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Hardcoat™ Precision Shafting
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( SMI )
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Our Hardcoat™ shafting is an aluminum base shaft, hard anodized using a proprietary process to achieve a greater wear and corrosion resistance than an uncoated shaft.
Precision shafting:
- Tighter toleranced than standard Hardcoat™ products
- Surface finish:

- Straightness < 0.000085 in / in
- Taper < 0.000100 in
- Taper < 0.000100 in
- Cut to Length
- Pre-Drilled Available
Standard shafting:
- 6061-T6 Aluminum Base Material
- Hard Anodized to MIL-A-8625, Type III, Class I
- Non-magnetic and vibration resistant
- Interchangeable with standard shafting
- Cut to Length
- Pre-Drilled available
| Nominal Dia. |
Standard |
Precision |
Hole Spacing |
Thread |
Weight / Inch (lbs.) |
| X |
Y |
| 3/16 |
0.1863 / 0.1871 |
0.1865 / 0.1870 |
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----- |
----- |
0.003 |
| 1/4 |
0.2488 / 0.2496 |
0.2490 / 0.2495 |
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----- |
----- |
0.005 |
| 3/8 |
0.3738 / 0.3746 |
0.3740 / 0.3745 |
----- |
----- |
----- |
0.010 |
| 1/2 |
0.4988 / 0.4996 |
0.4990 / 0.4995 |
2 |
4 |
#6-32 |
0.019 |
| 5/8 |
0.6238 / 0.6246 |
0.6240 / 0.6245 |
2 |
4 |
#8-32 |
0.030 |
| 3/4 |
0.7488 / 0.7496 |
0.7490 / 0.7495 |
3 |
6 |
#10-32 |
0.043 |
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| 1 |
0.9988 / 0.9996 |
0.9990 / 0.9995 |
3 |
6 |
1/4-20 |
0.077 |
| 1-1/4 |
1.2488 / 1.2496 |
1.2490 / 1.2495 |
3 |
6 |
5/16-18 |
0.120 |
| 1-1/2 |
1.4987 / 1.4995 |
1.4989 / 1.4994 |
4 |
8 |
3/8-16 |
0.173 |
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| 2 |
1.9985 / 1.9995 |
1.9987 / 1.9994 |
4 |
8 |
1/2-13 |
0.308 |
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