{"product_id":"km-plus-hard-cross-groove-countersunk-head-machine-screw-quenching-hair-black-flat-head-bolt-screw-m2-m2-5-m3","title":"Hardened cross groove countersunk head machine screw quenching hair black flat head bolt screw for Industrial \u0026 Construction Use","description":"\u003cdiv id=\"offer-template-0\"\u003e\n\u003cdiv style='color: rgb(31, 35, 41); font: 16px \/ 24px ui-sans-serif, system-ui, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"; font-size: 16px; font-weight: 400; line-height: 24px; text-align: left; white-space: normal; display: block; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background: rgba(0, 0, 0, 0) none repeat scroll 0% 0% \/ auto padding-box border-box; background-color: rgba(0, 0, 0, 0);'\u003eOur Hardened Cross Slot Countersunk Head Machine Screws, also known as quenched black oxide flat head bolts, are professional high-strength fasteners engineered for industrial, construction, and equipment assembly applications. Crafted with precision quenching and tempering technology, these screws undergo a specialized hardening process to enhance their mechanical strength, wear resistance, and load-bearing capacity—making them ideal for heavy-duty and high-stress installations where reliability is critical.\u003c\/div\u003e\n\n\u003cdiv style='color: rgb(31, 35, 41); font: 16px \/ 24px ui-sans-serif, system-ui, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"; font-size: 16px; font-weight: 400; line-height: 24px; text-align: left; white-space: normal; display: block; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background: rgba(0, 0, 0, 0) none repeat scroll 0% 0% \/ auto padding-box border-box; background-color: rgba(0, 0, 0, 0);'\u003e \u003c\/div\u003e\n\n\u003cdiv style='color: rgb(31, 35, 41); font: 16px \/ 24px ui-sans-serif, system-ui, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"; font-size: 16px; font-weight: 400; line-height: 24px; text-align: left; white-space: normal; display: block; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background: rgba(0, 0, 0, 0) none repeat scroll 0% 0% \/ auto padding-box border-box; background-color: rgba(0, 0, 0, 0);'\u003eFeaturing a cross slot (Phillips) drive and countersunk (flat) head design, these screws offer easy, efficient installation with standard Phillips screwdrivers, ensuring a secure fit even in tight spaces. The countersunk head sits perfectly flush with the surface of the fastened material, creating a clean, low-profile finish that eliminates protrusions—ideal for applications where a smooth surface is required, such as machinery panels, equipment casings, and construction fixtures. The black oxide (hair black) surface treatment not only enhances the screws’ aesthetic appeal but also provides excellent corrosion resistance and rust protection, extending their service life in harsh industrial environments.\u003c\/div\u003e\n\n\u003cdiv style='color: rgb(31, 35, 41); font: 16px \/ 24px ui-sans-serif, system-ui, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"; font-size: 16px; font-weight: 400; line-height: 24px; text-align: left; white-space: normal; display: block; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background: rgba(0, 0, 0, 0) none repeat scroll 0% 0% \/ auto padding-box border-box; background-color: rgba(0, 0, 0, 0);'\u003e \u003c\/div\u003e\n\n\u003cdiv style='color: rgb(31, 35, 41); font: 16px \/ 24px ui-sans-serif, system-ui, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"; font-size: 16px; font-weight: 400; line-height: 24px; text-align: left; white-space: normal; display: block; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background: rgba(0, 0, 0, 0) none repeat scroll 0% 0% \/ auto padding-box border-box; background-color: rgba(0, 0, 0, 0);'\u003eThe quenching hardening process ensures these machine screws deliver superior durability and tensile strength, able to withstand high torque and heavy loads without bending or breaking. Made from high-quality steel, they are compatible with a wide range of materials, including metal, wood, and plastic, making them versatile for various industrial and construction scenarios. Whether used in machinery assembly, equipment maintenance, construction projects, or hardware installation, these screws provide a reliable, long-lasting fastening solution.\u003c\/div\u003e\n\n\u003cdiv style='color: rgb(31, 35, 41); font: 16px \/ 24px ui-sans-serif, system-ui, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"; font-size: 16px; font-weight: 400; line-height: 24px; text-align: left; white-space: normal; display: block; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background: rgba(0, 0, 0, 0) none repeat scroll 0% 0% \/ auto padding-box border-box; background-color: rgba(0, 0, 0, 0);'\u003e \u003c\/div\u003e\n\n\u003cdiv style='color: rgb(31, 35, 41); font: 16px \/ 24px ui-sans-serif, system-ui, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"; font-size: 16px; font-weight: 400; line-height: 24px; text-align: left; white-space: normal; display: block; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background: rgba(0, 0, 0, 0) none repeat scroll 0% 0% \/ auto padding-box border-box; background-color: rgba(0, 0, 0, 0);'\u003eDesigned for professional use, these cross slot countersunk head machine screws are precision-machined to meet strict industrial standards, ensuring consistent dimensions and a secure, slip-resistant fit during installation. The black oxide coating adds an extra layer of protection against moisture, chemicals, and wear, making them suitable for both indoor and outdoor use, including humid or semi-exposed environments.\u003c\/div\u003e\n\n\u003cdiv style='color: rgb(31, 35, 41); font: 16px \/ 24px ui-sans-serif, system-ui, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"; font-size: 16px; font-weight: 400; line-height: 24px; text-align: left; white-space: normal; display: block; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background: rgba(0, 0, 0, 0) none repeat scroll 0% 0% \/ auto padding-box border-box; background-color: rgba(0, 0, 0, 0);'\u003e \u003c\/div\u003e\n\n\u003cdiv style='color: rgb(31, 35, 41); font: 16px \/ 24px ui-sans-serif, system-ui, sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\", \"Noto Color Emoji\"; font-size: 16px; font-weight: 400; line-height: 24px; text-align: left; white-space: normal; display: block; flex: 0 1 auto; flex-direction: row; justify-content: normal; align-items: normal; padding: 0px; margin: 0px; background: rgba(0, 0, 0, 0) none repeat scroll 0% 0% \/ auto padding-box border-box; background-color: rgba(0, 0, 0, 0);'\u003eVersatile and robust, these hardened machine screws are a staple for professionals in industrial, construction, and equipment fields. They combine strength, durability, and ease of use, delivering the reliable fastening performance needed for heavy-duty applications and ensuring long-term stability for your projects.\u003c\/div\u003e\n\u003c\/div\u003e\n","brand":"Vichok Hardware","offers":[{"title":"M2 * 3 (1000 pieces)","offer_id":46709889433777,"sku":"SCR00321-M2x3","price":1.8,"currency_code":"USD","in_stock":true},{"title":"M2 * 4 (1000 pieces)","offer_id":46709889466545,"sku":"SCR00321-M2x4","price":1.66,"currency_code":"USD","in_stock":true},{"title":"M2 * 5 (1000 pieces)","offer_id":46709889499313,"sku":"SCR00321-M2x5","price":1.66,"currency_code":"USD","in_stock":true},{"title":"M2 * 6 (1000 pcs)","offer_id":46709889532081,"sku":"SCR00321-M2x6","price":1.8,"currency_code":"USD","in_stock":true},{"title":"M2 * 8 (1000 pieces)","offer_id":46709889564849,"sku":"SCR00321-M2x8","price":2.08,"currency_code":"USD","in_stock":true},{"title":"M2 * 10 (1 thousand)","offer_id":46709889597617,"sku":"SCR00321-M2x10","price":2.22,"currency_code":"USD","in_stock":true},{"title":"M2.5 * 4 (1 thousand)","offer_id":46709889630385,"sku":"SCR00321-M2.5x4","price":2.22,"currency_code":"USD","in_stock":true},{"title":"M2.5 * 5 (1 thousand)","offer_id":46709889663153,"sku":"SCR00321-M2.5x5","price":2.22,"currency_code":"USD","in_stock":true},{"title":"M2.5 * 6 (1 thousand)","offer_id":46709889695921,"sku":"SCR00321-M2.5x6","price":2.22,"currency_code":"USD","in_stock":true},{"title":"M2.5 * 8 (1 thousand)","offer_id":46709889728689,"sku":"SCR00321-M2.5x8","price":2.5,"currency_code":"USD","in_stock":true},{"title":"M2.5 * 10 (1 thousand)","offer_id":46709889761457,"sku":"SCR00321-M2.5x10","price":2.9,"currency_code":"USD","in_stock":true},{"title":"M3 * 4 (1000 pcs)","offer_id":46709889794225,"sku":"SCR00321-M3x4","price":2.78,"currency_code":"USD","in_stock":true},{"title":"M3 * 5 (1,000 pcs)","offer_id":46709889826993,"sku":"SCR00321-M3x5","price":2.9,"currency_code":"USD","in_stock":true},{"title":"M3 * 6 (1000 pcs)","offer_id":46709889859761,"sku":"SCR00321-M3x6","price":3.18,"currency_code":"USD","in_stock":true},{"title":"M3 * 7 (1,000 pcs)","offer_id":46709889892529,"sku":"SCR00321-M3x7","price":4.16,"currency_code":"USD","in_stock":true},{"title":"M3 * 8 (1000 pcs)","offer_id":46709889925297,"sku":"SCR00321-M3x8","price":3.88,"currency_code":"USD","in_stock":true},{"title":"M3 * 10 (1000 pieces)","offer_id":46709889958065,"sku":"SCR00321-M3x10","price":4.16,"currency_code":"USD","in_stock":true},{"title":"M3 * 12 (1000 pieces)","offer_id":46709889990833,"sku":"SCR00321-M3x12","price":4.44,"currency_code":"USD","in_stock":true},{"title":"M3 * 14 (1 thousand)","offer_id":46709890023601,"sku":"SCR00321-M3x14","price":5.54,"currency_code":"USD","in_stock":true},{"title":"M3 * 16 (1000 pcs)","offer_id":46709890056369,"sku":"SCR00321-M3x16","price":6.66,"currency_code":"USD","in_stock":true},{"title":"M3 * 18 (1000 pcs)","offer_id":46709890089137,"sku":"SCR00321-M3x18","price":7.76,"currency_code":"USD","in_stock":true},{"title":"M3 * 20 (1000 pieces)","offer_id":46709890121905,"sku":"SCR00321-M3x20","price":7.76,"currency_code":"USD","in_stock":true},{"title":"M4 * 6 (1000 pcs)","offer_id":46709890154673,"sku":"SCR00321-M4x6","price":7.2,"currency_code":"USD","in_stock":true},{"title":"M4 * 8 (1000 pcs)","offer_id":46709890187441,"sku":"SCR00321-M4x8","price":8.32,"currency_code":"USD","in_stock":true},{"title":"M4 * 10 (1000 pieces)","offer_id":46709890220209,"sku":"SCR00321-M4x10","price":9.42,"currency_code":"USD","in_stock":true},{"title":"M4 * 12 (1000 pieces)","offer_id":46709890252977,"sku":"SCR00321-M4x12","price":12.2,"currency_code":"USD","in_stock":true},{"title":"M4 * 14 (1000 pieces)","offer_id":46709890285745,"sku":"SCR00321-M4x14","price":12.2,"currency_code":"USD","in_stock":true},{"title":"M4 * 16 (1000 pcs)","offer_id":46709890318513,"sku":"SCR00321-M4x16","price":13.3,"currency_code":"USD","in_stock":true},{"title":"M4 * 18 (1000 pcs)","offer_id":46709890351281,"sku":"SCR00321-M4x18","price":14.42,"currency_code":"USD","in_stock":true},{"title":"M4 * 20 (1000 pieces)","offer_id":46709890384049,"sku":"SCR00321-M4x20","price":16.62,"currency_code":"USD","in_stock":true},{"title":"M4 * 22 (1000 pieces)","offer_id":46709890416817,"sku":"SCR00321-M4x22","price":18.56,"currency_code":"USD","in_stock":true},{"title":"M4 * 25 (1000 pieces)","offer_id":46709890449585,"sku":"SCR00321-M4x25","price":21.9,"currency_code":"USD","in_stock":true},{"title":"M4 * 30 (1000 pieces)","offer_id":46709890482353,"sku":"SCR00321-M4x30","price":22.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0675\/7466\/1297\/files\/017f5dbe3a7d6550e8372e7999aab323.jpg?v=1773456522","url":"https:\/\/vichokhardware.com\/products\/km-plus-hard-cross-groove-countersunk-head-machine-screw-quenching-hair-black-flat-head-bolt-screw-m2-m2-5-m3","provider":"Vichok Hardware","version":"1.0","type":"link"}