{"product_id":"m5-m6-m8-spade-head-thumb-screws-galvanized-carbon-steel","title":"M5 M6 M8 Spade-head Thumb Screws Thumb Screw - Galvanized carbon steel","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eM5 M6 M8 Galvanized Thumb Screws — Tool-Free Fastening for DIY \u0026amp; Workshop Use\u003c\/h2\u003e\n\u003cp\u003eWhen you need to repeatedly remove and reattach panels, guards, or access covers without reaching for a screwdriver, standard hex bolts slow you down. These spade-head thumb screws are designed for makers, fabricators, and workshop builders who need fast, hand-tightened fastening in tight spaces or high-frequency assembly situations.\u003c\/p\u003e\n\u003cp\u003eEach thumb screw is made from carbon steel with a hot-dipped galvanized finish, providing a zinc-rich coating that resists surface oxidation in moderately humid environments. Available in three metric thread diameters — M5 (pitch 0.8 mm \/ 0.031 in), M6 (pitch 1.0 mm \/ 0.039 in), and M8 (pitch 1.25 mm \/ 0.049 in) — with shank lengths ranging from 10 mm (0.39 in) to 100 mm (3.94 in). The spade-shaped wing head provides a wide grip surface for confident finger torque.\u003c\/p\u003e\n\u003cp\u003eTypical applications include removable enclosure panels on DIY CNC machines, jig and fixture assembly in small workshops, equipment access doors requiring frequent tool-free thumb screw removal, and light-duty clamping setups where hand-tightened metric thumb screws replace conventional fasteners.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-compat\"\u003e\n\u003cspan class=\"hdiy-compat-icon\"\u003e🔩\u003c\/span\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Standard metric threads — M5×0.8, M6×1.0, M8×1.25. Fits any tapped hole or nut matching ISO metric coarse thread specifications.\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Spade-Head Thumb Screws\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-list\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🖐️\u003c\/span\u003e\n\u003cstrong\u003eSpade Wing Head Design\u003c\/strong\u003e\n\u003cp\u003eThe wide, flat spade-shaped head gives your fingers a secure grip surface, allowing confident hand-tightening without tools — ideal for panels and covers you open regularly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🛡️\u003c\/span\u003e\n\u003cstrong\u003eHot-Dipped Galvanized Finish\u003c\/strong\u003e\n\u003cp\u003eA thick zinc coating applied by hot-dip galvanizing bonds metallurgically to the carbon steel base, delivering corrosion resistance superior to electroplated alternatives in workshop and light outdoor environments.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e\n\u003cstrong\u003eWide Size Range: M5 \/ M6 \/ M8\u003c\/strong\u003e\n\u003cp\u003eThree thread diameters with shank lengths from 10 mm to 100 mm cover the majority of metric thumb screw applications — from compact electronics enclosures to heavier structural panels.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e\n\u003cstrong\u003eISO Metric Coarse Thread\u003c\/strong\u003e\n\u003cp\u003eStandard pitches (M5×0.8 mm, M6×1.0 mm, M8×1.25 mm) ensure compatibility with any metric-tapped hole or standard hex nut, no special hardware required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e\n\u003cstrong\u003eFlexible Pack Quantities\u003c\/strong\u003e\n\u003cp\u003eAvailable in packs of 5, 20, or 50 pieces so you can stock exactly what your project needs — whether it's a one-off build or a recurring production run.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e\n\u003cstrong\u003eReusable \u0026amp; Durable Construction\u003c\/strong\u003e\n\u003cp\u003eCarbon steel construction with galvanized coating maintains thread integrity through repeated assembly and disassembly cycles, making these thumb screws a long-term workshop staple.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003e📐 Technical Specifications — Spade-Head Thumb Screws\u003c\/h2\u003e\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Standard\u003c\/th\u003e\n\u003ctd\u003eISO Metric Coarse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Diameters\u003c\/th\u003e\n\u003ctd\u003eM5, M6, M8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Pitch\u003c\/th\u003e\n\u003ctd\u003eM5: 0.8 mm | M6: 1.0 mm | M8: 1.25 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShank Length Range\u003c\/th\u003e\n\u003ctd\u003e10 mm – 100 mm (0.39 in – 3.94 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHead Style\u003c\/th\u003e\n\u003ctd\u003eSpade \/ Wing (thumb screw)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDrive Style\u003c\/th\u003e\n\u003ctd\u003eHand-tightened (no tool required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eCarbon Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eHot-Dipped Galvanized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack Quantities\u003c\/th\u003e\n\u003ctd\u003e5 pcs \/ 20 pcs \/ 50 pcs (see variant options)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHead Width\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHead Thickness\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\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 size thumb screw for my project?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eMatch the thread diameter to your tapped hole or nut: M5 for lighter panels and small enclosures, M6 for general-purpose workshop fixtures, and M8 for heavier structural panels. Then select a shank length that passes fully through your material with enough thread engagement — typically at least 1× the thread diameter for steel, 1.5× for softer materials.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these thumb screws strong enough for structural use?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThese carbon steel thumb screws are suitable for moderate clamping and panel-retention loads. They are not rated for high-tension structural joints. For applications requiring precise torque specifications or load-bearing connections, consult an engineer and consider standard hex bolts with a torque wrench.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow does hot-dipped galvanizing compare to zinc electroplating for corrosion resistance?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eHot-dipped galvanizing deposits a thicker zinc layer (typically 45–85 µm) that bonds metallurgically to the steel, offering significantly better corrosion resistance than electroplated zinc (typically 5–25 µm). These screws are well-suited for indoor workshops, garages, and light outdoor exposure, but are not recommended for continuous immersion or marine environments.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill these fit standard metric nuts and tapped holes?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. All three sizes use ISO metric coarse thread pitches (M5×0.8, M6×1.0, M8×1.25), which are the most common metric thread standards worldwide. They will thread directly into any standard metric nut or tapped hole of the matching size without adapters.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I use these thumb screws outdoors?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe hot-dipped galvanized finish provides good resistance to light outdoor exposure such as covered workshops, garages, and sheltered equipment. For prolonged direct rain exposure or coastal environments, consider adding a thread sealant or choosing stainless steel fasteners for maximum longevity.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between the 5-piece, 20-piece, and 50-piece packs?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eThe pack quantity affects the per-piece cost — larger packs offer better value for ongoing projects or production runs. The 5-piece pack suits single-project or trial purchases, the 20-piece pack covers most workshop builds, and the 50-piece pack is ideal for batch production or stocking your hardware supply.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eAre these thumb screws reusable after repeated assembly cycles?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. Carbon steel maintains thread integrity well through repeated hand-tightening and removal cycles. Avoid over-torquing beyond hand-tight, and inspect threads periodically if used in high-cycle applications. The galvanized coating may show minor wear at contact points over time, which does not affect thread function.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-cta\"\u003e\n🛒 Select your size and quantity above, then add to cart.\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I choose the right size thumb screw for my project?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Match the thread diameter to your tapped hole or nut: M5 for lighter panels and small enclosures, M6 for general-purpose workshop fixtures, and M8 for heavier structural panels. Then select a shank length that passes fully through your material with enough thread engagement — typically at least 1× the thread diameter for steel, 1.5× for softer materials.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these thumb screws strong enough for structural use?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"These carbon steel thumb screws are suitable for moderate clamping and panel-retention loads. They are not rated for high-tension structural joints. For applications requiring precise torque specifications or load-bearing connections, consult an engineer and consider standard hex bolts with a torque wrench.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How does hot-dipped galvanizing compare to zinc electroplating for corrosion resistance?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Hot-dipped galvanizing deposits a thicker zinc layer (typically 45–85 µm) that bonds metallurgically to the steel, offering significantly better corrosion resistance than electroplated zinc (typically 5–25 µm). These screws are well-suited for indoor workshops, garages, and light outdoor exposure, but are not recommended for continuous immersion or marine environments.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Will these fit standard metric nuts and tapped holes?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. All three sizes use ISO metric coarse thread pitches (M5×0.8, M6×1.0, M8×1.25), which are the most common metric thread standards worldwide. They will thread directly into any standard metric nut or tapped hole of the matching size without adapters.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can I use these thumb screws outdoors?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The hot-dipped galvanized finish provides good resistance to light outdoor exposure such as covered workshops, garages, and sheltered equipment. For prolonged direct rain exposure or coastal environments, consider adding a thread sealant or choosing stainless steel fasteners for maximum longevity.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between the 5-piece, 20-piece, and 50-piece packs?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The pack quantity affects the per-piece cost — larger packs offer better value for ongoing projects or production runs. The 5-piece pack suits single-project or trial purchases, the 20-piece pack covers most workshop builds, and the 50-piece pack is ideal for batch production or stocking your hardware supply.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Are these thumb screws reusable after repeated assembly cycles?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. Carbon steel maintains thread integrity well through repeated hand-tightening and removal cycles. Avoid over-torquing beyond hand-tight, and inspect threads periodically if used in high-cycle applications. The galvanized coating may show minor wear at contact points over time, which does not affect thread function.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"M5x10mm \/ 0.8mm \/ 50","offer_id":52300889391378,"sku":"GYLZWGY-TCWJTC68833x1","price":13.53,"currency_code":"USD","in_stock":false},{"title":"M5x12mm \/ 0.8mm \/ 50","offer_id":52300889424146,"sku":"GYLZWGY-TCWJTC68834x1","price":14.08,"currency_code":"USD","in_stock":false},{"title":"M5x16mm \/ 0.8mm \/ 50","offer_id":52300889456914,"sku":"GYLZWGY-TCWJTC68835x1","price":15.22,"currency_code":"USD","in_stock":false},{"title":"M5x20mm \/ 0.8mm \/ 20","offer_id":52300889489682,"sku":"GYLZWGY-TCWJTC68836x1","price":7.06,"currency_code":"USD","in_stock":false},{"title":"M6x10mm \/ 1.0mm \/ 20","offer_id":52300889522450,"sku":"GYLZWGY-TCWJTC68837x1","price":7.06,"currency_code":"USD","in_stock":false},{"title":"M6x12mm \/ 1.0mm \/ 20","offer_id":52300889555218,"sku":"GYLZWGY-TCWJTC68838x1","price":7.41,"currency_code":"USD","in_stock":false},{"title":"M6x16mm \/ 1.0mm \/ 20","offer_id":52300889587986,"sku":"GYLZWGY-TCWJTC68839x1","price":8.01,"currency_code":"USD","in_stock":false},{"title":"M6x20mm \/ 1.0mm \/ 20","offer_id":52300889620754,"sku":"GYLZWGY-TCWJTC68840x1","price":8.64,"currency_code":"USD","in_stock":false},{"title":"M6x25mm \/ 1.0mm \/ 20","offer_id":52300889653522,"sku":"GYLZWGY-TCWJTC68841x1","price":9.45,"currency_code":"USD","in_stock":false},{"title":"M6x30mm \/ 1.0mm \/ 20","offer_id":52300889686290,"sku":"GYLZWGY-TCWJTC68842x1","price":10.19,"currency_code":"USD","in_stock":false},{"title":"M6x40mm \/ 1.0mm \/ 5","offer_id":52300889719058,"sku":"GYLZWGY-TCWJTC68843x1","price":4.28,"currency_code":"USD","in_stock":false},{"title":"M6x50mm \/ 1.0mm \/ 5","offer_id":52300889751826,"sku":"GYLZWGY-TCWJTC68844x1","price":4.69,"currency_code":"USD","in_stock":false},{"title":"M6x60mm \/ 1.0mm \/ 5","offer_id":52300889784594,"sku":"GYLZWGY-TCWJTC68845x1","price":5.02,"currency_code":"USD","in_stock":false},{"title":"M6x70mm \/ 1.0mm \/ 5","offer_id":52300889817362,"sku":"GYLZWGY-TCWJTC68846x1","price":5.51,"currency_code":"USD","in_stock":false},{"title":"M6x80mm \/ 1.0mm \/ 5","offer_id":52300889850130,"sku":"GYLZWGY-TCWJTC68847x1","price":5.83,"currency_code":"USD","in_stock":false},{"title":"M6x90mm \/ 1.0mm \/ 5","offer_id":52300889882898,"sku":"GYLZWGY-TCWJTC68848x1","price":6.32,"currency_code":"USD","in_stock":false},{"title":"M6x100mm \/ 1.0mm \/ 5","offer_id":52300889915666,"sku":"GYLZWGY-TCWJTC68849x1","price":6.65,"currency_code":"USD","in_stock":false},{"title":"M8x50mm \/ 1.25mm \/ 5","offer_id":52300889948434,"sku":"GYLZWGY-TCWJTC68850x1","price":7.28,"currency_code":"USD","in_stock":false},{"title":"M8x60mm \/ 1.25mm \/ 5","offer_id":52300889981202,"sku":"GYLZWGY-TCWJTC68851x1","price":7.96,"currency_code":"USD","in_stock":false},{"title":"M8x70mm \/ 1.25mm \/ 5","offer_id":52300890013970,"sku":"GYLZWGY-TCWJTC68852x1","price":8.55,"currency_code":"USD","in_stock":false},{"title":"M8x80mm \/ 1.25mm \/ 5","offer_id":52300890046738,"sku":"GYLZWGY-TCWJTC68853x1","price":9.23,"currency_code":"USD","in_stock":false},{"title":"M8x90mm \/ 1.25mm \/ 5","offer_id":52300890079506,"sku":"GYLZWGY-TCWJTC68854x1","price":9.91,"currency_code":"USD","in_stock":false},{"title":"M8x100mm \/ 1.25mm \/ 5","offer_id":52300890112274,"sku":"GYLZWGY-TCWJTC68855x1","price":10.59,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture2of30_a71ef894-b059-4963-9ff8-d364b53971ef.jpg?v=1782313236","url":"https:\/\/homediyer.com\/products\/m5-m6-m8-spade-head-thumb-screws-galvanized-carbon-steel","provider":"HomeDIYer","version":"1.0","type":"link"}