The Round Handrail Adapter is a precision stainless steel mounting fitting engineered to connect round handrail tubing to posts, flat surfaces, or mounting brackets across modern railing installations. Functioning as a structural transition component within architectural balustrades, this insert adapter enables effortless, secure fastening for staircases, balconies, walkways, and protective barriers. The design features a 5 mm exposed collar height that rests neatly outside the tube face upon installation, delivering a clean, flush aesthetic. The central 8.5 mm clearance hole is specifically dimensioned to house standard M8 bolts or fixing screws for a rigid mechanical connection. Available in multiple tube size specifications (D) including 33.7 × 2.0mm, 42.4 × 2.0mm, 42.4 × 2.6mm, 48.3 × 2.0mm, and 48.3 × 2.6mm, these essential handrail fittings are manufactured from high-grade AISI 304 and AISI 316 stainless steel with fine satin brushed or high-luster mirror polished surface finishes.
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Category |
Part NO. | D |
Material |
Surface |
Place of Production |
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Handrail Adaptors |
D001.33.20 |
33.7×2.0mm |
Stainless Steel 304 / 316 |
Satin or Mirror polished |
Shandong, China |
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Handrail Adaptors |
D001.42.20 |
42.4×2.0mm |
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Handrail Adaptors |
D001.42.26 |
42.4×2.6mm |
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Handrail Adapters |
D001.48.20 |
48.3×2.0mm |
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Handrail Adapters |
D001.48.26 |
48.3×2.6mm |
1. Tube Thickness: 2.0mm or 2.6mm
2. Manufacturing Process: Investment Casting + Precision Machining+Polishing
3. Application Scenario: Hotel, Villa, Apartment, Office Building, Hospital, School, Mall, Sports Venues, Leisure Facilities, Supermarket, Park, Bathroom, Outdoor, Exterior, Entry, Hall, Staircase, Gym
4. Use Place: Bridge Railings / Handrails, Deck Railings / Handrails, Porch Railings / Handrails, Stair Railings / Handrails
5. Design Style: Contemporary, Modern, European, Craftsman
6. Certificate: ISO9001:2015
7. Engineering Solution Capability: Graphic Design, 3d Model Design, Total Solution For Projects
8. Certificates: Material Certificates, Dimension Inspection Certificate
9. Lead Time : 60days batch production after handrail adapter samples approved
10. Warranty Service: 1 Year
11. After-sales Service: Online Technical Support, Return And Replacement
Q1: What is the main function of a Round Handrail Adapter?
A: A Round Handrail Adapter acts as an internal sleeve connector that slides into the end of a round handrail tube. It allows the tube to be firmly bolted to support posts, wall brackets, or flat mounting surfaces while providing a clean, professional finish with its 5 mm visible shoulder collar.
Q2: What are the exact technical dimensions of this adapter?
A: According to the product specifications:Central Hole Diameter: 8.5 mm (engineered for standard M8 bolts/screws)Exposed Collar Profile: 5 mm thicknessTube Diameter Options (D): Fits round tubes sized 33.7 × 2.0mm, 42.4 × 2.0mm, 42.4 × 2.6mm, 48.3 × 2.0mm, and 48.3 × 2.6mm.
Q3: Where is this handrail fitting typically used?
A: This adapter is widely used in residential, commercial, and industrial railing projects, including interior and exterior stairways, balcony balustrades, pedestrian walkways, and safety barrier assemblies requiring secure tube connections.
Q4: Should I choose Stainless Steel 304 or 316 for my project?
A: Material selection depends on environmental exposure:
Stainless Steel 304 (Satin/Mirror): Ideal for climate-controlled indoor applications, residential staircases, and commercial building foyers.
Stainless Steel 316 (Satin/Mirror): Recommended for outdoor decks, walkways, coastal installations, and high-humidity environments due to its enhanced resistance against weather and chemical corrosion.
Inquiry Handrail Adapter in your own design, please contact us.
