The Stainless Steel Railing End Caps Dome Top (M8 internal thread) are decorative and protective press-fit terminal plugs engineered for round metal handrails and balustrade tubing. Designed for modular architectural railing systems, these dome-shaped end plugs cover exposed pipe ends, eliminate sharp edges, and prevent debris and moisture accumulation inside structural posts.
Featuring a 10 mm knurled/ribbed insertion sleeve, each plug press-fits tightly into open pipe ends, leaving a visible 6 mm contoured outer collar (lip) that sits flush against the tube rim. The center of the domed top includes an integrated M8 female thread, enabling direct mechanical attachment of mounting brackets, support stems, or decorative accessories. Available in standard tube outer diameters—∅ 33.7 mm, ∅ 42.4 mm, and ∅ 48.3 mm—these caps are precision-manufactured from high-grade stainless steel options (AISI 304, AISI 316, and Duplex SS 2205) in brushed satin or mirror-polished finishes. These premium railing fittings provide a functional seal and sophisticated terminal finish across modern Handrail Support systems.
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Category |
Part NO. |
Ø |
Material |
Surface |
Place of Production |
|
Handrail Supports |
F014.33.20 |
33.7 × 2.0mm |
AISI 304, 316 or Duplex SS 2205 |
Satin or Mirror polished |
Shandong, China |
|
Handrail Supports |
F014.42.20 |
42.4 × 2.0mm |
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|
Handrail Supports |
F014.48.20 |
48.3 × 2.0mm |
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|
Handrail Supports |
F014.42.26 |
42.4 × 2.6mm |
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|
Handrail Supports |
F014.48.26 |
48.3 × 2.6mm |
1. Tube Thickness: 2.0mm or 2.6mm
2. Manufacturing Process: Investment Casting + Precision Machining+Polishing
3. Advantage: Easier and quicker installatio; Easier cleaning and maintenance
4. Application Scenario: Hotel, Villa, Apartment, Office Building, Hospital, School, Mall, Sports Venues, Leisure Facilities, Supermarket, Warehouse, Workshop, Park, Wine Cellar, Entry, etc.
5. Use Place: Bridge Railings / Handrails, Deck Railings / Handrails, Porch Railings / Handrails, Stair Railings / Handrails
6. Certificate: ISO9001:2015
7. Engineering Solution Capability: Graphic Design, 3d Model Design, Total Solution For Projects, Others
8. Certificates: Material Certificates, Dimension Inspection Certificate
9. Lead Time : 45days for samples making +50days batch production after railing support 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 domed Stainless Steel Railing End Cap with an M8 thread?
A: It provides a protective seal and elegant dome-shaped finish for open pipe ends, while offering a central M8 tapped hole for securing support brackets or additional hardware accessories.
Q2: How is this dome-top end cap installed into a metal tube?
A: The cap features a 10 mm knurled sleeve that press-fits into the open tube end until the 6 mm outer collar rests firmly against the pipe rim.
Q3: What tube sizes are compatible with these railing end caps?
A: These caps are manufactured in standard outer diameter (∅) options of 33.7 mm, 42.4 mm, and 48.3 mm.
Q4: Which stainless steel material grade is recommended for outdoor or marine environments?
A: Select AISI 316 or Duplex SS 2205 stainless steel for outdoor, coastal, or severe marine applications to prevent chloride pitting and atmospheric corrosion.
