Cable tray screw specifications dimensions and prices

Cable tray screws are typically M6 bolts, available in stainless steel grades 304 and 316, used for securing tray sections, couplers, and supports.Specifications and DimensionsScrew Type: Most cable tray systems, including Armorduct and OBO, use M6 roofing bolts for couplers, fishplates, and framework connections .Material:304 Stainless Steel: High resistance to rust, suitable for indoor and general industrial environments .316 Stainless Steel: Contains 2–3% molybdenum for enhanced corrosion resistance, ideal for outdoor, coastal, or chemical processing environments .Tray Compatibility: Screws are used across light, medium, heavy, and extra heavy duty trays, including Legrand Swifts systems, which also offer fast-fit alternatives like Swiftclip for quicker installation .Dimensions: Standard M6 bolts have a 6 mm diameter, with lengths varying depending on tray thickness and accessory requirements. Typical lengths range from 16 mm to 50 mm for standard tray connections, but exact length should match the tray and coupler thickness .Finish: Galvanized, powder-coated, or stainless steel finishes are available to match environmental and load requirements .Installation NotesLight duty trays under 150 mm width may not require couplers, using swage joints instead .Fast-fit systems like Swiftclip reduce the number of screws needed, often requiring only two clips per joint, which speeds up installation and reduces labor costs .Screws should be tightened to manufacturer-recommended torque to ensure structural integrity without damaging the tray or cables .PricingPrices vary by material, length, and supplier.304 Stainless Steel M6 bolts: Typically range from $0.50 to $1.50 per piece depending on quantity and finish.316 Stainless Steel M6 bolts: Higher corrosion resistance increases cost, generally $1.50 to $3.00 per piece.Bulk purchases for industrial projects often reduce per-unit cost. Fast-fit systems like Swiftclip may have a slightly higher upfront cost but reduce labor and installation time .SummaryFor most cable tray installations:Use M6 bolts for standard screw-on trays.Choose 304 SS for indoor/general use and 316 SS for corrosive or outdoor environments.Consider fast-fit alternatives like Swiftclip to save installation time.Verify bolt length and finish according to tray type and environmental conditions. This ensures secure, durable, and compliant cable tray installations while optimizing cost and labor efficiency.