{"product_id":"51-64-x-1-4-straight-shank-counterbore-5-8-round-shank-3-flute-hss_dewcbr51-64","title":"51\/64\" X 1\/4\" Straight Shank Counterbore | HSS | 5\/8\" Round Shank | 3 Flute | DEWCBR51\/64","description":"\u003cdiv\u003eIndustrial precision counterbore tooling for metal fabrication and mechanical assembly. Designed for high-accuracy pocketing and flat-bottom hole creation in CNC and manual milling environments. \u003ch3\u003eSpecs\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eCounterbore diameter\u003c\/b\u003e: 51\/64\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eShank (straight)\u003c\/b\u003e: 1\/4\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eShank (round)\u003c\/b\u003e: 5\/8\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFlutes\u003c\/b\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMaterial\u003c\/b\u003e: HSS (High Speed Steel)\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eThree-flute geometry\u003c\/b\u003e provides efficient chip evacuation and stable cutting in counterboring operations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCounterbore capability\u003c\/b\u003e: creates flat-bottom pockets for socket head cap screws and similar fasteners, ensuring flush seating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMaterial\u003c\/b\u003e: HSS (High Speed Steel) delivers high-temperature performance and wear resistance during high-speed machining.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eShank versatility\u003c\/b\u003e: compatibility with standard tool holders via straight ¼ inch shank or round 5\/8 inch shank configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eApplications\u003c\/b\u003e: suitable for metal fabrication, fixture manufacturing, machine frames, and precision component assemblies requiring accurate counterbores. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Drill America","offers":[{"title":"Default Title","offer_id":53412335943959,"sku":"DEWCBR51\/64","price":41.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0836\/1125\/5063\/files\/4.jpg?v=1779454687","url":"https:\/\/mutualscrew.com\/products\/51-64-x-1-4-straight-shank-counterbore-5-8-round-shank-3-flute-hss_dewcbr51-64","provider":"Mutual Screw \u0026 Supply","version":"1.0","type":"link"}