{"title":"#20 Diameter Screws","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cp data-start=\"51\" data-end=\"370\"\u003eWelcome to the “20-Diameter Screws” collection at Old West Iron. This category organizes our screws by \u003cstrong data-start=\"154\" data-end=\"187\"\u003eshank (major-thread) diameter\u003c\/strong\u003e — specifically screws sized #20 — not by head size or head style. A #20 screw has a major thread diameter of about \u003cstrong data-start=\"303\" data-end=\"331\"\u003e0.320 inches (5\/16 inch)\u003c\/strong\u003e. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"372\" data-end=\"649\"\u003eThese #20 screws represent heavy-duty fasteners — thick and strong enough for demanding jobs involving thick wood, large timbers, structural framing, decks, exterior lumber, and other load-bearing or rugged construction where maximum holding power and durability are essential.\u003c\/p\u003e\n\u003chr data-start=\"651\" data-end=\"654\"\u003e\n\u003ch2 data-start=\"656\" data-end=\"662\"\u003eFAQ\u003c\/h2\u003e\n\u003cp data-start=\"664\" data-end=\"880\"\u003e\u003cstrong data-start=\"664\" data-end=\"703\"\u003eQ: What does “#20” mean on a screw?\u003c\/strong\u003e\u003cbr data-start=\"703\" data-end=\"706\"\u003eA: “#20” is the gauge size — referring to the diameter of the screw’s threads (outer\/major-thread diameter), not the head size or style. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"882\" data-end=\"1216\"\u003e\u003cstrong data-start=\"882\" data-end=\"955\"\u003eQ: Why are the screws grouped by shank diameter instead of head size?\u003c\/strong\u003e\u003cbr data-start=\"955\" data-end=\"958\"\u003eA: Because the shank diameter determines a screw’s structural strength, load-bearing capacity, and the size of pilot-holes or clearance holes required. Head size or style affects only appearance or how the screw sits, not its basic gauge or holding strength.\u003c\/p\u003e\n\u003cp data-start=\"1218\" data-end=\"1526\"\u003e\u003cstrong data-start=\"1218\" data-end=\"1279\"\u003eQ: What kinds of projects are #20 screws best suited for?\u003c\/strong\u003e\u003cbr data-start=\"1279\" data-end=\"1282\"\u003eA: #20 screws are ideal for heavy-duty applications: thick lumber framing, heavy structural assemblies, large timber constructions, decks, barns, heavy furniture, exterior woodwork, or anywhere you need maximum holding strength and reliability.\u003c\/p\u003e\n\u003cp data-start=\"1528\" data-end=\"1844\"\u003e\u003cstrong data-start=\"1528\" data-end=\"1600\"\u003eQ: Will screws under the #20 grouping come with varying head styles?\u003c\/strong\u003e\u003cbr data-start=\"1600\" data-end=\"1603\"\u003eA: Yes. Because we group by shank diameter only, screws in the #20 collection may have different head types (flat-head, round-head, decorative, etc.). Head design affects appearance or installation method — not the screw’s gauge or strength.\u003c\/p\u003e\n\u003cp data-start=\"1846\" data-end=\"2162\"\u003e\u003cstrong data-start=\"1846\" data-end=\"1906\"\u003eQ: Should I pre-drill pilot holes when using #20 screws?\u003c\/strong\u003e\u003cbr data-start=\"1906\" data-end=\"1909\"\u003eA: Yes — especially when working with dense or thick lumber. Drilling a pilot hole sized appropriately to the screw’s root (or slightly under its major-thread diameter) helps avoid splitting, ensures clean installation, and maximizes holding strength.\u003c\/p\u003e\n\u003chr data-start=\"2164\" data-end=\"2167\"\u003e\n\u003cp data-start=\"2169\" data-end=\"2385\"\u003e \u003c\/p\u003e","products":[{"product_id":"hcs-04-antique-restoration-slotted-bubble-head-screw-20","title":"#20 Antique Restoration Slotted Bubble Head Decorative Screw","description":"\u003cp\u003e\u003cb\u003e#20 Antique Slotted Bubble Head Screw\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThis antique restoration slotted head screw is a replica of the traditional screw used on antique and vintage hardware. This screw is a beautiful addition to all hardware and furniture pieces.\u003c\/p\u003e\n\u003c!-- split --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli\u003e\u003ca class=\"active\" href=\"#tab1\"\u003e Dimensions \u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#tab2\" class=\"\"\u003e Finish Description \u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\" id=\"tab1\" style=\"display: block;\"\u003e\n\u003cdiv\u003e\n\u003cul class=\"a-unordered-list a-vertical a-spacing-none\"\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003e\u003cstrong\u003eStyle:\u003c\/strong\u003e Bubble Head\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003e\u003cstrong\u003eThread:\u003c\/strong\u003e #20\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003e\u003cstrong\u003eHead Diameter:\u003c\/strong\u003e .55\"\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003e\u003cstrong\u003eHead Height:\u003c\/strong\u003e .22\"\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003e\u003cstrong\u003eDriver:\u003c\/strong\u003e Flathead\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan class=\"a-list-item\"\u003eImage shown in black oxide\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli id=\"tab2\" style=\"display: none;\" class=\"\"\u003e\n\u003cdiv\u003e\n\u003cul class=\"a-unordered-list a-vertical a-spacing-none\"\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003e\u003cb\u003eRaw:\u003c\/b\u003e Metal is left untreated. Recommended for those wanting to add their own finish or wanting a natural rust finish.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003e\u003cb\u003eBlack:\u003c\/b\u003e The item is painted flat black. We recommend this option for items with no texturing and for outdoor use.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003e\u003cb\u003eOil Rubbed Bronze:\u003c\/b\u003e A bronze wax\/sealer is rubbed on gently, leaving a bronze color to the high points of the metal where the lows will remain black. Recommended for hammered or distressed textures.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003e\u003cb\u003ePewter:\u003c\/b\u003e A pewter wax\/sealer is rubbed on gently, leaving the silver-ish peweter color on the hight points of the metal and the lows will be black. Recommended for hammered of distressed textures.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003e\u003cb\u003eAged Bronze:\u003c\/b\u003e A bronze wax\/sealer is applied to the piece and gently wiped away. This finish leaves the high points of the metal black and the low points a bronze color. Recommended for hammered or distressed items.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003e\u003cb\u003eAged Pewter:\u003c\/b\u003e A pewter wax\/sealer is applied to the piece and gently wiped away. This finish leaves the high points of the metal black and the low points a silver-ish pewter color. Recommended for hammered or distressed items.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003e\u003cb\u003eRusty Metal Patina:\u003c\/b\u003e This finish leaves a burgandy\/orange color of rust on the low points of the piece. It looks best when selected with a hammered or distressed texture\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003e\u003cb\u003eGunmetal:\u003c\/b\u003e This is an acid finish leaving hints of blues and browns. The coloring abosrbs into the metal making it more scratch resistant (Good for high use items).Not recommended for outdoor use\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003e\u003cb\u003eThis is an acid finish turning the metal blackish. The coloring abosrbs into the metal making it more scratch resistant (Good for high use items).Not recommended for outdoor use\u003c\/b\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Old West Iron","offers":[{"title":"2 3\/4\" \/ Black Oxide","offer_id":43369213132903,"sku":"HCS-04-20-2_3_4-RAWUNF","price":5.92,"currency_code":"USD","in_stock":true},{"title":"2 3\/4\" \/ Black","offer_id":43369213165671,"sku":"HCS-04-20-2_3_4-BLACK","price":6.42,"currency_code":"USD","in_stock":true},{"title":"2 3\/4\" \/ Oil Rubbed Bronze","offer_id":43369213198439,"sku":"HCS-04-20-2_3_4-OILRUB","price":6.67,"currency_code":"USD","in_stock":true},{"title":"2 3\/4\" \/ Pewter","offer_id":43369213231207,"sku":"HCS-04-20-2_3_4-PEWTER","price":6.67,"currency_code":"USD","in_stock":true},{"title":"2 3\/4\" \/ Aged Bronze","offer_id":43369213296743,"sku":"HCS-04-20-2_3_4-AGEDBR","price":6.92,"currency_code":"USD","in_stock":true},{"title":"2 3\/4\" \/ Aged Pewter","offer_id":43369213329511,"sku":"HCS-04-20-2_3_4-AGEDPE","price":6.92,"currency_code":"USD","in_stock":true},{"title":"2 3\/4\" \/ Aged Gold","offer_id":43369213362279,"sku":"HCS-04-20-2_3_4-AGEDGO","price":6.92,"currency_code":"USD","in_stock":true},{"title":"2 3\/4\" \/ Wrought Iron","offer_id":43369213395047,"sku":"HCS-04-20-2_3_4-WROUGH","price":7.17,"currency_code":"USD","in_stock":true},{"title":"2 3\/4\" \/ Natural Rust","offer_id":43369213460583,"sku":"HCS-04-20-2_3_4-NATURA","price":7.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0073\/5877\/5399\/files\/screw-bubble-head-screw-lag-rustic-decorative-designer-fancy_ccc30348-e93a-4885-abf8-7c695161cdda.jpg?v=1777408308"},{"product_id":"copy-of-20-thick-square-pyramid-head-screw","title":"#20 Thick Square Pyramid Head Decorative Screw","description":"\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eOur thick square pyramid head screw is a unique decorative aspect compatible with all our hardware and hinge straps. These screws are a great alternative to our decorative nail heads being that you can screw them in place for functioning hardware pieces. These look like the true old wrought iron screws to provide an old world look for your doors, cabinets, gates and hardware. The image with 9 finishes shows (left to Right Top to bottom): Oil Rubbed Bronze, Black, Gun Metal, Rust, Gold, Pewter, Oxidized Copper, Aged Bronze. Our #20 has a head size of 9\/16\"\u003c\/span\u003e\u003c\/p\u003e","brand":"Old West Iron","offers":[{"title":"1 1\/2 \/ Black Oxide","offer_id":43369242689639,"sku":"HCS-06-18-1_1_2-RAWUNF","price":3.07,"currency_code":"USD","in_stock":true},{"title":"1 1\/2 \/ Black","offer_id":43369242722407,"sku":"HCS-06-18-1_1_2-BLACK","price":3.57,"currency_code":"USD","in_stock":true},{"title":"1 1\/2 \/ Oil Rubbed Bronze","offer_id":43369242755175,"sku":"HCS-06-18-1_1_2-OILRUB","price":3.82,"currency_code":"USD","in_stock":true},{"title":"1 1\/2 \/ Pewter","offer_id":43369242787943,"sku":"HCS-06-18-1_1_2-PEWTER","price":3.82,"currency_code":"USD","in_stock":true},{"title":"1 1\/2 \/ Aged Bronze","offer_id":43369242853479,"sku":"HCS-06-18-1_1_2-AGEDBR","price":4.07,"currency_code":"USD","in_stock":true},{"title":"1 1\/2 \/ Aged Pewter","offer_id":43369242886247,"sku":"HCS-06-18-1_1_2-AGEDPE","price":5.32,"currency_code":"USD","in_stock":true},{"title":"1 1\/2 \/ Aged Gold","offer_id":43369242919015,"sku":"HCS-06-18-1_1_2-AGEDGO","price":4.07,"currency_code":"USD","in_stock":true},{"title":"1 1\/2 \/ Wrought Iron","offer_id":43369242951783,"sku":"HCS-06-18-1_1_2-WROUGH","price":4.32,"currency_code":"USD","in_stock":true},{"title":"1 1\/2 \/ Natural Rust","offer_id":43369243017319,"sku":"HCS-06-18-1_1_2-NATURA","price":4.57,"currency_code":"USD","in_stock":true},{"title":"2 \/ Black Oxide","offer_id":43369243050087,"sku":"HCS-06-18-2-RAWUNF","price":3.51,"currency_code":"USD","in_stock":true},{"title":"2 \/ Black","offer_id":43369243082855,"sku":"HCS-06-18-2-BLACK","price":4.01,"currency_code":"USD","in_stock":true},{"title":"2 \/ Oil Rubbed Bronze","offer_id":43369243115623,"sku":"HCS-06-18-2-OILRUB","price":4.26,"currency_code":"USD","in_stock":true},{"title":"2 \/ Pewter","offer_id":43369243148391,"sku":"HCS-06-18-2-PEWTER","price":4.26,"currency_code":"USD","in_stock":true},{"title":"2 \/ Aged Bronze","offer_id":43369243213927,"sku":"HCS-06-18-2-AGEDBR","price":4.51,"currency_code":"USD","in_stock":true},{"title":"2 \/ Aged Pewter","offer_id":43369243246695,"sku":"HCS-06-18-2-AGEDPE","price":5.76,"currency_code":"USD","in_stock":true},{"title":"2 \/ Aged Gold","offer_id":43369243279463,"sku":"HCS-06-18-2-AGEDGO","price":4.51,"currency_code":"USD","in_stock":true},{"title":"2 \/ Wrought Iron","offer_id":43369243312231,"sku":"HCS-06-18-2-WROUGH","price":4.76,"currency_code":"USD","in_stock":true},{"title":"2 \/ Natural Rust","offer_id":43369243377767,"sku":"HCS-06-18-2-NATURA","price":5.01,"currency_code":"USD","in_stock":true},{"title":"2 1\/2 \/ Black Oxide","offer_id":43369243410535,"sku":"HCS-06-20-2_1_2-RAWUNF","price":5.75,"currency_code":"USD","in_stock":true},{"title":"2 1\/2 \/ Black","offer_id":43369243443303,"sku":"HCS-06-20-2_1_2-BLACK","price":6.25,"currency_code":"USD","in_stock":true},{"title":"2 1\/2 \/ Oil Rubbed Bronze","offer_id":43369243476071,"sku":"HCS-06-20-2_1_2-OILRUB","price":6.5,"currency_code":"USD","in_stock":true},{"title":"2 1\/2 \/ Pewter","offer_id":43369243508839,"sku":"HCS-06-20-2_1_2-PEWTER","price":6.5,"currency_code":"USD","in_stock":true},{"title":"2 1\/2 \/ Aged Bronze","offer_id":43369243574375,"sku":"HCS-06-20-2_1_2-AGEDBR","price":6.75,"currency_code":"USD","in_stock":true},{"title":"2 1\/2 \/ Aged Pewter","offer_id":43369243607143,"sku":"HCS-06-20-2_1_2-AGEDPE","price":8.0,"currency_code":"USD","in_stock":true},{"title":"2 1\/2 \/ Aged Gold","offer_id":43369243639911,"sku":"HCS-06-20-2_1_2-AGEDGO","price":6.75,"currency_code":"USD","in_stock":true},{"title":"2 1\/2 \/ Wrought Iron","offer_id":43369243672679,"sku":"HCS-06-20-2_1_2-WROUGH","price":7.0,"currency_code":"USD","in_stock":true},{"title":"2 1\/2 \/ Natural Rust","offer_id":43369243738215,"sku":"HCS-06-20-2_1_2-NATURA","price":7.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0073\/5877\/5399\/files\/il_fullxfull.6464730848_3y9t_a546f7ca-5fb4-474d-8737-b4e7b629e656.webp?v=1777589199"}],"url":"https:\/\/oldwestiron.com\/pl-ca\/collections\/20-diameter-screws.oembed","provider":"Old West Iron","version":"1.0","type":"link"}