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Revenue Recognition (Tables) | 12 Months Ended
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Dec. 31, 2020
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue | Disaggregated revenue by product type follows:
| Unaudited
| Year Ended December 31,
Product Category | 2020 |  | 2019
Fastening systems | 22% |  | 24%
Cutting tools and abrasives | 14% |  | 13%
Fluid power | 13% |  | 15%
Specialty chemicals | 11% |  | 11%
Electrical | 10% |  | 11%
Aftermarket automotive supplies | 7% |  | 8%
Safety | 6% |  | 5%
Welding and metal repair | 2% |  | 2%
Other | 15% |  | 11%
| 100% |  | 100%

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045 + Details
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