Don-Jo HWBB94545 Heavy Weight Ball Bearing Hinge | 4-1/2" x 4-1/2" | 630 Satin Stainless (US32D)
The Don-Jo HWBB94545 is a heavy weight ball bearing hinge built for demanding commercial door applications. Sized at 4-1/2" x 4-1/2" and manufactured from stainless steel at a 0.18 gauge, this full mortise butt hinge is engineered specifically for heavy doors where standard-weight hardware falls short. The 630 satin stainless (US32D) finish delivers a low-sheen, corrosion-resistant surface well suited to high-traffic and exterior-adjacent openings. Rated to ANSI A5111, it meets the template drilling pattern required by most commercial door and frame manufacturers, making it a reliable specification-grade choice for new construction and retrofit projects alike.
Non-Removable Pin — Standard on Every HWBB
Every Don-Jo HWBB94545 ships with a non-removable pin (NRP) as a factory-standard feature — no upcharge, no special order required.
- Built-in security: The non-removable pin prevents the hinge pin from being driven out on the exposed side of the door, a critical safeguard for outswing commercial door security in schools, healthcare facilities, and institutional openings.
- Included as standard: Unlike many competing lines where NRP is a priced adder, all Don-Jo heavy weight ball bearing hinges ship NRP from the factory, simplifying your specification.
Ball Bearing Construction for High-Frequency Use
The HWBB94545 incorporates ball bearing knuckles that reduce friction and support smooth, consistent operation on heavy doors throughout their service life.
- Heavy duty designation: Don-Jo classifies this hinge under its heavy weight series, purpose-built for heavy doors that place elevated stress on hinge barrels and knuckles.
- Reduced wear: Ball bearing hinges outperform plain-bearing counterparts in high-cycle commercial openings, making the HWBB94545 the right call for high-frequency door hardware specifications.
- 5-knuckle full mortise design: The standard 5-knuckle butt hinge configuration installs into mortised door edge and frame prep, consistent with commercial hollow metal door and wood door frame requirements.
Stainless Steel Construction and 630 Finish
The HWBB94545 is manufactured from stainless steel, finished in 630 satin stainless (US32D) for lasting performance in moisture-prone or corrosion-sensitive environments.
- Material durability: Stainless steel construction resists oxidation and surface degradation, making this hinge a strong fit for exterior vestibule doors, healthcare corridors, and coastal commercial applications.
- Finish coordination: The 630 / US32D satin stainless designation is a widely specified architectural finish that coordinates with stainless locksets, exit devices, and door closers across a project.
- ANSI A5111 template: Drilling conforms to the ANSI A5111 hinge template, ensuring compatibility with standard commercial door prep and interchangeability with other ANSI-pattern full mortise hinges.
Technical Details
| Manufacturer | Don-Jo Manufacturing |
| Model Number | HWBB94545 |
| Product Type | Heavy Weight Ball Bearing Hinge |
| Size | 4-1/2" x 4-1/2" |
| Gauge | 0.18 |
| Material | Stainless Steel |
| Finish | 630 Satin Stainless (US32D) |
| ANSI Template | A5111 |
| Non-Removable Pin (NRP) | Standard — included on all HWBB series |
| Application | For Heavy Doors |
| Handing | Non-handed |
| Shelf Pack | 24 |
The Don-Jo HWBB94545 is a non-stock item that ships directly from Don-Jo Manufacturing. Please allow 3–10 business days for order processing and shipment. Contact us to confirm quantity availability or to place a specification order.
Ordering & Lead Time
Non-stock, ships from Don-Jo. Lead time: 3-10 business days.
| Brand | Don-Jo |
| General - US Finishes | US32D - Satin Stainless Steel/ 630 |
| Hinge Type | Full Mortise |
| Hinge Mounting | Full Mortise |
| Hinge Height | 4.5" Hi |
| Hinge Width | 4.5" Wi |
| Hinge Grade/Thickness | Heavy Wt .180 to .190 |
| Hinge Knuckle | 5 Knuckles |
| Base Material | Stainless Steel |
| Hinge Options | NRP (Non Removable Pin) |
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