{"product_id":"2-swivel-caster-5-16-18-x-5-8-threaded-stem-black-new","title":"2 Inch Caster Wheels – Swivel Threaded Stem Casters (1\/4\"-20), Black, 4-Pack – Furniture \u0026 Small Cart Replacement","description":"\u003cp\u003e\u003cstrong\u003eSpecs: 2\" polyurethane (PU) wheels with bearing raceway - smooth, quiet roll. Best on carpet, tile, and concrete floors. Load rating: 125 lbs per caster (375 lbs per set of 4 - rated on 3 casters, the industry rule for uneven floors). Light-duty swivel casters with 1\/4\"-20 x 5\/8\" threaded stem.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBrand-new 2\" swivel stem casters in black — sold in packs of 4 for $14.99 ($3.75 per caster) with free US shipping.\u003c\/strong\u003e Every quantity is one 4-pack; volume discounts apply automatically at checkout.\u003c\/p\u003e\n\u003ch3\u003eRead this before you order — it takes 30 seconds\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThis caster screws in. It does not push in.\u003c\/strong\u003e Flip your chair or cart over and pull one caster out. Look at the metal post above the wheel:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpiral threads on the post\u003c\/strong\u003e — you're in the right place. Confirm it measures 1\/4\" across.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmooth post with a small springy metal ring near the top\u003c\/strong\u003e — that's a grip-ring stem, and this caster will not fit. Don't order it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWorth knowing: most modern office chairs use a 7\/16\" grip-ring stem, not a threaded stem. Threaded stems are common on older office chairs, utility carts, garment racks, wire shelving, display stands, dollies, workbenches, and light furniture. If that's what you've got, read on.\u003c\/p\u003e\n\u003cp\u003eNot sure what you're looking at? Email us a photo of your stem next to a ruler and we'll tell you straight — including if the answer is \"this isn't the one you need.\"\u003c\/p\u003e\n\u003ch3\u003eBulk pricing (per 4-pack)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1–6 packs (4–24 casters): $14.99 per pack — $3.75 per caster\u003c\/li\u003e\n\u003cli\u003e7+ packs (28+ casters): 15% off — about $12.74 per pack ($3.19 per caster)\u003c\/li\u003e\n\u003cli\u003e25+ packs (100+ casters): 38% off — about $9.29 per pack ($2.32 per caster)\u003c\/li\u003e\n\u003cli\u003e63+ packs (252+ casters): 44% off — about $8.39 per pack ($2.10 per caster)\u003c\/li\u003e\n\u003cli\u003e125+ packs (500+ casters): contact us for a wholesale quote\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePart number: SW50-2X1\/4-20X5\/8 BLACK-4PK\u003c\/li\u003e\n\u003cli\u003eSold as: pack of 4 casters\u003c\/li\u003e\n\u003cli\u003eWheel size: 2 in \/ approx. 50 mm\u003c\/li\u003e\n\u003cli\u003eCaster type: Swivel (360° rotation)\u003c\/li\u003e\n\u003cli\u003eMounting: Threaded stem, 1\/4\"-20 thread\u003c\/li\u003e\n\u003cli\u003eThread pitch: 20 threads per inch (TPI)\u003c\/li\u003e\n\u003cli\u003eStem length: 5\/8 in\u003c\/li\u003e\n\u003cli\u003eColor: Black\u003c\/li\u003e\n\u003cli\u003eCondition: New \/ open box\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCommon uses\u003c\/h3\u003e\n\u003cp\u003eReplacing worn casters on older office chairs, utility carts, garment racks, wire shelving, display stands, dollies, and light furniture — or adding wheels to your own projects. Anywhere with a 1\/4\"-20 threaded socket.\u003c\/p\u003e\n\u003ch3\u003eA note on thread pitch\u003c\/h3\u003e\n\u003cp\u003e1\/4\"-20 means the post is 1\/4\" in diameter with 20 threads per inch. Both numbers have to match your socket. A 1\/4\"-28 stem is the same diameter but a different pitch — it will start to turn, then cross-thread and damage the socket. If it doesn't spin in smoothly with light finger pressure for the first two or three turns, stop and back it out. You've got the wrong pitch, not a caster that needs more force.\u003c\/p\u003e","brand":"Caster Supply","offers":[{"title":"4 casters per pack","offer_id":46251073110073,"sku":"SW50-2X5\/16-18X5\/8 BLACK-4PK","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0808\/8633\/3497\/files\/CD2D7469-8064-4E82-A759-A35FBAC1B760.png?v=1784038123","url":"https:\/\/castersupplyco.com\/products\/2-swivel-caster-5-16-18-x-5-8-threaded-stem-black-new","provider":"Caster Supply","version":"1.0","type":"link"}