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Material Material |
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System of Measurement System of Measurement |
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Length Length |
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Minimum Hardness Minimum Hardness |
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Key Type Key Type |
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 | Straight |
Tolerance Rating Tolerance Rating |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement)  |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Machine Key Stock
Cut this square or rectangular key stock to length to create a straight machine key. Straight keys are the most common type of key. Machine keys are often the same material and as hard or harder than the shaft and other components with which they are used. To use a key as a sacrificial part, choose a softer key that will shear off when parts are exposed to excessive force, preventing damage to expensive equipment.
Aluminum key stock is one-third the weight of steel key stock, but not as strong. It resists corrosion and is nonmagnetic.
For technical drawings and 3-D models, click on a part number.
6061 Aluminum
Tolerance | ||||||
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| Ht. × Wd. | Tolerance Rating | Ht. | Wd. | Minimum Hardness | Each | |
12" Lg. | ||||||
| 1/8" × 1/8" | Standard | -0.008" to 0.008" | -0.008" to 0.008" | Rockwell B95 | 000000000 | 000000 |
| 3/16" × 3/16" | Standard | -0.008" to 0.008" | -0.008" to 0.008" | Rockwell B95 | 000000000 | 00000 |
| 1/4" × 1/4" | Standard | -0.008" to 0.008" | -0.008" to 0.008" | Rockwell B95 | 000000000 | 0000 |
| 5/16" × 5/16" | Standard | -0.008" to 0.008" | -0.008" to 0.008" | Rockwell B95 | 000000000 | 00000 |
| 3/8" × 3/8" | Standard | -0.008" to 0.008" | -0.008" to 0.008" | Rockwell B95 | 000000000 | 0000 |
| 1/2" × 1/2" | Standard | -0.009" to 0.009" | -0.009" to 0.009" | Rockwell B95 | 000000000 | 00000 |
| 5/8" × 5/8" | Standard | -0.009" to 0.009" | -0.009" to 0.009" | Rockwell B95 | 000000000 | 00000 |