{"product_id":"m4-m5-pan-head-screws-with-washers","title":"M4 M5 Phillips Pan Head Machine Screws with Gaskets – A2 Stainless Steel, Corrosion‑Resistant (8–20mm Lengths)","description":"\u003c!-- Part 1: Product Description HTML for Shopify --\u003e\n\u003cdiv class=\"hdiy-m4m5-washer-set\"\u003e\n\u003c!-- Product Overview Section --\u003e\n\u003ch2\u003e🔩 M4 M5 Phillips Pan Head Machine Screws with Gaskets – A2 Stainless Steel, Corrosion‑Resistant, 8–20mm Lengths\u003c\/h2\u003e\n\u003cp\u003eYou’re assembling a piece of furniture, mounting an electronic device, or repairing outdoor equipment – and you need a screw that won’t rust, plus a washer to protect the surface and prevent loosening. This set gives you A2 stainless steel pan head Phillips screws with matching flat washers (gaskets) included. The stainless steel construction resists rust in humid and outdoor environments, while the washer distributes clamping force evenly and protects your workpiece. Available in M4 and M5 diameters, with lengths from 8mm to 20mm (under head). Perfect for furniture, carpentry, electronics, and automotive repairs.\u003c\/p\u003e\n\u003c!-- Features Section --\u003e\n\u003ch2\u003e✨ Key Features – Screw + Washer Set (A2 Stainless Steel)\u003c\/h2\u003e\n\u003cul class=\"hdiy-feature-list\"\u003e\n\u003cli\u003e🔘 \u003cstrong\u003ePan head design\u003c\/strong\u003e – Low profile with a wide bearing surface. No countersinking needed – clean, neat appearance.\u003c\/li\u003e\n\u003cli\u003e🔩\u003cbr\u003e\u003cstrong\u003ePhillips drive\u003c\/strong\u003e – Standard cross recess works with common screwdrivers. Good torque transfer.\u003c\/li\u003e\n\u003cli\u003e🛡️ \u003cstrong\u003eA2 stainless steel (304)\u003c\/strong\u003e – High hardness, anti‑corrosion, anti‑rust, durable and wear‑resistant.\u003c\/li\u003e\n\u003cli\u003e🔩 \u003cstrong\u003eMatching flat washers included\u003c\/strong\u003e – Each screw comes with a stainless steel gasket to protect surfaces and distribute load.\u003c\/li\u003e\n\u003cli\u003e📏 \u003cstrong\u003eMetric sizes M4 and M5\u003c\/strong\u003e – Popular diameters for furniture, electronics, and light machinery.\u003c\/li\u003e\n\u003cli\u003e📐 \u003cstrong\u003eLengths from 8mm to 20mm (under head)\u003c\/strong\u003e – Fully threaded, deep threads with even pitch for consistent fastening.\u003c\/li\u003e\n\u003cli\u003e🏭 \u003cstrong\u003eWidely used\u003c\/strong\u003e – Furniture manufacturing, carpentry, electronic equipment, automotive repair, and DIY projects.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- Specifications Table --\u003e\n\u003ch2\u003e📏 Specifications – M4 \u0026amp; M5 Pan Head Screws + Washers\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x: auto;\" class=\"hdiy-table-wrapper\"\u003e\n\u003ctable class=\"hdiy-specs-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Diameter (M)\u003c\/th\u003e\n\u003cth\u003eThread Pitch (mm)\u003c\/th\u003e\n\u003cth\u003eTypical Lengths (mm, under head) *\u003c\/th\u003e\n\u003cth\u003eHead Style\u003c\/th\u003e\n\u003cth\u003eDrive\u003c\/th\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f5f5f5; text-align: center;\" colspan=\"6\"\u003e📐 Length measured from underside of head to tip. Fully threaded. Washer included for each screw. Select size from dropdown.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"hdiy-table-row\"\u003e\n\u003ctd class=\"dia\"\u003eM4\u003c\/td\u003e\n\u003ctd class=\"pitch\"\u003e0.7\u003c\/td\u003e\n\u003ctd class=\"len\"\u003e8, 10, 12, 16, 20\u003c\/td\u003e\n\u003ctd rowspan=\"2\"\u003ePan head\u003c\/td\u003e\n\u003ctd rowspan=\"2\"\u003ePhillips\u003c\/td\u003e\n\u003ctd rowspan=\"2\"\u003eA2 304 Stainless\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"hdiy-table-row\"\u003e\n\u003ctd class=\"dia\"\u003eM5\u003c\/td\u003e\n\u003ctd class=\"pitch\"\u003e0.8\u003c\/td\u003e\n\u003ctd class=\"len\"\u003e8, 10, 12, 16, 20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- Washer \u0026 Application Table --\u003e\n\u003ch2\u003e🛠️ Why Use Screws with Washers?\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x: auto;\" class=\"hdiy-table-wrapper\"\u003e\n\u003ctable class=\"hdiy-specs-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBenefit\u003c\/th\u003e\n\u003cth\u003eDescription\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr class=\"hdiy-table-row\"\u003e\n\u003ctd class=\"pro\"\u003eSurface protection\u003c\/td\u003e\n\u003ctd class=\"desc\"\u003eThe washer prevents the screw head from marring or scratching the workpiece surface.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"hdiy-table-row\"\u003e\n\u003ctd class=\"pro\"\u003eLoad distribution\u003c\/td\u003e\n\u003ctd class=\"desc\"\u003eSpreads clamping force over a larger area, reducing the risk of pull‑through in soft materials.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"hdiy-table-row\"\u003e\n\u003ctd class=\"pro\"\u003eVibration resistance\u003c\/td\u003e\n\u003ctd class=\"desc\"\u003eA flat washer helps maintain tension under light vibration (for heavy vibration, use a lock washer in addition).\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"hdiy-table-row\"\u003e\n\u003ctd class=\"pro\"\u003eCorrosion resistance\u003c\/td\u003e\n\u003ctd class=\"desc\"\u003eStainless steel screw + washer ensures no galvanic corrosion – perfect for outdoor or humid use.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- FAQ Section – all expanded --\u003e\n\u003ch2\u003e❓ Frequently Asked Questions – M4 M5 Pan Head Screws with Washers\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003cdiv class=\"hdiy-faq-item\"\u003e\n\u003cp class=\"hdiy-faq-question\"\u003e\u003cstrong\u003e1. How do I measure the length of a pan head screw?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"hdiy-faq-answer\"\u003eFor pan head screws, length is measured from the underside of the head (the flat bearing surface) to the tip. The head itself is NOT included. So an “M4 x 10mm” screw has a 10mm long threaded shaft under the head. All our lengths follow this standard.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq-item\"\u003e\n\u003cp class=\"hdiy-faq-question\"\u003e\u003cstrong\u003e2. Are the washers included? What type are they?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"hdiy-faq-answer\"\u003eYes – each screw comes with one matching A2 stainless steel flat washer (gasket). The washers have an inner diameter slightly larger than the screw thread, allowing free rotation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq-item\"\u003e\n\u003cp class=\"hdiy-faq-question\"\u003e\u003cstrong\u003e3. Are these screws fully threaded?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"hdiy-faq-answer\"\u003eYes – all M4 and M5 screws in this set are fully threaded from under the head to the tip, giving you maximum grip in blind holes or when using nuts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq-item\"\u003e\n\u003cp class=\"hdiy-faq-question\"\u003e\u003cstrong\u003e4. Can I use these screws outdoors? Will they rust?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"hdiy-faq-answer\"\u003eA2 stainless steel (304) is highly corrosion‑resistant and suitable for outdoor use in most environments – rain, humidity, and coastal areas. For continuous saltwater immersion, A4 (316) is better, but for general outdoor furniture, electronics, and automotive repairs, A2 is excellent.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq-item\"\u003e\n\u003cp class=\"hdiy-faq-question\"\u003e\u003cstrong\u003e5. What screwdriver do I need for M4 and M5 Phillips screws?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"hdiy-faq-answer\"\u003eFor M4, use a #1 or #2 Phillips. For M5, a #2 Phillips works best. Always use a driver that fits snugly to avoid cam‑out and head damage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq-item\"\u003e\n\u003cp class=\"hdiy-faq-question\"\u003e\u003cstrong\u003e6. Can I buy these screws without washers? Or washers without screws?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"hdiy-faq-answer\"\u003eThis listing is for screw + washer sets. We also sell screws only or washers only in other listings – please check our store.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cstyle\u003e\n  .hdiy-m4m5-washer-set {\n    max-width: 100%;\n    margin: 0;\n    padding: 0;\n    color: #1a1a1a;\n    line-height: 1.5;\n  }\n  .hdiy-m4m5-washer-set h2 {\n    font-size: 1.75rem;\n    margin: 1.5rem 0 0.75rem 0;\n    font-weight: 600;\n    border-bottom: 2px solid #eaeaea;\n    padding-bottom: 0.5rem;\n  }\n  .hdiy-m4m5-washer-set h2:first-of-type {\n    margin-top: 0;\n  }\n  .hdiy-m4m5-washer-set p {\n    margin-bottom: 1rem;\n    font-size: 1rem;\n  }\n  .hdiy-feature-list {\n    list-style: none;\n    padding-left: 0;\n    margin: 1rem 0;\n  }\n  .hdiy-feature-list li {\n    margin-bottom: 0.75rem;\n    padding-left: 0.25rem;\n    font-size: 1rem;\n    display: flex;\n    align-items: flex-start;\n    gap: 0.5rem;\n  }\n  .hdiy-feature-list li strong {\n    font-weight: 600;\n  }\n  .hdiy-table-wrapper 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