- BHMA Grade 1
- Half Surface, Heavy Duty
- 3/32″ Door Inset
- 48″ door width maximum
- 450 lbs. door weight maximum
- Average weight per unit = 9 lbs
- Fasteners:
12-24 X 3/4″ undercut self drilling, thread-forming tek machine screws for frame and 1/4-20 sex bolts and shoulder bolts for door - Standard Lengths:
79″, 83″, 85″, 95″ and 120″ + Custom Sizes Available - Fire Rating:
- Approved for use on metal swinging type fire doors rated up to and including 90 minutes (Specifiy “FR” option for 3 hour rating)
- Approved for use on wood swinging type fire doors rated up to and including 60 minutes (Specifiy “FR” option for 90 minute rating)
- Reinforcement:
- Door Side: Not required for door weight up to 200 lbs. ABH recommends a minimum 12 gauge plate/channel for heavier doors.
- Frame Side: Not required for door weight up to 200 lbs. For doors more than 200 lbs., a 16 gauge channel is recommended.
- “PT” Electrical Power Transfer Prep (Specify Electrical Power Transfer Model, Location & Handing
- “FR” Fire Studs
- “WEDGE-HS” Adjustable Safety Wedge for Half Surface Models
- “LR-BEAR” Ligature-Resistant Bearings
- “DD” Dutch Door Prep
- “SEC” Fasteners
- “CUT” Cut to Custom Length
- “TR” Tamper-Resistant (Hospital Tip, Every Other Bearing has a Set Screw) & Security Fasteners (Specify Door & Frame Material)
- “TR-AHT-FS” Tamper-Resistant (Advanced Hospital Tip, Every Other Bearing has a Set Screw) & Security Fasteners (Specify Door & Frame Material) for Half/Full Surface
- “SC” School Cap
- “SPLICE” Spliced Hinge
- “LL” Lead-Lined Cover (Half Surface & Full Surface – Door Leaf Only)
- “SL” – Sheared Leaf
- “THICK” Special Door Thickness
- “CUSTOM HOLE” Custom hole locations
- “CUSTOM FINISH”
Cut Sheets
- BHMA GRADE 1
- A530HD & A540HD Aluminum Continuous Gear Hinges Half Surface – Cut Sheet








