BEST F173 Steel Half Surface Hinge with Removable Pin and Plain Bearing

BEST F173 Steel Half Surface Hinge — Plain Bearing, Removable Pin

The BEST F173 is a medium-duty steel half surface hinge built for low-frequency kalamein or wood doors hung in hollow metal frames. Only the jamb leaf requires mortising, so installation is faster than a full mortise hinge while the frame side stays flush and clean. The 5-knuckle plain bearing design runs quietly without a door closer, and the removable pin lets you pull the door without disturbing the hinge leaves — a real advantage in occupied commercial spaces.

Key Features

• Half Surface Design: Jamb leaf mortises into the frame; door leaf mounts flat to the door face — no door prep required.
• 5-Knuckle Plain Bearing: Smooth, quiet swing for low-frequency applications; no ball bearings to seize or require lubrication.
• Removable Pin: Door can be lifted off without removing either leaf — simplifies maintenance, painting, and access work.
• Steel Construction: Medium-duty rating for commercial interior doors in office, institutional, and multi-family applications.
• Square Corners: Clean architectural profile; compatible with standard hollow metal frame prep.
• Hardware Included: Ships with machine screws and grommet nuts for immediate installation.

Technical Specifications

• Hinge Type: Half Surface
• Bearing Type: Plain Bearing
• Knuckles: 5
• Hinge Pin: Removable
• Corner Style: Square
• Duty Level: Medium Duty
• Material: Steel
• Application: Kalamein or wood doors with hollow metal frames
• Available Sizes: 4.5" x 4.5"
• Available Finishes: 600 (Primed for Painting), 652 (Satin Chrome / Steel)

Installation Overview

1. Verify door thickness and frame compatibility against manufacturer specifications before ordering.
2. Use manufacturer templates to mark mounting hole locations on the door face and jamb mortise area.
3. Mortise the jamb to accept the jamb leaf; mount the door leaf flat to the door surface.
4. Secure both leaves with the provided machine screws and grommet nuts to manufacturer torque specs.
5. Insert the removable pin and check door swing and clearances throughout the full range of motion.
6. Refer to the linked installation guide and hinge size chart for complete details.

Typical Applications

• Commercial office buildings and tenant improvement
• Educational and healthcare facilities
• Government and municipal buildings
• Multi-family and mixed-use residential
• Retail and hospitality interiors
• Industrial and warehouse interior doors