{"product_id":"osg-61531-screw-machine-drill-bit-0-122-in-hss","title":"Osg 61531 Screw Machine Drill Bit 0.122 in Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 61531 is a screw machine length drill bit designed for high-performance drilling in metal and non-ferrous materials. Manufactured from high speed steel with a coated finish, this bit features a 130-degree faceted point angle and a web-thinned, tapered web configuration that reduces thrust and improves chip evacuation. At 0.122 inches (3.10 mm) in diameter with an overall length of approximately 1.97 inches (50.00 mm), the 61531 fits the short, rigid profile of screw machine length tooling. It is part of the OSG Series 1100 and is suited for machinists, toolroom technicians, and CNC operators working in production environments.\u003c\/p\u003e\u003cp\u003eThis drill bit is built for drilling steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate. The screw machine length format provides increased rigidity compared to jobber length bits, making it well suited for drill press, turret lathe, screw machine, and CNC applications where runout control and hole accuracy are critical. The straight-cylindrical shank with a 4.00 mm (approximately 0.157 inches) diameter seats cleanly in standard collets and chucks. The 5xD flute-to-diameter ratio and regular spiral flute geometry support consistent chip removal in through-hole and blind-hole operations.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eScrew machine length for added rigidity and reduced deflection in tight-tolerance drilling\u003c\/li\u003e\n\u003cli\u003e130-degree faceted point angle for fast engagement and reduced walking on entry\u003c\/li\u003e\n\u003cli\u003eWeb-thinned, tapered web configuration reduces axial thrust and improves chip flow\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction with coated finish for extended tool life in ferrous and non-ferrous materials\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, 2-flute spiral design compatible with standard spindle rotation\u003c\/li\u003e\n\u003cli\u003eSeries 1100 high performance grade with diameter tolerance of +0 to -0.018 mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a screw machine length replacement or production drill bit for use in steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces, fitting standard chucks and collets accepting a straight-cylindrical shank of approximately 0.157 inches (4.00 mm) in diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or toolroom technician familiar with rotating cutting tool safety. Secure the shank fully in the chuck or collet before operation and verify runout before production drilling. Cutting tool changes should only be made with the spindle fully stopped and machine power isolated. Consult the machine manufacturer and applicable OSHA standards for speeds, feeds, and workholding requirements appropriate to the material being drilled.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.122 inches (3.10 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.97 inches (50.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 0.709 inches (18.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.157 inches (4.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 130 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral, Regular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Faceted\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Coated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Screw Machine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 5xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: +0 to -0.018 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Materials\u003c\/strong\u003e: Steel, Stainless Steel, Aluminum, Aluminum Alloy, Aluminum Silicate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 1100\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.0017 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: OSG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 61531\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51727301116210,"sku":"61531","price":34.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a743b9bccc692987dee9746c4402afa4.jpg?v=1788676062","url":"https:\/\/voomisupply.com\/products\/osg-61531-screw-machine-drill-bit-0-122-in-hss","provider":"Voomi Supply","version":"1.0","type":"link"}