{"product_id":"mini-compression-springs-0-2mm-wire-304-stainless-steel","title":"10pcs Mini Springs Compression Wire Dia. 0.2mm OD 2\/2.5\/3mm,304 Stainless Steel","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eMini Compression Springs — Precision 304 Stainless Steel for Tight-Space Applications\u003c\/h2\u003e\n\u003cp\u003eWhen a repair calls for a spring so small it nearly disappears between your fingers, finding the right size is half the battle. Hobbyists, electronics technicians, watchmakers, and model builders all face the same frustration: standard hardware springs are simply too large for compact mechanisms, delicate assemblies, and miniature devices. These mini compression springs are engineered specifically for those tight-space applications where every tenth of a millimeter matters.\u003c\/p\u003e\n\u003cp\u003eEach pack contains 10 identical springs made from 304 stainless steel wire with a diameter of 0.2 mm (approx. 0.008 in). The outer diameter (OD) is available in 2 mm, 2.5 mm, or 3 mm (approx. 0.079 in, 0.098 in, or 0.118 in), and free lengths range from 5 mm to 50 mm (approx. 0.20 in to 1.97 in) depending on the variant selected. The open-coil compression design provides consistent linear resistance across the full compression range.\u003c\/p\u003e\n\u003cp\u003eThese mini compression springs are well suited for restoring tension in pen mechanisms and retractable tools, providing return force in miniature switches and push-button assemblies, and acting as spacers or cushioning elements in precision model construction and electronics prototyping. Their small footprint makes them a reliable choice wherever a standard spring would simply not fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e⚙️\u003c\/span\u003e \u003cstrong\u003eCompatibility Note:\u003c\/strong\u003e Verify your housing inner diameter before ordering. OD 2 mm springs fit bores of approximately 2.1 mm or larger; OD 2.5 mm requires approximately 2.6 mm; OD 3 mm requires approximately 3.1 mm or larger.\u003c\/div\u003e\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Mini Compression Springs\u003c\/h2\u003e\n\u003cul class=\"hdiy-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔩\u003c\/span\u003e \u003cstrong\u003e304 Stainless Steel Construction\u003c\/strong\u003e — Resists oxidation and corrosion in humid or mildly acidic environments, maintaining spring integrity over repeated compression cycles without surface degradation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📏\u003c\/span\u003e \u003cstrong\u003eUltra-Fine 0.2 mm Wire Diameter\u003c\/strong\u003e — The slender wire gauge allows these springs to fit inside bores and housings where thicker springs cannot, making them indispensable for miniature mechanisms and precision instruments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎯\u003c\/span\u003e \u003cstrong\u003eThree OD Options in One Listing\u003c\/strong\u003e — Choose from 2 mm, 2.5 mm, or 3 mm outer diameters to match your specific bore size, eliminating the need to source from multiple suppliers for a single project.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e \u003cstrong\u003eWide Length Range (5–50 mm)\u003c\/strong\u003e — Ten free-length options per OD size let you dial in the exact spring rate and travel distance your application requires, from very short return springs to longer tension members.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e \u003cstrong\u003eOpen-Coil Compression Design\u003c\/strong\u003e — The evenly spaced coils compress smoothly and return consistently, providing predictable linear force behavior suitable for repeatable mechanical actions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e \u003cstrong\u003e10-Piece Pack for Spares and Prototyping\u003c\/strong\u003e — Having extras on hand means you can test multiple lengths during prototyping or keep replacements ready for maintenance without reordering after every repair.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Mini Compression Springs\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003e304 Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWire Diameter\u003c\/th\u003e\n\u003ctd\u003e0.2 mm (approx. 0.008 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOuter Diameter (OD)\u003c\/th\u003e\n\u003ctd\u003e2 mm \/ 2.5 mm \/ 3 mm — See variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFree Length\u003c\/th\u003e\n\u003ctd\u003e5 mm – 50 mm — See variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSpring Type\u003c\/th\u003e\n\u003ctd\u003eCompression (open coil)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eQuantity per Pack\u003c\/th\u003e\n\u003ctd\u003e10 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSurface Finish\u003c\/th\u003e\n\u003ctd\u003eNatural (uncoated stainless)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSpring Rate\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEnd Type\u003c\/th\u003e\n\u003ctd\u003eOpen ends\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCoil Direction\u003c\/th\u003e\n\u003ctd\u003eRight-hand\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-faq\"\u003e\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose the right outer diameter for my application?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eMeasure the inner diameter of the bore or housing where the spring will sit. The spring's OD should be slightly smaller than the bore — typically 0.1–0.2 mm of clearance is sufficient. For example, if your bore is 2.2 mm, the 2 mm OD spring is the correct choice. If the spring is meant to slide over a shaft instead, the shaft diameter should be smaller than the spring's inner diameter (ID), which is approximately OD minus twice the wire diameter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat free length should I select?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe free length is the uncompressed length of the spring. You should choose a free length that is longer than the maximum gap you need to fill when the spring is at rest, and short enough that the spring does not bottom out (reach solid height) before the mechanism completes its travel. If you are unsure, ordering two or three adjacent lengths for testing is a practical approach given the 10-piece pack format.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these springs corrosion-resistant enough for outdoor or humid environments?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003e304 stainless steel offers good resistance to atmospheric corrosion, moisture, and mild chemical exposure. It is suitable for indoor electronics, humid workshop environments, and light outdoor use where the springs are not in prolonged contact with saltwater or strong acids. For marine or highly corrosive environments, 316 stainless steel would be a more appropriate choice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan these springs be used in electrical or electronic assemblies?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eYes. 304 stainless steel is non-magnetic (in its annealed state) and has moderate electrical conductivity, making these springs suitable for use as contact elements in low-current switch assemblies, battery contacts in small devices, and similar applications. For high-current or highly conductive applications, a beryllium copper or phosphor bronze spring would be more appropriate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I determine if the spring strength is suitable for my use?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eSpring rate (force per unit of compression) depends on wire diameter, OD, and number of active coils. With a 0.2 mm wire diameter, these are light-duty springs designed for low-force applications such as pen mechanisms, small switches, and model assemblies. They are not intended for heavy-load mechanical systems. If you need a specific spring rate, contact us with your load and deflection requirements so we can help identify the best variant.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between the OD 2 mm, 2.5 mm, and 3 mm options?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eThe outer diameter determines how wide the spring is. A larger OD generally means a slightly stiffer spring (more coil material per turn) and requires a wider bore to fit. The 2 mm OD is the most compact and fits the tightest spaces; the 3 mm OD provides a bit more lateral stability and is easier to handle during assembly. All three share the same 0.2 mm wire diameter, so the force differences between sizes are modest — the primary selection factor is the bore or shaft size of your application.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre the springs sold individually or in packs?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\n\u003cp\u003eEach listing is sold as a pack of 10 identical springs. All 10 pieces in a single order share the same wire diameter (0.2 mm), outer diameter, and free length as specified by the variant you select. If you need multiple sizes, simply add each desired variant to your cart separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hdiy-cta\"\u003e🛒 Select your Wire Dia. × OD × Length above, then add to cart.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HomeDIYer","offers":[{"title":"0.2*2*5 mm","offer_id":52449147224338,"sku":"YH319-0","price":9.59,"currency_code":"USD","in_stock":true},{"title":"0.2*2*10 mm","offer_id":52449147257106,"sku":"YH319-3","price":9.59,"currency_code":"USD","in_stock":true},{"title":"0.2*2*15 mm","offer_id":52449147289874,"sku":"YH319-6","price":9.59,"currency_code":"USD","in_stock":true},{"title":"0.2*2*20 mm","offer_id":52449147322642,"sku":"YH319-9","price":9.59,"currency_code":"USD","in_stock":true},{"title":"0.2*2*25 mm","offer_id":52449147355410,"sku":"YH319-12","price":9.59,"currency_code":"USD","in_stock":true},{"title":"0.2*2*30 mm","offer_id":52449147388178,"sku":"YH319-15","price":9.59,"currency_code":"USD","in_stock":true},{"title":"0.2*2*35 mm","offer_id":52449147420946,"sku":"YH319-18","price":9.59,"currency_code":"USD","in_stock":true},{"title":"0.2*2*40 mm","offer_id":52449147453714,"sku":"YH319-21","price":9.59,"currency_code":"USD","in_stock":true},{"title":"0.2*2*45 mm","offer_id":52449147486482,"sku":"YH319-24","price":9.59,"currency_code":"USD","in_stock":true},{"title":"0.2*2*50 mm","offer_id":52449147519250,"sku":"YH319-27","price":9.59,"currency_code":"USD","in_stock":true},{"title":"0.2*2.5*5 mm","offer_id":52449147552018,"sku":"YH319-30","price":9.59,"currency_code":"USD","in_stock":true},{"title":"0.2*2.5*10 mm","offer_id":52449147584786,"sku":"YH319-33","price":9.59,"currency_code":"USD","in_stock":true},{"title":"0.2*2.5*15 mm","offer_id":52449147617554,"sku":"YH319-36","price":9.59,"currency_code":"USD","in_stock":true},{"title":"0.2*2.5*20 mm","offer_id":52449147650322,"sku":"YH319-39","price":9.59,"currency_code":"USD","in_stock":true},{"title":"0.2*2.5*25 mm","offer_id":52449147683090,"sku":"YH319-42","price":9.59,"currency_code":"USD","in_stock":true},{"title":"0.2*2.5*30 mm","offer_id":52449147715858,"sku":"YH319-45","price":9.59,"currency_code":"USD","in_stock":true},{"title":"0.2*2.5*35 mm","offer_id":52449147748626,"sku":"YH319-48","price":9.59,"currency_code":"USD","in_stock":true},{"title":"0.2*2.5*40 mm","offer_id":52449147781394,"sku":"YH319-51","price":9.59,"currency_code":"USD","in_stock":true},{"title":"0.2*2.5*45 mm","offer_id":52449147814162,"sku":"YH319-54","price":9.59,"currency_code":"USD","in_stock":true},{"title":"0.2*2.5*50 mm","offer_id":52449147846930,"sku":"YH319-57","price":9.59,"currency_code":"USD","in_stock":true},{"title":"0.2*3*5 mm","offer_id":52449147879698,"sku":"YH319-60","price":9.59,"currency_code":"USD","in_stock":true},{"title":"0.2*3*10 mm","offer_id":52449147912466,"sku":"YH319-63","price":9.59,"currency_code":"USD","in_stock":true},{"title":"0.2*3*15 mm","offer_id":52449147945234,"sku":"YH319-66","price":9.59,"currency_code":"USD","in_stock":true},{"title":"0.2*3*20 mm","offer_id":52449147978002,"sku":"YH319-69","price":9.59,"currency_code":"USD","in_stock":true},{"title":"0.2*3*25 mm","offer_id":52449148010770,"sku":"YH319-72","price":9.59,"currency_code":"USD","in_stock":true},{"title":"0.2*3*30 mm","offer_id":52449148043538,"sku":"YH319-75","price":9.59,"currency_code":"USD","in_stock":true},{"title":"0.2*3*35 mm","offer_id":52449148076306,"sku":"YH319-78","price":9.59,"currency_code":"USD","in_stock":true},{"title":"0.2*3*40 mm","offer_id":52449148109074,"sku":"YH319-81","price":9.59,"currency_code":"USD","in_stock":true},{"title":"0.2*3*45 mm","offer_id":52449148141842,"sku":"YH319-84","price":9.59,"currency_code":"USD","in_stock":true},{"title":"0.2*3*50 mm","offer_id":52449148174610,"sku":"YH319-87","price":9.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Main-02_acde5369-6901-4934-92f6-1a6033fdf85d.jpg?v=1783500809","url":"https:\/\/homediyer.com\/products\/mini-compression-springs-0-2mm-wire-304-stainless-steel","provider":"HomeDIYer","version":"1.0","type":"link"}