{"product_id":"500e-29-pc-cobalt-drill-bit-set","title":"500E 29 PC Cobalt Drill Bit Set","description":"\u003ch2\u003eDRILLCO 500E 29-Piece M42 Cobalt Drill Bit Set — High-Speed Drilling in Stainless Steel and Hard Alloys\u003c\/h2\u003e\n\u003cp\u003eThe DRILLCO 500E is a 29-piece M42 cobalt HSS jobber-length drill bit set engineered for heavy-duty drilling in high-strength materials including stainless steel, titanium, and high-strength alloys. Built to NAS Type J aircraft specifications, this set covers sizes from 1\/16\" to 1\/2\" by 64ths, providing a comprehensive range for professional metalworking applications. The 135° split-point geometry is self-centering, reducing thrust requirements and minimizing bit walk on curved or hard surfaces. A bronze surface treatment enhances lubricity and extends bit life while reducing chip build-up during demanding cuts.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eDRILLCO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eItem #\u003c\/td\u003e\n\u003ctd\u003e500E29\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003e045997491882\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eChina\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSet Size\u003c\/td\u003e\n\u003ctd\u003e29 Piece\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize Range\u003c\/td\u003e\n\u003ctd\u003e1\/16\" to 1\/2\" by 64ths\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eM42 Cobalt HSS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePoint Angle\u003c\/td\u003e\n\u003ctd\u003e135° Split-Point\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface Treatment\u003c\/td\u003e\n\u003ctd\u003eBronze\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecification\u003c\/td\u003e\n\u003ctd\u003eNAS Type J (Aircraft)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength Type\u003c\/td\u003e\n\u003ctd\u003eJobber Length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplications\u003c\/td\u003e\n\u003ctd\u003eDrilling holes in high strength materials, Heavy-duty drilling, Drilling in stainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTechnical Tips\u003c\/td\u003e\n\u003ctd\u003eSpeed, feed, and lube are all critical to cutting tool performance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eAvailable Sizes\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eItem #\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e500E29\u003c\/td\u003e\n\u003ctd\u003e29PC IMP COB DRILL SET 1\/16 -1\/2 BY 64TH\u003c\/td\u003e\n\u003ctd\u003e1\/16\" to 1\/2\" by 64ths\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eUnlike standard HSS drill sets, the M42 cobalt composition of the 500E provides increased hardness and wear resistance, enabling drilling speeds approximately 30% greater than conventional HSS drills. The NAS Type J aircraft specification and bronze surface treatment set this set apart from general-purpose alternatives when working with stainless steel, titanium, and other hard, tough materials.\u003c\/p\u003e\n\u003ch3\u003eKey Features \u0026amp; Benefits\u003c\/h3\u003e\n\u003ch4\u003eM42 Cobalt HSS Construction\u003c\/h4\u003e\n\u003cp\u003eM42 cobalt high-speed steel offers superior hardness and wear resistance compared to standard HSS, making it well-suited for drilling harder materials. The high red hardness of M42 cobalt allows the bits to maintain cutting performance at elevated temperatures generated during heavy-duty drilling.\u003c\/p\u003e\n\u003ch4\u003eApproximately 30% Faster Drilling Than HSS\u003c\/h4\u003e\n\u003cp\u003eCobalt drills can operate at speeds approximately 30% greater than standard HSS drills, translating directly to faster cycle times on the job. This speed advantage reduces labor time when working through stainless steel, titanium, and high-strength alloys.\u003c\/p\u003e\n\u003ch4\u003e135° Self-Centering Split-Point\u003c\/h4\u003e\n\u003cp\u003eThe 135° split-point geometry is self-centering, which reduces thrust requirements and minimizes bit walk when starting a hole. This is especially valuable when drilling on curved surfaces or in hand-drilling situations on harder materials where precise hole placement is critical.\u003c\/p\u003e\n\u003ch4\u003eBronze Surface Treatment for High Lubricity\u003c\/h4\u003e\n\u003cp\u003eThe bronze surface treatment increases lubricity and bit life while reducing chip build-up during cutting. This treatment is specifically suited for performance on harder metals and stainless steel, helping maintain consistent cutting action throughout the life of the bit.\u003c\/p\u003e\n\u003ch4\u003eNAS Type J Aircraft Specification\u003c\/h4\u003e\n\u003cp\u003eThese bits are manufactured to NAS Type J aircraft specifications, reflecting heavy-duty construction standards. This specification provides contractors and trades professionals with confidence in dimensional consistency and performance under demanding conditions.\u003c\/p\u003e\n\u003ch4\u003eJobber Length for Versatile Reach\u003c\/h4\u003e\n\u003cp\u003eJobber length is the most common drill length because it provides extra reach and can be used in most applications. This makes the 500E set a practical all-around choice for a wide range of drilling tasks on the job site or in the shop.\u003c\/p\u003e\n\u003ch3\u003eCommon Applications\u003c\/h3\u003e\n\u003ch4\u003eDrilling in Stainless Steel\u003c\/h4\u003e\n\u003cp\u003eThe M42 cobalt composition and bronze surface treatment make this set well-suited for drilling through stainless steel, where heat and hardness quickly degrade standard HSS bits.\u003c\/p\u003e\n\u003ch4\u003eDrilling in Titanium\u003c\/h4\u003e\n\u003cp\u003eTitanium's toughness demands a bit material with high hardness and wear resistance; the cobalt HSS construction of the 500E is designed for exactly these high-strength materials.\u003c\/p\u003e\n\u003ch4\u003eDrilling in High-Strength Alloys\u003c\/h4\u003e\n\u003cp\u003eFor contractors working with high-strength steel alloys and other hard, tough materials, the 500E set provides the cutting performance needed to maintain productivity without excessive bit replacement.\u003c\/p\u003e\n\u003ch4\u003eHeavy-Duty Metalworking\u003c\/h4\u003e\n\u003cp\u003eBuilt to NAS Type J aircraft specs and made from M42 cobalt HSS, these bits are designed for heavy-duty drilling applications where general-purpose HSS tooling falls short.\u003c\/p\u003e\n\u003ch3\u003eCompatible Materials\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eStainless steel\u003c\/li\u003e\n\u003cli\u003eTitanium\u003c\/li\u003e\n\u003cli\u003eHigh-strength alloys\u003c\/li\u003e\n\u003cli\u003eHard, tough metals\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Documents\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0551\/8396\/6382\/files\/zdthzlg6jaigvlhnd5ps_24d0e0ea-7316-4fa8-8954-f965bccccf08.pdf?v=1793626296\" target=\"_blank\" rel=\"noopener\"\u003eSafety Data Sheet (SDS)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0551\/8396\/6382\/files\/cinakvujelpexceens0b_ddcc33ec-3a50-47a3-9c7d-bc46cfeb4b60.pdf?v=1793626295\" target=\"_blank\" rel=\"noopener\"\u003eDrillco Product Linecard\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSafety Data Summary\u003c\/h3\u003e\n\u003ch4\u003eHazard Information\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eDuring normal operation and usage, the drill bits do not present inhalation, ingestion, or other chemical hazards.\u003c\/li\u003e\n\u003cli\u003eOperations such as grinding, cutting, machining, burning, and welding may release dusts, fumes, or vapors that may present health hazards if exposure limits are exceeded.\u003c\/li\u003e\n\u003cli\u003eExcessive inhalation of metallic fumes and dusts may cause irritation of eyes, nose, and throat.\u003c\/li\u003e\n\u003cli\u003eHigh concentrations of fumes and dusts of iron oxide, manganese, copper, zinc, and lead may result in metal fume fever (metallic taste, throat irritation, chills, fever lasting 12–48 hours).\u003c\/li\u003e\n\u003cli\u003eChronic exposure to cobalt dusts, fumes, and mists may cause permanent respiratory diseases including occupational asthma, interstitial pneumonitis and fibrosis, and emphysema.\u003c\/li\u003e\n\u003cli\u003eChromium and nickel are listed as carcinogens by NTP and OSHA; cobalt is listed as Group 2B by IARC; nickel is listed as Group 2B by IARC.\u003c\/li\u003e\n\u003cli\u003eSkin contact with dust may cause irritation or allergic skin rash due to cobalt sensitization.\u003c\/li\u003e\n\u003cli\u003eEye contact with dust may cause irritation.\u003c\/li\u003e\n\u003cli\u003eFine metal particles produced when ground or sawed can burn; high concentrations in air may present an explosion hazard.\u003c\/li\u003e\n\u003cli\u003eNFPA Hazard Rating: Health 1; Flammability 0; Reactivity 0\u003c\/li\u003e\n\u003cli\u003eCalifornia Proposition 65 Warning: This product can expose you to chemicals including Cobalt, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003ePersonal Protective Equipment\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eWear safety glasses or goggles with side shields; do not wear contact lenses when handling these materials.\u003c\/li\u003e\n\u003cli\u003eCloth or leather gloves are recommended when contact with dust or mist is likely.\u003c\/li\u003e\n\u003cli\u003eUse an appropriate NIOSH-approved respirator if airborne dust concentration exceeds the applicable PEL or TLV.\u003c\/li\u003e\n\u003cli\u003eHearing protection might be required.\u003c\/li\u003e\n\u003cli\u003eAlways use machine guards and wear protective clothing to prevent injury in the event of tool breakage.\u003c\/li\u003e\n\u003cli\u003eEmployer should provide an eye wash station within the immediate work area for emergency use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eSafe Handling\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eUse only with local exhaust ventilation adequate to limit personal exposure to airborne dust below PEL or TLV levels.\u003c\/li\u003e\n\u003cli\u003eAll grinding, welding, or fume-generating operations should be performed in well-ventilated areas.\u003c\/li\u003e\n\u003cli\u003eClean up using methods that avoid dust generation: vacuum with appropriate filters, wet dust mop, or wet clean-up.\u003c\/li\u003e\n\u003cli\u003eWash hands thoroughly after handling and before eating or smoking; wash exposed skin at end of work shift.\u003c\/li\u003e\n\u003cli\u003eDo not shake clothing, rags, or other items to remove dust — remove dust by washing or vacuuming with appropriate filters.\u003c\/li\u003e\n\u003cli\u003eStore in a dry place in a manner that prevents accidental environmental contamination from traces of industrial lubricants or wetting oils.\u003c\/li\u003e\n\u003cli\u003eSoiled clothing should be laundered separately.\u003c\/li\u003e\n\u003cli\u003eIncompatible with strong acids and strong oxidizers.\u003c\/li\u003e\n\u003cli\u003eFor powder fires: smother with dry sand, dry dolomite, ABC-type fire extinguisher, or flood with water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What materials is the DRILLCO 500E cobalt drill bit set designed to drill?\u003c\/strong\u003e\u003cbr\u003eA: The 500E is designed for drilling holes in hard, tough materials such as stainless steel, titanium, and high-strength alloys. It is built for heavy-duty drilling applications where standard HSS bits are insufficient.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How much faster can these cobalt bits drill compared to standard HSS drill bits?\u003c\/strong\u003e\u003cbr\u003eA: Cobalt drills can drill approximately 30% faster than HSS drills, due to the high red hardness of the M42 cobalt material.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What point angle do these bits use, and why does it matter?\u003c\/strong\u003e\u003cbr\u003eA: These bits feature a 135° split-point, which is self-centering. This reduces thrust requirements and minimizes walking when starting a hole, making them especially effective on curved surfaces and for hand-drilling on harder materials.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What sizes are included in the 500E29 set?\u003c\/strong\u003e\u003cbr\u003eA: The set includes 29 pieces covering sizes from 1\/16\" to 1\/2\" by 64ths, providing a comprehensive range for most metalworking drilling tasks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What specification standard do these bits meet?\u003c\/strong\u003e\u003cbr\u003eA: These bits are manufactured to NAS Type J (Aircraft) specifications, reflecting heavy-duty construction standards.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the purpose of the bronze surface treatment on these bits?\u003c\/strong\u003e\u003cbr\u003eA: The bronze surface treatment increases lubricity and bit life while reducing chip build-up. It is specifically suited for performance on harder metals and stainless steel.\u003c\/p\u003e","brand":"Drillco","offers":[{"title":"Default Title","offer_id":67924648493230,"sku":"500E29","price":217.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0551\/8396\/6382\/files\/nuzjvaodcinooo5iuomc_15dc6ba4-d962-4f70-94eb-74fa0dbbfca1.jpg?v=1793626299","url":"https:\/\/www.diamondtoolstore.com\/products\/500e-29-pc-cobalt-drill-bit-set","provider":"Diamond Tool Store","version":"1.0","type":"link"}