Pemko OS-HS Series Heavy Duty ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$458.00
$239.50
Pemko OS-HS Series Heavy Duty Offset Half Surface Continuous Geared Hinge with 180� Swing Capability

Pemko OS-HS Series Heavy Duty Offset Half Surface Continuous Geared Hinge with 180-Degree Swing Capability

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Model: COS83HS-HD1
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$458.00
$239.50
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Pemko OS-HS Series Heavy Duty Offset Half Surface Continuous Geared Hinge with 180-Degree Swing Capability

Professional Continuous Hinge Solution for Maximum Door Clearance

The Pemko OS-HS Series Heavy Duty Offset Half Surface Continuous Geared Hinge provides exceptional clearance when doors open to 90 degrees, allowing doors to swing flat against walls. This Grade 1 aluminum continuous hinge accommodates door thicknesses from 1-3/4"; to 2-1/4"; and door widths up to 4 feet, with custom lengths available up to 10 feet. The heavy-duty design features 3"; bearing spacing and supports up to 180-Degree swing operation for demanding commercial applications.

Professional Features & Benefits

  • Door Thickness Compatibility: Accommodates door thicknesses from 1-3/4"; to 2-1/4"; with door widths up to 4 feet for versatile installation options.
  • Heavy-Duty Load Rating: Grade 1 aluminum construction rated at 1.31 lbs per foot with 3"; bearing spacing for exceptional durability in commercial applications.
  • Extended Swing Range: Supports up to 180-Degree swing operation with minimum 3/16"; hinge clearance for maximum door positioning flexibility.
  • Maximum Door Clearance Design: Offset half surface configuration allows doors to swing flat against walls, preventing damage from carts, dollies, and pallets.
  • Custom Length Availability: Available in lengths up to 10 feet with minimum hinge length of 79"; for specialized applications and openings.
  • Fire-Rated Certification: UL 10C certified with special FirePins required only on 3-Hour (A-Label) assemblies for code compliance.
  • Lifetime Warranty: Guaranteed for the life of the opening against defects in material for heavy-duty models providing long-term reliability and protection.
  • Versatile Installation: Non-handed design with self-drilling Teks and thru bolt fastener options for cost-effective installation on hollow metal doors and frames.

Technical Specifications

  • Department: Door Hardware
  • Grade: Grade 1
  • Product Category: Door Hinges and Pivots
  • Product Group: Door Hinges and Pivots
  • Product Model: OS-HS
  • Product Subgroup: Continuous Hinges
  • Product Substrate: Aluminum
  • Product Type: Continuous Hinges
  • Series: OS-HS Series
  • Subcategory: Continuous Hinges

Professional Applications

  • Commercial Office Buildings
  • Healthcare Institutions with Cart Traffic
  • Educational Facilities
  • Industrial and Warehouse Facilities
  • Retail Establishments
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Choose Pemko Quality?

Pemko OS-HS Series continuous hinges deliver professional-grade reliability with Grade 1 aluminum construction and heavy-duty geared design rated at 1.31 lbs per foot. Guaranteed for the life of the opening against defects in material for heavy-duty models, these hinges meet UL 10C and ANSI/BHMA A156.26 standards. Engineered for demanding commercial applications where maximum door clearance and dependable performance are essential.

Product Specs

Subcategory:
Continuous Hinges
Grade:
Grade 1
Product Group:
Door Hinges and Pivots
Product Subgroup:
Continuous Hinges
Product Type:
Continuous Hinges
Product Model:
OS-HS
Product Category:
Door Hinges and Pivots
Department:
Door Hardware
Product Substrate:
Aluminum
Series:
OS-HS Series

Pemko COS83HS-HD1 – Frequently Asked Questions

1) Will the Pemko OS-HS continuous hinge work on a 2-inch thick door?
Yes. The OS-HS offset half surface geared hinge covers door thicknesses from 1-3/4 to 2-1/4 inches, so a 2 inch leaf sits in the middle of the range. Door width is limited to 4 feet. It is non-handed, so the same hinge works on a left or right hand opening.
2) Is the Pemko OS-HS hinge fire rated?
UL 10C certified. On 3-Hour (A-Label) assemblies the special FirePins are required; below that they are not. The OS-HS also meets ANSI/BHMA A156.26 and is a Grade 1 hinge.
3) How much clearance do I need beside the frame for a Pemko OS-HS hinge to reach 180 degrees?
Minimum 3/16 inch hinge clearance is what the OS-HS needs to run out to a full 180 degrees. If a wall return, adjacent frame or applied stop crowds the hinge side tighter than that, the door will bind before it lays flat and you want a different mounting type.
4) Is a full surface continuous hinge the same thing as the Pemko OS-HS offset half surface?
No. A full surface hinge applies to the face of both the door and the frame; a half surface hinge like the OS-HS mortises into one leaf and surface applies to the other. The Design Hardware FSHD is a full surface heavy duty continuous geared hinge, the BEST 664HD is a full surface heavy duty continuous geared hinge with a 90 minute UL fire rating, and the NGP HD5700 is a full surface geared hinge with a 1/16 inch door inset for 1-3/4 inch to 2-1/4 inch doors. If the opening was prepped for a full surface hinge, the OS-HS is not a drop-in for it.
5) The door frame has no room for a surface applied hinge on the face. What continuous hinge works instead of an offset half surface?
Go to a full mortise geared continuous hinge, which sets into the door and frame edge rather than applying to the face. The Design Hardware FMHD is a heavy duty full mortise continuous geared hinge, the ABH A120HD is a heavy duty aluminum full mortise continuous gear hinge with Easy Install Technology, and the NGP HD1100A is a concealed continuous geared hinge in an 83 inch length. The Pemko OS-HS is an offset half surface hinge, so it mounts to the face of the door and frame and needs that face clearance.
6) I need the door to clear the frame completely for wheelchair and gurney traffic. Does the OS-HS do that or is there a swing clear hinge?
The Pemko OS-HS is an offset half surface hinge that lets the door swing flat against the wall at 90 degrees and supports up to 180 degree swing, which keeps carts, dollies and pallets off the door face. For an opening that needs the leaf swung clear of the frame opening itself, the ABH A210HD is a full surface swing clear heavy duty aluminum continuous gear hinge rated at 450 lbs capacity. Those are two different clearance strategies: offset half surface clears the wall, swing clear recovers the frame opening width.
7) Which continuous geared hinges carry a Grade 1 rating for a facility standard?
The Pemko OS-HS is Grade 1 aluminum construction and meets UL 10C and ANSI/BHMA A156.26. Among the geared alternatives, the NGP HD1100A concealed continuous geared hinge is Grade 3 and is 10C fire rated 90 minute on hollow metal. If the facility standard is written to Grade 1, the OS-HS meets it directly at 83, 85, 95 and 120 inch lengths in clear anodized or dark bronze anodized aluminum.
8) The opening is a 3-hour A-label fire door. Does the Pemko OS-HS work or do I need a different continuous hinge?
The OS-HS is UL 10C certified, with special FirePins required only on 3-Hour A-Label assemblies, so it can go on that opening with the FirePins added. Several of the alternatives are rated to 90 minutes on hollow metal rather than 3 hours: the NGP HD5400A half surface, the NGP HD5700 full surface, and the BEST 664HD full surface geared hinge each carry a 90 minute rating. Check the label hours on the door before substituting one of those in.
9) How do you fasten a Pemko OS-HS hinge to a hollow metal door and frame?
Two fastener options ship for the OS-HS: self-drilling Teks, which is the faster install on hollow metal, and thru bolts, which is what you want on a high-abuse opening where pull-out is a concern. Because it is a half surface hinge, the frame leaf goes into the frame and the door leaf lands on the face of the door, so no morticing of the door edge is needed.
10) Is a medium duty continuous hinge enough, or do I need the heavy duty Pemko OS-HS?
Duty level tracks the traffic, not the door. The OS-HS is a heavy duty Grade 1 hinge built for cart and pallet traffic in healthcare, warehouse and institutional openings. For a lighter interior opening, a medium duty option such as the BEST 641 steel full mortise with hospital tips covers it. Where a door cycles hard all day, the heavy duty gear and 3 inch bearing spacing is the one that lasts.
11) What are the alternatives to a Pemko OS-HS half surface geared hinge?
Same family, different mounting: the NGP HD5400A is another half surface geared hinge in aluminum alloy at 83 inches. If you want the door to clear the opening entirely for wheelchair and gurney traffic, the ABH A210HD is a full surface swing clear rated at 450 lbs. For a concealed look the NGP HD1100A is a concealed geared hinge at 83 inches. And the Design Hardware FSOHD is a full surface offset heavy duty geared hinge, close in intent to the OS-HS but full surface rather than half.
12) Will a continuous geared hinge fix a door that keeps sagging and dragging on the floor?
That is the usual reason to move off butt hinges. Butts carry the whole leaf at three or four points and the top one works loose first. A geared continuous hinge such as the OS-HS supports the leaf over its full height with bearings every 3 inches, which is what stops the sag from coming back. On a heavy traffic opening the offset half surface version buys you the wall clearance at the same time, so the door is not getting hit by carts on top of everything else.
13) I need a continuous hinge with a pinch protection or safety edge. Does the Pemko OS-HS have that?
The OS-HS is an offset half surface geared continuous hinge whose clearance design is aimed at letting the door swing flat against the wall to prevent damage from carts, dollies and pallets. If the requirement is a safety design at the hinge edge, the ABH A135HD is a heavy duty aluminum continuous gear hinge with a safety design. That is a different objective from the OS-HS offset geometry, so confirm which one the spec is calling for before substituting.
14) Does the Pemko OS-HS hinge come in dark bronze to match my existing storefront doors?
Two anodized finishes are offered: clear anodized aluminum and dark bronze anodized aluminum. Both are available across all four stock lengths (83, 85, 95 and 120 inches), so a bronze opening and a clear one can be standardized on the same hinge across a building.
How fast can I get the Pemko COS83HS-HD1 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 Pemko COS83HS-HD1 come with a warranty?
Absolutely. The Pemko COS83HS-HD1 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 Pemko COS83HS-HD1?
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 Pemko COS83HS-HD1 from ZenSupply?
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