Bommer Industries ceased production of the 7012 and 7112 spring pivot hinges in 2022. If you've been in commercial doors long enough, you already know what that meant. These were the hinge everyone specified for double acting doors, the ones you push through with a tray, a cart, or your shoulder, and that swing shut behind you every time without a closer arm hanging off the frame. When Bommer pulled the plug, a huge number of properties, kitchens, and public buildings were left running on hinges that were slowly failing with no factory part left to replace them.
This is the direct fit replacement. Same mounting configuration, same door capacity, same double action function, built in satin stainless steel instead of the zinc plated cast steel that's been the default for decades. If you're specifying hardware, maintaining a property, or trying to close out a job where the original spec calls for a 7012 or 7112, this is the part.
What This Hinge Actually Does
It's a double acting spring pivot hinge. The door swings both directions and returns to center on its own. No surface closer, no arm, nothing visible on the face of the door. The whole mechanism lives in a top pivot and a bottom jamb bracket, both surface mounted to the frame, with the pivot itself secured into a mortised socket at the top edge of the door and a drilled hole at the bottom for the boss.
The original 7012 shipped with non adjustable, factory set spring tension. The 7112 was field adjustable. This replacement, the DWD-B7112-630, is adjustable across the board, so it covers both. If your original was a 7012, you set the tension once during install and leave it alone.
Specs:
- Fits doors 1" to 2-1/2" thick
- Maximum door width: 36"
- Maximum door weight: 75 lbs
- Anti friction ball bearing pivot
- Non handed, works on either swing direction
- Satin stainless steel (630 finish) construction, mechanism, frame, and trim
- Sold as a complete set: pivot, door bracket, jamb bracket, top pivot assembly, mounting hardware
Why Stainless, Not Zinc Plated Steel
Most replacement hinges on the market copied the original spec exactly, zinc plated cast steel. That's a reasonable choice for an office corridor. It's a bad choice for the places this hinge actually spends most of its life. Kitchens get power washed daily. Coastal properties eat through plating in a couple of seasons. Locker rooms, pool areas, and anywhere with chlorine or heavy cleaning chemicals will strip zinc plating faster than most people expect.
Stainless steel doesn't have a coating to fail. It's the same material all the way through, so the corrosion resistance doesn't wear off with use the way plating does. If you've ever pulled a seized spring hinge off a restaurant kitchen door and found the pivot rusted solid, that's the exact failure this is built to prevent. It costs more up front than a bargain replacement. It also doesn't need replacing again in three years, which is the actual comparison that matters when you're pricing a job.
Where This Hinge Actually Gets Specified
This isn't a niche part. It shows up constantly once you know what to look for.
Restaurants and commercial kitchens. The classic application. Swinging doors between the kitchen and dining room, or between prep stations, need to open both ways for staff carrying full trays and hands, and they need to close fast enough to contain noise and heat without slamming.
Bars and saloon doors. The double action swing is the entire point of a saloon door. This hinge is what makes that look and function work at commercial scale rather than the decorative cafe door hardware sold for residential use.
Theme parks and amusement facilities. High cycle count, constant public traffic, and doors that get abused all day by staff and guests. These need hardware rated for volume, not just weight.
Universities and schools. Cafeteria doors, gym entries, and high traffic corridor doors between wings all lean on double acting hinges to keep doors moving without students propping them open.
Courthouses and government buildings. Public corridors with heavy daily foot traffic where a door needs to self close consistently for both security and fire code reasons, without a visible closer that gets kicked or vandalized.
Hospitals and healthcare facilities. Double acting doors between departments and corridors need to close reliably for infection control, and the hardware needs to survive constant sterilization and washdown without corroding.
Hotels and hospitality. Back of house doors between service corridors and guest facing areas take nonstop cart traffic from housekeeping and room service.
Retail and convenience stores. The door between the sales floor and the stockroom, the one employees push through one handed with product in the other arm, all day, every shift.
Manufacturing and office buildings. Any interior door where consistent self closing matters more than the aesthetics of a visible closer arm.
If your job falls into any of these categories and the door needs to swing both ways and shut itself, this is very likely the hinge already specified, or the one that should be.
7012 vs 7112, and What You're Actually Replacing
| Original Model | Tension | Mount Style | This Replacement |
|---|---|---|---|
| Bommer 7012 | Non adjustable, factory set | Surface mount | DWD-B7112-630, set tension once at install |
| Bommer 7112 | Field adjustable | Surface mount | DWD-B7112-630, adjustable as shipped |
One part number replaces both. That matters for anyone stocking hardware for maintenance across a portfolio of properties. You don't need to carry two SKUs and guess which original spec a given door had.
Installing It the Right Way
This is not a zero prep drop in, and any article telling you otherwise is going to get a contractor in trouble mid job. Here's what actually happens.
Top jamb bracket. Mount it to the jamb at the correct height.
Door prep. Prepare the radius on the door edge, mortise the top pivot socket into the top edge of the door, and drill the hole in the bottom of the door for the boss. Secure the pivot with the spindle centered in the socket hole.
Bottom jamb bracket. Attach it to the pivot on the door and hand tighten the nut, no wrench yet. Set the door in the opening with the top pivot pin seated and the door held tight against the top jamb bracket, mark the bracket location on the jamb, then pull the door and secure the bracket to the jamb at that mark.
Hang the door. Remove the top pivot pin, set the door with the spindle in the bottom bracket, replace the top pivot pin. With the door closed, place the washer and nut on the spindle and tighten securely. This is the step that gets rushed and causes callbacks. An under tightened nut lets the spindle spin free in the bracket, and the door stops closing correctly. Tighten it all the way.
Tension adjustment. Insert the tension rod into the tension collar, turn counterclockwise as viewed from the bottom, remove the tension pin, and reinsert it at the hole location that gives you the closing force you want. Leave the tension rod in place, only the pin comes out and back in.
One thing straight from the manufacturer instructions worth repeating here: never remove the tension pin before installation. It can cause the pivot to fail to close the door in one or both directions, and reactivating it after that requires a call to the manufacturer.
Full written instructions with the nomenclature diagram ship in the box and are posted on the product page.
Questions We Actually Get on This Part
Did Bommer really stop making these? Yes, in 2022. There's no factory replacement coming.
Can one hinge replace both the 7012 and the 7112? Yes. This is adjustable, so it covers the fixed tension 7012 and the field adjustable 7112 with one part number.
Is it handed? No. It fits either swing direction.
Will it fit without new door prep? The jamb brackets are fully surface mounted. The door itself needs the top pivot socket mortised in and a hole drilled for the boss, same as the original spec required. If your door already has an original 7012/7112 removed, that prep is usually already there and you're working with existing cutouts.
What's actually in the box? One pivot, door bracket, jamb bracket, top pivot assembly, and mounting hardware. A complete set for a single door.
What's the real advantage over a cheaper zinc plated replacement? Longevity in humid, coastal, or high wash environments. Zinc plating wears and flakes. Stainless doesn't have a coating to fail in the first place.
Ordering This for a Job
If you're specifying for new construction, replacing failed units across a property, or matching an existing spec you can't source anymore, confirm door thickness, width, and weight against the 36" and 75 lb limits before you order. For anything outside that range, or a multi door job across a property, reach out directly and we'll confirm fit before it ships, not after.