{"product_id":"5-16-caster-mounting-hardware-kit-single","title":"5\/16\"-18 Caster Mounting Hardware Kit — 16-Piece Pack for 1 Caster | CasterHQ","description":"\u003cdiv class=\"chq-pdp\"\u003e\n  \u003cdiv class=\"chq-answer-block\" style=\"background:#f7fbfb;border-left:4px solid #016367;padding:16px 20px;margin:0 0 20px;border-radius:6px;\"\u003e\n    \u003ch2 style=\"font-family:Rajdhani,sans-serif;font-weight:700;color:#016367;font-size:20px;margin:0 0 8px;letter-spacing:.5px;\"\u003eWhat this kit is\u003c\/h2\u003e\n    \u003cp style=\"margin:0;font-family:Montserrat,sans-serif;font-size:15px;line-height:1.55;color:#1A1A1B;\"\u003eA 16-piece, zinc-finish steel mounting kit that secures one plate-mount caster to a 5\/16\"-18 bolt-pattern equipment frame. Includes 4 carriage bolts, 4 hex thread-cutting screws, 4 SAE flat washers, and 4 nylon-insert lock nuts. Engineered for industrial cart, dolly, tool-box, and material-handling applications where a 5\/16\" bolt diameter matches the caster top plate.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003ch2 style=\"font-family:Rajdhani,sans-serif;font-weight:700;color:#1f2a30;font-size:22px;margin:24px 0 10px;\"\u003eKit Specifications\u003c\/h2\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;border:1px solid #e3e7ea;font-family:Montserrat,sans-serif;font-size:14px;color:#1A1A1B;\"\u003e\n    \u003ctbody\u003e\n\u003ctr style=\"background:#f7f9fa;\"\u003e\n\u003ctd style=\"padding:10px 12px;font-weight:700;color:#5f6b73;width:40%;border-right:1px solid #e3e7ea;\"\u003ePieces per kit\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;\"\u003e16 (4 of each component)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:10px 12px;font-weight:700;color:#5f6b73;width:40%;border-right:1px solid #e3e7ea;\"\u003eMounts\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;\"\u003e1 plate-mount caster\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f7f9fa;\"\u003e\n\u003ctd style=\"padding:10px 12px;font-weight:700;color:#5f6b73;width:40%;border-right:1px solid #e3e7ea;\"\u003eThread spec\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;\"\u003e5\/16\"-18 UNC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:10px 12px;font-weight:700;color:#5f6b73;width:40%;border-right:1px solid #e3e7ea;\"\u003eBolt length\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;\"\u003e1\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f7f9fa;\"\u003e\n\u003ctd style=\"padding:10px 12px;font-weight:700;color:#5f6b73;width:40%;border-right:1px solid #e3e7ea;\"\u003eMaterial\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;\"\u003eLow-carbon steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:10px 12px;font-weight:700;color:#5f6b73;width:40%;border-right:1px solid #e3e7ea;\"\u003eFinish\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;\"\u003eZinc plated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f7f9fa;\"\u003e\n\u003ctd style=\"padding:10px 12px;font-weight:700;color:#5f6b73;width:40%;border-right:1px solid #e3e7ea;\"\u003eBolt grade\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;\"\u003eASTM A307 Grade A (carriage bolts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:10px 12px;font-weight:700;color:#5f6b73;width:40%;border-right:1px solid #e3e7ea;\"\u003eNut type\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;\"\u003eGrade 2 nylon-insert lock nut\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f7f9fa;\"\u003e\n\u003ctd style=\"padding:10px 12px;font-weight:700;color:#5f6b73;width:40%;border-right:1px solid #e3e7ea;\"\u003eWasher type\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;\"\u003eSAE general-purpose flat washer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:10px 12px;font-weight:700;color:#5f6b73;width:40%;border-right:1px solid #e3e7ea;\"\u003eApplication\u003c\/td\u003e\n\u003ctd style=\"padding:10px 12px;\"\u003eIndoor industrial; dry environments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch2 style=\"font-family:Rajdhani,sans-serif;font-weight:700;color:#1f2a30;font-size:22px;margin:28px 0 10px;\"\u003eWhat's Included (16 pieces total)\u003c\/h2\u003e\n  \u003cul style=\"font-family:Montserrat,sans-serif;font-size:15px;line-height:1.7;color:#1A1A1B;padding-left:22px;margin:0 0 16px;\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e4 × 5\/16\"-18 × 1\" hex-slotted drive indented hex washer head Type F point thread-cutting screws\u003c\/strong\u003e, zinc finish, low-carbon steel — for self-tapping installation into thin-wall steel frames\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e4 × 5\/16\"-18 × 1\" round-head carriage bolts\u003c\/strong\u003e, zinc finish, ASTM A307 Grade A — for through-bolting to wood, fabricated steel, or pre-drilled equipment\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e4 × 5\/16\" SAE general-purpose flat washers\u003c\/strong\u003e, zinc finish, low-carbon steel — for load distribution under the nut\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e4 × 5\/16\"-18 nylon-insert lock nuts\u003c\/strong\u003e, zinc finish, Grade 2 — vibration-resistant retention\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2 style=\"font-family:Rajdhani,sans-serif;font-weight:700;color:#1f2a30;font-size:22px;margin:28px 0 10px;\"\u003eWhich casters does this kit fit?\u003c\/h2\u003e\n  \u003cp style=\"font-family:Montserrat,sans-serif;font-size:15px;line-height:1.6;color:#1A1A1B;margin:0 0 12px;\"\u003eFits any plate-mount caster with a 5\/16\" bolt-hole diameter — typically:\u003c\/p\u003e\n  \u003cul style=\"font-family:Montserrat,sans-serif;font-size:15px;line-height:1.7;color:#1A1A1B;padding-left:22px;margin:0 0 16px;\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e1-1\/4\" wide casters\u003c\/strong\u003e with 2-3\/8\" × 3-5\/8\" or 3-1\/8\" × 4-1\/8\" top plates\u003c\/li\u003e\n    \u003cli\u003eLight- to medium-duty casters rated up to ~500 lb capacity per caster\u003c\/li\u003e\n    \u003cli\u003eOffice, retail-fixture, food-service, healthcare, and light-industrial cart applications\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cp style=\"font-family:Montserrat,sans-serif;font-size:14px;line-height:1.55;color:#5f6b73;margin:0 0 16px;font-style:italic;\"\u003eFor 4\" × 4-1\/2\" plates, 4-1\/2\" × 6-1\/4\" plates, or heavier-duty casters, use our 3\/8\"-16 or 1\/2\"-13 kits instead.\u003c\/p\u003e\n\n  \u003cdiv class=\"chq-engineer-tip\" style=\"background:#fff8e6;border-left:4px solid #e8600a;padding:16px 20px;margin:20px 0;border-radius:6px;\"\u003e\n    \u003ch3 style=\"font-family:Rajdhani,sans-serif;font-weight:700;color:#e8600a;font-size:17px;margin:0 0 8px;\"\u003eEngineer Tip\u003c\/h3\u003e\n    \u003cp style=\"margin:0;font-family:Montserrat,sans-serif;font-size:14px;line-height:1.6;color:#1A1A1B;\"\u003eIf you're mounting to thin-gauge steel (≤14 ga.), the thread-cutting screws self-tap and skip the need to drill clearance holes. For wood platforms or fabricated steel ≥1\/8\" thick, use the carriage bolts with a square hole punched or drilled to 5\/16\" — the square shoulder seats and prevents bolt rotation while you tighten the lock nut.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003ch2 style=\"font-family:Rajdhani,sans-serif;font-weight:700;color:#1f2a30;font-size:22px;margin:28px 0 10px;\"\u003eCommon Applications\u003c\/h2\u003e\n  \u003cul style=\"font-family:Montserrat,sans-serif;font-size:15px;line-height:1.7;color:#1A1A1B;padding-left:22px;margin:0 0 16px;\"\u003e\n    \u003cli\u003eService carts, utility carts, and rolling tool boxes (Knaack, Jobox, Greenlee, etc.)\u003c\/li\u003e\n\u003cli\u003eOffice furniture, mailroom carts, and AV equipment racks\u003c\/li\u003e\n\u003cli\u003eFood-service prep tables and stainless utility carts (light-duty zinc — for stainless wet environments choose stainless hardware)\u003c\/li\u003e\n\u003cli\u003eRetail-fixture rolling displays and trade-show cases\u003c\/li\u003e\n\u003cli\u003eHealthcare carts and lab equipment carts\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2 style=\"font-family:Rajdhani,sans-serif;font-weight:700;color:#1f2a30;font-size:22px;margin:28px 0 10px;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n  \u003cdiv style=\"font-family:Montserrat,sans-serif;font-size:15px;line-height:1.6;color:#1A1A1B;\"\u003e\n    \u003cdiv style=\"margin:0 0 14px;\"\u003e\n\u003cstrong style=\"color:#016367;\"\u003eHow many casters does one kit mount?\u003c\/strong\u003e\u003cbr\u003eOne kit (16 pieces) mounts a single plate-mount caster. For a 64-piece set (mounts 4 casters) alternative, see our \u003ca href=\"\/products\/5-16-caster-mounting-hardware-kit-set-of-4\"\u003e64-piece set (mounts 4 casters)\u003c\/a\u003e.\u003c\/div\u003e\n    \u003cdiv style=\"margin:0 0 14px;\"\u003e\n\u003cstrong style=\"color:#016367;\"\u003eWill these bolts fit a different caster top plate size?\u003c\/strong\u003e\u003cbr\u003eThis kit is sized for 5\/16\" bolt-hole diameter, which matches caster plates listed above. For other plate sizes, choose the 5\/16\", 3\/8\", or 1\/2\" kit that matches your bolt-hole diameter.\u003c\/div\u003e\n    \u003cdiv style=\"margin:0 0 14px;\"\u003e\n\u003cstrong style=\"color:#016367;\"\u003eAre these stainless?\u003c\/strong\u003e\u003cbr\u003eNo — these are zinc-plated low-carbon steel. For washdown, food-grade, marine, or chemical environments, request stainless 304 or 316 hardware via our quote desk.\u003c\/div\u003e\n    \u003cdiv style=\"margin:0 0 14px;\"\u003e\n\u003cstrong style=\"color:#016367;\"\u003eWhat's the difference between the carriage bolts and the thread-cutting screws?\u003c\/strong\u003e\u003cbr\u003eCarriage bolts pass through a pre-drilled or punched 5\/16\" hole and secure with a nut and washer on the back side — best for wood or steel where you have access to both sides. Thread-cutting screws self-tap into thin steel and only need access from the caster side. The kit ships both so you can choose the right method per installation.\u003c\/div\u003e\n    \u003cdiv style=\"margin:0 0 14px;\"\u003e\n\u003cstrong style=\"color:#016367;\"\u003eAre these grade 5 or grade 8?\u003c\/strong\u003e\u003cbr\u003eThe carriage bolts are ASTM A307 Grade A (commercial grade, ~60 ksi tensile). For higher-load critical applications, request Grade 5 or Grade 8 via the quote desk.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n  \u003cdiv class=\"chq-cta\" style=\"background:#016367;color:#ffffff;padding:18px 22px;margin:24px 0 8px;border-radius:8px;text-align:center;\"\u003e\n    \u003cp style=\"margin:0 0 8px;font-family:Rajdhani,sans-serif;font-weight:700;font-size:18px;letter-spacing:.5px;\"\u003eNeed stainless, Grade 5\/8, or a custom thread spec?\u003c\/p\u003e\n    \u003cp style=\"margin:0 0 12px;font-family:Montserrat,sans-serif;font-size:14px;line-height:1.5;\"\u003eOur procurement team sources upgraded hardware for OEM, MRO, and aerospace builds. Same-day quote.\u003c\/p\u003e\n    \u003ca href=\"\/pages\/contact-us\" style=\"display:inline-block;background:#e8600a;color:#ffffff;padding:10px 20px;font-family:Montserrat,sans-serif;font-weight:600;font-size:14px;text-decoration:none;border-radius:4px;\"\u003eRequest a Custom Quote\u003c\/a\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How many casters does one 5\/16\\\" caster mounting hardware kit mount?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"One 16-piece 5\/16\\\"-18 caster mounting hardware kit mounts one plate-mount caster.\"}}, {\"@type\": \"Question\", \"name\": \"Will 5\/16\\\" caster bolts fit different plate sizes?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This 5\/16\\\" kit fits caster top plates designed for 5\/16\\\" bolt-hole diameters. For other plates, use the 5\/16, 3\/8, or 1\/2 kit that matches your bolt-hole spec.\"}}, {\"@type\": \"Question\", \"name\": \"Is 5\/16\\\" caster mounting hardware stainless?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Standard 5\/16\\\" caster mounting hardware is zinc-plated low-carbon steel. Stainless 304 or 316 hardware is available via custom quote for washdown, food-grade, or marine environments.\"}}, {\"@type\": \"Question\", \"name\": \"What is the difference between caster carriage bolts and thread-cutting screws?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Carriage bolts pass through a pre-drilled hole and secure with a nut and washer on the back side, ideal for wood or fabricated steel with two-sided access. Thread-cutting screws self-tap into thin-gauge steel and require access from only the caster side.\"}}]}\u003c\/script\u003e\n","brand":"CasterHQ","offers":[{"title":"Default Title","offer_id":50123449336120,"sku":"516CPMHCP4PE","price":13.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0929\/4191\/0328\/files\/5-16_Mounting_Hardware_for_Casters.png?v=1778251070","url":"https:\/\/casterhq.com\/products\/5-16-caster-mounting-hardware-kit-single","provider":"CasterHQ","version":"1.0","type":"link"}