Kawneer KW450351 Threshold Scr...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$126.92
$96.40
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Kawneer KW450351 Threshold Screw Spline for 42" Offset Pivot Single Acting Single Door, Open Back Frames, Right-Handed

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Model: KW450351

In Stock (leaves warehouse same day if ordered before 3pm ET)

$126.92
$96.40
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Kawneer KW450351 Threshold Screw Spline for 42" Offset Pivot Single Acting Single Door, Open Back Frames, Right-Handed

The Kawneer KW450351 is a genuine service replacement part, a Threshold Screw Spline engineered specifically for 42" offset pivot, single acting, single door configurations installed in open back frames. Designed for right-handed door applications, this component ensures precise fit and reliable function within compatible Kawneer door systems. As an OEM-sourced Kawneer service part, it provides the exact tolerances and material consistency required for commercial-grade performance.

Key Features

  • Precise Door Compatibility: Engineered specifically for 42" offset pivot single acting single door assemblies to ensure accurate fit and function.
  • Open Back Frame Design: Configured exclusively for open back frame installations, maintaining proper threshold alignment and structural integrity.
  • Right-Handed Configuration: Factory-specified right-handed orientation eliminates guesswork during replacement and ensures drop-in compatibility.
  • Genuine Kawneer Service Part: Sourced as an authentic Kawneer OEM replacement component, meeting original design specifications and quality standards.
  • Commercial-Grade Construction: Built to the performance demands of commercial door systems where consistent threshold engagement is essential.
  • Direct Replacement Fit: Designed as a like-for-like replacement part, minimizing installation time and reducing the need for field modification.

Technical Specifications

  • Department: Door Hardware
  • Product Category: Mechanical Locks
  • Product Group: Parts and Accessories
  • Subcategory: Parts and Accessories
  • Product Subgroup: Parts and Accessories
  • Product Type: Exit Device Parts
  • Parts and Accessories Type: Replacement Parts
  • Commercial/Residential: Commercial
  • Product Model: KW450351
  • Features: Kawneer Service Parts

Typical Applications

  • Commercial Office Building Entrances
  • Retail Storefront Door Systems
  • Educational Facility Main Entry Doors
  • Healthcare Facility Entrance Assemblies
  • Government and Municipal Building Entry Points
  • Industrial Facility Access Doors with Offset Pivot Hardware
  • Multi-Tenant Commercial Property Entryways

Why Kawneer KW450351?

Kawneer service parts like the KW450351 Threshold Screw Spline are manufactured to original equipment specifications, ensuring reliable, long-term performance in demanding commercial door applications. Selecting a genuine Kawneer replacement component preserves the design integrity of the original installation and reduces the risk of misalignment or premature wear. For facilities maintaining Kawneer door systems, this OEM part delivers the exact fit and quality expected from a trusted commercial architectural products manufacturer.

Product Specs

Department:
Door Hardware
Product Category:
Mechanical Locks
Product Group:
Parts and Accessories
Subcategory:
Parts and Accessories
Product Subgroup:
Parts and Accessories
Product Type:
Exit Device Parts
Parts and Accessories Type:
Replacement Parts
Commercial/Residential:
Commercial
Product Model:
KW450351
Features:
Kawneer Service Parts

Kawneer KW450351 – Frequently Asked Questions

1) What is the Kawneer KW450351 threshold screw spline and what does it do?
The KW450351 is a genuine Kawneer service replacement part, a threshold screw spline used in the threshold of a 42 inch offset pivot, single acting, single door installed in an open back frame. The spline is the member the threshold fasteners screw into, holding the threshold in correct alignment at the sill. It is sold as an OEM like-for-like replacement, so it drops into the original condition without field modification.
2) Is the KW450351 handed, and will it work on a left-hand door?
Handing matters here. The KW450351 is the right-handed version. If the opening is left-handed, this is the wrong part and you need the left-hand equivalent for the same 42 inch offset pivot single door in an open back frame. Stand outside the opening and check which side the hinges (pivots) fall on before ordering.
3) Will this Kawneer threshold spline fit a pair of doors or a double-acting door?
No. The KW450351 is specified for a single acting, single door only. A pair of doors or a double acting (swings both ways) offset pivot opening uses a different threshold configuration, and this spline will not correspond to that layout. Match the part to a single leaf, single acting, 42 inch offset pivot door.
4) What does open back frame mean, and does the KW450351 work in a closed back frame?
Open back frame refers to the Kawneer frame profile where the back of the member is open rather than fully enclosed, which changes how the threshold is anchored at the jambs. The KW450351 is configured exclusively for open back frame installations. If your entrance uses a different frame condition, this spline is not the matching service part for it.
5) Do I get the whole threshold with the KW450351, or just the spline?
Just the spline. The KW450351 is a single service component, the threshold screw spline itself. If the threshold extrusion, sill sweep, or pivot hardware is also worn, those are separate Kawneer service parts and need to be ordered alongside it.
6) Is the KW450351 suitable for a commercial storefront entrance, or is it a residential part?
It is a commercial part. Kawneer offset pivot entrances with this threshold arrangement are used on office building entries, retail storefronts, school and healthcare main entries, government buildings and multi-tenant commercial entryways. Property managers and MRO buyers maintaining Kawneer aluminum entrances use this as the exact-fit replacement rather than fabricating a substitute.
7) Can I substitute a generic threshold spline instead of the Kawneer OEM part?
Kawneer entrance thresholds are built to the manufacturer's own extrusion tolerances, and the KW450351 is sourced as the authentic OEM component to those specifications. A generic spline risks misalignment at the sill and premature wear on the pivot door. For a Kawneer offset pivot entrance, the OEM service part is what maintains the original install geometry.
How fast can I get the Kawneer KW450351 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Kawneer KW450351 come with a warranty?
Absolutely. The Kawneer KW450351 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Kawneer KW450351?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Kawneer KW450351 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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