the center. Use them with linear bearings to reduce friction in manual and automated systems, such as those found in packing, machine tool, and material handling operations. They're smooth, hard, and wear resistant. Both the interior and exterior are ground and polished to tight diameter and straightness tolerances.
These shafts are heat treated to relieve internal stresses, which can cause them to warp out of tolerance. All have chamfered ends to remove sharp edges and reduce damage to bearings, housings, and other components during installation.
Surface smoothness—The lower the microinch value, the smoother the finish and the less friction and wear it will cause on the bearing.
For technical drawings and 3-D models, click on a part number.
| Lg. | Lg. Tolerance | Dia. Tolerance | ID Tolerance | Straightness Tolerance | Surface Smoothness, microinch | ID Surface Smoothness (RMS), microinch | Edge Type | Hardness Rating | Hardness | Each | |
Inch—1026 Carbon Steel | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
1 1/4" Dia. (3/4" ID) | |||||||||||
| 12" | -0.005" to 0.005" | -0.001" to 0" | 0" to 0.003" | 0.003" per ft. | 32 | 20 | Chamfered | Medium | Brinell 225 | 0000000 | 000000 |
| 24" | -0.005" to 0.005" | -0.001" to 0" | 0" to 0.003" | 0.003" per ft. | 32 | 20 | Chamfered | Medium | Brinell 225 | 0000000 | 000000 |
| 36" | -0.005" to 0.005" | -0.001" to 0" | 0" to 0.003" | 0.003" per ft. | 32 | 20 | Chamfered | Medium | Brinell 225 | 0000000 | 000000 |
| 48" | -0.005" to 0.005" | -0.001" to 0" | 0" to 0.003" | 0.003" per ft. | 32 | 20 | Chamfered | Medium | Brinell 225 | 0000000 | 000000 |
1 1/2" Dia. (1" ID) | |||||||||||
| 12" | -0.005" to 0.005" | -0.001" to 0" | 0" to 0.003" | 0.003" per ft. | 32 | 20 | Chamfered | Medium | Brinell 225 | 0000000 | 00000 |
| 24" | -0.005" to 0.005" | -0.001" to 0" | 0" to 0.003" | 0.003" per ft. | 32 | 20 | Chamfered | Medium | Brinell 225 | 0000000 | 000000 |
| 36" | -0.005" to 0.005" | -0.001" to 0" | 0" to 0.003" | 0.003" per ft. | 32 | 20 | Chamfered | Medium | Brinell 225 | 0000000 | 000000 |
| 48" | -0.005" to 0.005" | -0.001" to 0" | 0" to 0.003" | 0.003" per ft. | 32 | 20 | Chamfered | Medium | Brinell 225 | 0000000 | 000000 |
2" Dia. (1 1/2" ID) | |||||||||||
| 12" | -0.005" to 0.005" | -0.002" to 0" | 0" to 0.003" | 0.003" per ft. | 32 | 20 | Chamfered | Medium | Brinell 225 | 0000000 | 000000 |
| 24" | -0.005" to 0.005" | -0.002" to 0" | 0" to 0.003" | 0.003" per ft. | 32 | 20 | Chamfered | Medium | Brinell 225 | 0000000 | 000000 |
| 36" | -0.005" to 0.005" | -0.002" to 0" | 0" to 0.003" | 0.003" per ft. | 32 | 20 | Chamfered | Medium | Brinell 225 | 0000000 | 000000 |
| 48" | -0.005" to 0.005" | -0.002" to 0" | 0" to 0.003" | 0.003" per ft. | 32 | 20 | Chamfered | Medium | Brinell 225 | 0000000 | 000000 |