{"product_id":"bsw-knurled-thumb-screws-double-end-thread-aluminum","title":"BSW 3\/8 1\/4 Knurled Thumb Screws Aluminum Double End Thread Hand Grip Knob Bolts","description":"\u003cdiv class=\"hdiy-desc\"\u003e\n\n\u003cdiv class=\"hdiy-overview\"\u003e\n\u003ch2\u003eBSW Knurled Thumb Screws with Double End Thread — Tool-Free Fastening for Makers \u0026amp; DIYers\u003c\/h2\u003e\n\u003cp\u003eWhen you're deep into a build and need to swap panels, adjust enclosures, or secure access covers without reaching for a wrench, standard bolts become a bottleneck. These BSW knurled thumb screws with double end thread are designed for makers, PC builders, and hardware enthusiasts who need repeatable, hand-tightened fastening that holds firm without tools.\u003c\/p\u003e\n\u003cp\u003eEach screw is machined from aluminum alloy and features a fully knurled cylindrical grip head for confident finger torque. The double end thread design exposes BSW (British Standard Whitworth) threads on both ends — available in 1\/4\" and 3\/8\" diameters — with shaft lengths typically ranging from 20–40 mm (approx. 0.8\"–1.6\"). Available in Black, Red, and Silver anodized finishes.\u003c\/p\u003e\n\u003cp\u003eIdeal for PC case panel retention, aluminum extrusion frame assemblies, electronics enclosure access doors, and rapid-iteration prototyping rigs where frequent disassembly is part of the workflow. The knurled thumb screw double end thread format is a go-to fastener for custom rack builds and maker lab fixtures.\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 BSW (British Standard Whitworth) thread standard. Verify your mating nut or threaded insert matches the BSW thread form before ordering. Not interchangeable with UNC\/UNF or metric threads.\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-features\"\u003e\n\u003ch2\u003e✅ Key Features of These Knurled Thumb Screws Double End Thread\u003c\/h2\u003e\n\u003cul class=\"hdiy-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e✋\u003c\/span\u003e \u003cstrong\u003eHand-Tightenable Knurled Grip\u003c\/strong\u003e — Fully knurled cylindrical head provides secure finger grip for tool-free installation and removal, even in tight spaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🔄\u003c\/span\u003e \u003cstrong\u003eDouble End Thread Design\u003c\/strong\u003e — Exposed BSW threads on both ends allow the screw to mate with nuts or threaded inserts from either direction, adding assembly flexibility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e⚙️\u003c\/span\u003e \u003cstrong\u003eAluminum Alloy Construction\u003c\/strong\u003e — Lightweight yet rigid material keeps overall assembly weight low — a practical choice for mobile rigs, enclosures, and portable builds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e🎨\u003c\/span\u003e \u003cstrong\u003eThree Anodized Finish Options\u003c\/strong\u003e — Black, Red, and Silver finishes let you match or accent your build's color scheme with a durable surface treatment that resists wear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📐\u003c\/span\u003e \u003cstrong\u003eMultiple Thread Sizes\u003c\/strong\u003e — Available in 1\/4\"×1\/4\", 3\/8\"×1\/4\", and 3\/8\"×3\/8\" thread combinations to suit different panel thicknesses and structural requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"hdiy-icon\"\u003e📦\u003c\/span\u003e \u003cstrong\u003eFlexible Pack Quantities\u003c\/strong\u003e — Order as a single piece to test fit, or choose 5-pack or 10-pack bundles for full builds and spares stock.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-table-wrap\"\u003e\n\u003ch2\u003e📐 Technical Specifications — Knurled Thumb Screws Double End Thread\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eAluminum alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Standard\u003c\/th\u003e\n\u003ctd\u003eBSW (British Standard Whitworth)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Options\u003c\/th\u003e\n\u003ctd\u003e1\/4\"×1\/4\", 3\/8\"×1\/4\", 3\/8\"×3\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHead Style\u003c\/th\u003e\n\u003ctd\u003eKnurled cylindrical thumb grip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eThread Configuration\u003c\/th\u003e\n\u003ctd\u003eDouble end (threads on both ends)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish \/ Colour\u003c\/th\u003e\n\u003ctd\u003eBlack anodized, Red anodized, Silver anodized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShaft Length\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHead Diameter\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight (per piece)\u003c\/th\u003e\n\u003ctd\u003eSee variant options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack Quantity\u003c\/th\u003e\n\u003ctd\u003e1 pcs \/ 5 pcs \/ 10 pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDrive Method\u003c\/th\u003e\n\u003ctd\u003eHand-tightened (no tool required)\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\n\u003cdetails\u003e\n\u003csummary\u003eWhat does \"double end thread\" mean on these thumb screws?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eDouble end thread means the screw has exposed BSW threads on both ends of the shaft, rather than a threaded shank on one end only. This allows the fastener to engage a nut or threaded insert from either side, which is useful in through-panel assemblies or when you need to stack components on both ends of the same fastener.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is BSW thread and is it compatible with standard metric or UNC bolts?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eBSW stands for British Standard Whitworth, a thread form with a 55° thread angle. It is not interchangeable with metric (60° angle) or UNC\/UNF threads. Before ordering, confirm that your mating nuts, threaded inserts, or tapped holes are also BSW specification. Mixing thread standards will result in cross-threading or failure to engage.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow do I choose between the 1\/4\" and 3\/8\" thread sizes?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eChoose based on the thread size of your mating hardware. The 1\/4\" BSW thread is suited for lighter-duty panel retention and thinner material applications, while the 3\/8\" BSW thread provides greater clamping force and is better for heavier panels or structural connections. The \"Thread\" option on this listing shows both the grip-end and stud-end diameters (e.g., 3\/8\"×1\/4\" means 3\/8\" on one end, 1\/4\" on the other).\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWill aluminum thumb screws hold securely, or do they loosen under vibration?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eAluminum thumb screws are designed for hand-tightened, low-vibration applications such as PC case panels, enclosure lids, and access covers. For environments with significant vibration (e.g., motor mounts or vehicle-mounted equipment), consider adding a nylon insert nut or thread-locking compound on the mating side to maintain engagement. They are not intended as structural load-bearing fasteners.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eDo the anodized finishes (Black, Red, Silver) affect corrosion resistance?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eAnodizing creates an oxide layer on the aluminum surface that improves corrosion resistance compared to bare aluminum. All three finish options — Black, Red, and Silver — provide this protective layer. For indoor builds and electronics enclosures, the anodized finish is sufficient. For outdoor or high-humidity environments, additional protective measures may be advisable.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eShould I order 1 pcs, 5 pcs, or 10 pcs?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eOrder 1 pcs if you want to verify fit and thread engagement before committing to a full build. Choose 5 pcs for a typical panel or enclosure project with a few access points. The 10 pcs pack offers the best per-unit value and is recommended for full rack builds, multi-panel enclosures, or if you want spares on hand for future projects.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCan these be used in PC case builds for panel retention?\u003c\/summary\u003e\n\u003cdiv class=\"hdiy-faq-body\"\u003e\u003cp\u003eYes. The knurled thumb screw format is a common choice for PC case side panels, tempered glass retention brackets, and removable drive bay covers. The hand-tightenable grip means you can open and reseat panels repeatedly without tools. Confirm that your case's threaded standoffs or panel holes match the BSW thread specification before purchasing.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"hdiy-cta\"\u003e\n🛒 Select your Thread size, colour, 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\": \"What does \\\"double end thread\\\" mean on these thumb screws?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Double end thread means the screw has exposed BSW threads on both ends of the shaft, rather than a threaded shank on one end only. This allows the fastener to engage a nut or threaded insert from either side, which is useful in through-panel assemblies or when you need to stack components on both ends of the same fastener.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is BSW thread and is it compatible with standard metric or UNC bolts?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"BSW stands for British Standard Whitworth, a thread form with a 55° thread angle. It is not interchangeable with metric (60° angle) or UNC\/UNF threads. Before ordering, confirm that your mating nuts, threaded inserts, or tapped holes are also BSW specification.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"How do I choose between the 1\/4\\\" and 3\/8\\\" thread sizes?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Choose based on the thread size of your mating hardware. The 1\/4\\\" BSW thread suits lighter-duty panel retention, while the 3\/8\\\" BSW thread provides greater clamping force for heavier panels or structural connections.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Will aluminum thumb screws hold securely, or do they loosen under vibration?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Aluminum thumb screws are designed for hand-tightened, low-vibration applications such as PC case panels and enclosure lids. For vibration-prone environments, consider adding a nylon insert nut or thread-locking compound on the mating side.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do the anodized finishes (Black, Red, Silver) affect corrosion resistance?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Anodizing creates an oxide layer that improves corrosion resistance compared to bare aluminum. All three finish options provide this protective layer, suitable for indoor builds and electronics enclosures.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Should I order 1 pcs, 5 pcs, or 10 pcs?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Order 1 pcs to verify fit before committing. Choose 5 pcs for a typical panel project. The 10 pcs pack offers the best per-unit value for full rack builds or multi-panel enclosures.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Can these be used in PC case builds for panel retention?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Yes. The knurled thumb screw format is a common choice for PC case side panels and removable covers. Confirm your case's threaded standoffs match the BSW thread specification before purchasing.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"HomeDIYer","offers":[{"title":"3\/8 x1\/4 \/ Black \/ 1pcs","offer_id":52292064215314,"sku":"FXLGLBZSJ094806x1","price":3.2,"currency_code":"USD","in_stock":true},{"title":"3\/8 x1\/4 \/ Red \/ 1pcs","offer_id":52292064248082,"sku":"FXLGLBZSJ094807x1","price":3.2,"currency_code":"USD","in_stock":true},{"title":"3\/8 x1\/4 \/ Silver \/ 1pcs","offer_id":52292064280850,"sku":"FXLGLBZSJ094813x1","price":3.06,"currency_code":"USD","in_stock":true},{"title":"1\/4 x1\/4 \/ Black \/ 1pcs","offer_id":52292064313618,"sku":"FXLGLBZSJ094809x1","price":3.2,"currency_code":"USD","in_stock":true},{"title":"1\/4 x1\/4 \/ Red \/ 1pcs","offer_id":52292064346386,"sku":"FXLGLBZSJ094810x1","price":3.2,"currency_code":"USD","in_stock":true},{"title":"1\/4 x1\/4 \/ Silver \/ 1pcs","offer_id":52292064379154,"sku":"FXLGLBZSJ094811x1","price":3.2,"currency_code":"USD","in_stock":true},{"title":"3\/8 x3\/8 \/ Silver \/ 1pcs","offer_id":52292064411922,"sku":"FXLGLBZSJ094812x1","price":3.06,"currency_code":"USD","in_stock":true},{"title":"3\/8 x3\/8 \/ Red \/ 1pcs","offer_id":52292064444690,"sku":"FXLGLBZSJ094808x1","price":3.2,"currency_code":"USD","in_stock":true},{"title":"3\/8 x3\/8 \/ Black \/ 1pcs","offer_id":52292064477458,"sku":"FXLGLBZSJ094814x1","price":3.2,"currency_code":"USD","in_stock":true},{"title":"3\/8 x1\/4 \/ Black \/ 5pcs","offer_id":52292064510226,"sku":"FXLGLBZSJ094806x5","price":9.86,"currency_code":"USD","in_stock":true},{"title":"3\/8 x1\/4 \/ Red \/ 5pcs","offer_id":52292064542994,"sku":"FXLGLBZSJ094807x5","price":9.86,"currency_code":"USD","in_stock":true},{"title":"3\/8 x1\/4 \/ Silver \/ 5pcs","offer_id":52292064575762,"sku":"FXLGLBZSJ094813x5","price":9.18,"currency_code":"USD","in_stock":true},{"title":"1\/4 x1\/4 \/ Black \/ 5pcs","offer_id":52292064608530,"sku":"FXLGLBZSJ094809x5","price":9.86,"currency_code":"USD","in_stock":true},{"title":"1\/4 x1\/4 \/ Red \/ 5pcs","offer_id":52292064641298,"sku":"FXLGLBZSJ094810x5","price":9.86,"currency_code":"USD","in_stock":true},{"title":"1\/4 x1\/4 \/ Silver \/ 5pcs","offer_id":52292064674066,"sku":"FXLGLBZSJ094811x5","price":9.18,"currency_code":"USD","in_stock":true},{"title":"3\/8 x3\/8 \/ Silver \/ 5pcs","offer_id":52292064706834,"sku":"FXLGLBZSJ094812x5","price":9.45,"currency_code":"USD","in_stock":true},{"title":"3\/8 x3\/8 \/ Red \/ 5pcs","offer_id":52292064739602,"sku":"FXLGLBZSJ094808x5","price":10.13,"currency_code":"USD","in_stock":true},{"title":"3\/8 x3\/8 \/ Black \/ 5pcs","offer_id":52292064772370,"sku":"FXLGLBZSJ094814x5","price":10.13,"currency_code":"USD","in_stock":true},{"title":"3\/8 x1\/4 \/ Black \/ 10pcs","offer_id":52292064805138,"sku":"FXLGLBZSJ094806x10","price":18.89,"currency_code":"USD","in_stock":true},{"title":"3\/8 x1\/4 \/ Red \/ 10pcs","offer_id":52292064837906,"sku":"FXLGLBZSJ094807x10","price":18.89,"currency_code":"USD","in_stock":true},{"title":"3\/8 x1\/4 \/ Silver \/ 10pcs","offer_id":52292064870674,"sku":"FXLGLBZSJ094813x10","price":17.53,"currency_code":"USD","in_stock":true},{"title":"1\/4 x1\/4 \/ Black \/ 10pcs","offer_id":52292064903442,"sku":"FXLGLBZSJ094809x10","price":18.89,"currency_code":"USD","in_stock":true},{"title":"1\/4 x1\/4 \/ Red \/ 10pcs","offer_id":52292064936210,"sku":"FXLGLBZSJ094810x10","price":18.89,"currency_code":"USD","in_stock":true},{"title":"1\/4 x1\/4 \/ Silver \/ 10pcs","offer_id":52292064968978,"sku":"FXLGLBZSJ094811x10","price":17.53,"currency_code":"USD","in_stock":true},{"title":"3\/8 x3\/8 \/ Silver \/ 10pcs","offer_id":52292065001746,"sku":"FXLGLBZSJ094812x10","price":18.21,"currency_code":"USD","in_stock":true},{"title":"3\/8 x3\/8 \/ Red \/ 10pcs","offer_id":52292065034514,"sku":"FXLGLBZSJ094808x10","price":19.57,"currency_code":"USD","in_stock":true},{"title":"3\/8 x3\/8 \/ Black \/ 10pcs","offer_id":52292065067282,"sku":"FXLGLBZSJ094814x10","price":19.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/8936\/1682\/files\/Picture2of8_5e6a25d0-f2be-4e4e-b47a-6db4eae25d5d.jpg?v=1782026608","url":"https:\/\/homediyer.com\/de\/products\/bsw-knurled-thumb-screws-double-end-thread-aluminum","provider":"HomeDIYer","version":"1.0","type":"link"}