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174 - Obtuse Angle Tee

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Material/Finish: Aluminum Satin Anodized
Pipe Size: 1-1/2" IPS

Product Description

The Hollaender Interna-Rail® 174 – Obtuse Angle Tee is a precision tee fitting designed for ADA-compliant handrail systems used on stair installations. This fitting is specifically intended for use on the right side of a stairway going up, allowing the horizontal handrail to transition smoothly while maintaining a continuous, code-compliant gripping surface.

Interna-Rail® is a fully mechanical modular handrail system that delivers the clean, architectural appearance of welded rail without the need for on-site welding. The 174 Obtuse Angle Tee connects to internally riveted tubing using tubular rivets and socket head cap screws and requires a Rivet Nut Tool for proper installation. Its anodized aluminum construction provides excellent resistance to corrosion and staining, while integrated set screws create a rigid, maintenance-free joint suitable for long-term public and commercial use.

Installation Instructions 


Key Features

  • Obtuse-angle tee fitting for Interna-Rail® ADA handrail systems
  • Designed for use on the right side of stairways going up
  • Maintains a continuous gripping surface through stair transitions
  • Mechanical system provides a welded-rail appearance without welding
  • Anodized aluminum finish resists corrosion and staining
  • Set screws provide a secure, long-lasting mechanical connection
  • Requires Rivet Nut Tool for installation

Common Applications

  • ADA-required stair handrails on ascending stairways
  • Public buildings, schools, offices, and government facilities
  • Commercial and architectural railing systems
  • Interior or exterior stair installations requiring obtuse-angle transitions
  • Interna-Rail® layouts with directional stair geometry

Specs / Compatibility

  • Fitting Type: Hollaender Interna-Rail® 174 Obtuse Angle Tee
  • Orientation: Right side – stairway going up
  • Material: Anodized aluminum
  • Connection Method: Tubular rivet + socket head cap screw
  • Installation Requirement: Rivet Nut Tool required
  • Joint Retention: Mechanical set screws
  • Compliance: Supports ADA-compliant continuous handrail construction
  • System Compatibility: Interna-Rail® modular railing system

What’s Included / Hardware

  • One Hollaender Interna-Rail® 174 Obtuse Angle Tee
  • Hardware included

Care & Maintenance

The anodized aluminum finish requires minimal maintenance. Clean periodically with mild soap and water. Inspect mechanical connections to ensure fasteners remain properly seated.

Shipping & Availability

Ships via UPS or FedEx. Confirm stair orientation and Interna-Rail® layout before ordering.

Need Help?

Need help choosing the right part? Visit our Contact Us page or call to speak with a specialist.

1

Angle Material/Finish Pipe Size SKU MFR Part No Description Price Qty Unit
29 °
174 - Obtuse Angle Tee
174 - Obtuse Angle Tee

Aluminum Satin Anodized

1-1/2" IPS

58226-29

MFR No. 174-8-29

Ships within 24-48 hours, Local pickup available Spec Sheet PDF image

$

67.63

EACH

Aluminum Satin Anodized 1-1/2" IPS 58226-29 Ships within 24-48 hours, Local pickup available 174-8-29 [58226-29] 174 - Obtuse Angle Tee (29 °) Spec Sheet PDF image

$

67.63

EACH

32 °
174 - Obtuse Angle Tee
174 - Obtuse Angle Tee

Aluminum Satin Anodized

1-1/2" IPS

58226-32

MFR No. 174-8-32

Ships within 24-48 hours, Local pickup available Spec Sheet PDF image

$

67.63

EACH

Aluminum Satin Anodized 1-1/2" IPS 58226-32 Ships within 24-48 hours, Local pickup available 174-8-32 [58226-32] 174 - Obtuse Angle Tee (32 °) Spec Sheet PDF image

$

67.63

EACH

35 °
174 - Obtuse Angle Tee
174 - Obtuse Angle Tee

Aluminum Satin Anodized

1-1/2" IPS

58226-35

MFR No. 174-8-35

Ships within 24-48 hours, Local pickup available Spec Sheet PDF image

$

67.63

EACH

Aluminum Satin Anodized 1-1/2" IPS 58226-35 Ships within 24-48 hours, Local pickup available 174-8-35 [58226-35] 174 - Obtuse Angle Tee (35 °) Spec Sheet PDF image

$

67.63

EACH

38 °
174 - Obtuse Angle Tee
174 - Obtuse Angle Tee

Aluminum Satin Anodized

1-1/2" IPS

58226-38

MFR No. 174-8-38

Ships within 24-48 hours, Local pickup available Spec Sheet PDF image

$

67.63

EACH

Aluminum Satin Anodized 1-1/2" IPS 58226-38 Ships within 24-48 hours, Local pickup available 174-8-38 [58226-38] 174 - Obtuse Angle Tee (38 °) Spec Sheet PDF image

$

67.63

EACH

45 °
174 - Obtuse Angle Tee
174 - Obtuse Angle Tee

Aluminum Satin Anodized

1-1/2" IPS

58226-45

MFR No. 174-8-45

Ships within 24-48 hours, Local pickup available Spec Sheet PDF image

$

67.63

EACH

Aluminum Satin Anodized 1-1/2" IPS 58226-45 Ships within 24-48 hours, Local pickup available 174-8-45 [58226-45] 174 - Obtuse Angle Tee (45 °) Spec Sheet PDF image

$

67.63

EACH

Product Description

The Hollaender Interna-Rail® 174 – Obtuse Angle Tee is a precision tee fitting designed for ADA-compliant handrail systems used on stair installations. This fitting is specifically intended for use on the right side of a stairway going up, allowing the horizontal handrail to transition smoothly while maintaining a continuous, code-compliant gripping surface.

Interna-Rail® is a fully mechanical modular handrail system that delivers the clean, architectural appearance of welded rail without the need for on-site welding. The 174 Obtuse Angle Tee connects to internally riveted tubing using tubular rivets and socket head cap screws and requires a Rivet Nut Tool for proper installation. Its anodized aluminum construction provides excellent resistance to corrosion and staining, while integrated set screws create a rigid, maintenance-free joint suitable for long-term public and commercial use.

Installation Instructions 


Key Features

  • Obtuse-angle tee fitting for Interna-Rail® ADA handrail systems
  • Designed for use on the right side of stairways going up
  • Maintains a continuous gripping surface through stair transitions
  • Mechanical system provides a welded-rail appearance without welding
  • Anodized aluminum finish resists corrosion and staining
  • Set screws provide a secure, long-lasting mechanical connection
  • Requires Rivet Nut Tool for installation

Common Applications

  • ADA-required stair handrails on ascending stairways
  • Public buildings, schools, offices, and government facilities
  • Commercial and architectural railing systems
  • Interior or exterior stair installations requiring obtuse-angle transitions
  • Interna-Rail® layouts with directional stair geometry

Specs / Compatibility

  • Fitting Type: Hollaender Interna-Rail® 174 Obtuse Angle Tee
  • Orientation: Right side – stairway going up
  • Material: Anodized aluminum
  • Connection Method: Tubular rivet + socket head cap screw
  • Installation Requirement: Rivet Nut Tool required
  • Joint Retention: Mechanical set screws
  • Compliance: Supports ADA-compliant continuous handrail construction
  • System Compatibility: Interna-Rail® modular railing system

What’s Included / Hardware

  • One Hollaender Interna-Rail® 174 Obtuse Angle Tee
  • Hardware included

Care & Maintenance

The anodized aluminum finish requires minimal maintenance. Clean periodically with mild soap and water. Inspect mechanical connections to ensure fasteners remain properly seated.

Shipping & Availability

Ships via UPS or FedEx. Confirm stair orientation and Interna-Rail® layout before ordering.

Need Help?

Need help choosing the right part? Visit our Contact Us page or call to speak with a specialist.