The Flat Handrail Adapter is a precision-engineered stainless steel saddle fitting designed to connect flat or square top rails to round baluster posts across modern railing installations. Serving as a crucial mounting component, this adapter creates a stable, rigid transition between supporting vertical tubes and flat horizontal surfaces, ensuring structural integrity and a clean architectural appearance. Designed for easy installation, the adapter features a 5 mm vertical collar height and a central 8.5 mm clearance hole engineered to accommodate standard M8 fixing screws or bolts. The cylindrical base section (D) is available in multiple tube fitment sizes—including 33.7 × 2.0mm, 42.4 × 2.0mm, 42.4 × 2.6mm, 48.3 × 2.0mm, and 48.3 × 2.6mm—to seamlessly integrate with standard round post profiles. Manufactured from high-grade AISI 304 and AISI 316 stainless steel with fine satin brushed or high-luster mirror polished surface finishes, these heavy-duty handrail fittings deliver long-term durability and corrosion resistance for both indoor and outdoor environments.
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Category |
Part NO. | D |
Ø |
Material |
Surface |
Place of Production |
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Handrail Adaptors |
D002.33.33 |
33.7×2.0mm |
33.7mm |
Stainless Steel 304 / 316 |
Satin or Mirror polished |
Shandong, China |
|
Handrail Adaptors |
D002.33.42 |
33.7×2.0mm |
42.4mm |
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Handrail Adaptors |
D002.42.42 |
42.4×2.0mm |
42.4mm |
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|
Handrail Adaptors |
D002.42.48 |
42.4×2.0mm |
48.3mm |
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|
Handrail Adaptors |
D002.48.48 |
48.3×2.0mm |
48.3mm |
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| Handrail Adaptors |
D002.426.42 |
42.4×2.6mm |
42.4mm |
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Handrail Adaptors |
D002.426.48 |
42.4×2.6mm |
48.3mm |
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Handrail Adaptors |
D002.486.48 |
48.3×2.6mm |
48.3mm |
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 primary function of a Flat Handrail Adapter?
A: A Flat Handrail Adapter acts as a mounting bridge or saddle between a round baluster post and a flat handrail surface (such as square metal tubing or flat-bottom wooden top rails). It ensures a flat, secure surface for attaching the handrail while anchoring tightly into the round support tube.
Q2: What are the key technical specifications of this adapter?
A: Based on the product specifications:Central Hole Diameter: 8.5 mm (sized for standard M8 bolts or fixing screws)Collar Height Profile: 5 mm straight vertical lipBase Outer 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 are these handrail fittings commonly installed?
A: These adapters are widely specified in residential, commercial, and industrial railing projects, including staircases, balconies, walkways, and barrier systems where flat top rails are mounted onto round posts.
Q4: Which stainless steel material grade should I choose for my project?
A: Select your material based on environmental conditions:
Stainless Steel 304 (Satin/Mirror): Best suited for dry, climate-controlled indoor applications, residential stairwells, and commercial foyers.
Stainless Steel 316 (Satin/Mirror): Recommended for outdoor decks, exterior walkways, coastal installations, and humid environments requiring enhanced resistance against corrosion and weathering.
Inquiry Handrail Adapter in your own design, please contact us.
