Buyers ordering door hardware in bulk should verify door type, hardware function, material, dimensions, finish, compatibility, project standards, sample approval, packaging, and inspection requirements.
A 90° shower door hinge is commonly used where a glass door connects to a wall or a fixed glass panel at a right angle. A 180° shower door hinge is used where the door and adjacent fixed glass are arranged in the same straight line.
Concealed door hinges are better when the architectural design requires a clean, uninterrupted door surface. Visible hinges are usually easier to inspect, maintain, replace, and specify for demanding commercial openings.
Satin stainless steel hardware is generally easier to maintain in busy buildings because its directional grain makes fingerprints, light water marks, and minor handling marks less visible. Polished stainless steel creates a brighter, mirror-like appearance, but it normally requires more frequent wiping to keep the reflective surface clean.
Door handles become loose, stiff, or misaligned because of worn fasteners, spindle movement, incorrect installation, door sag, latch friction, damaged springs, overtightened fixings, dirt, corrosion, or incompatible components.
SS304 and SS316 are both austenitic stainless steel grades used for door handles, hinges, pull handles, bolts, glass fittings, handrails, and other architectural hardware. SS304 is the practical standard for many indoor and general outdoor applications.
A mortise lock is a complete lock mechanism installed inside a pocket cut into the edge of a door. A door latch is the component that holds the door closed and retracts when the handle turns. The latch may be a separate tubular unit or one working part inside a mortise lock case.
Lever handles and pull handles serve different functions on commercial doors. A lever handle rotates a spindle to retract a latch or operate a lock case. A pull handle provides a fixed gripping point for opening the door but normally does not control the latch by itself.
Common door lock problems include a key that will not turn, a latch that sticks, a deadbolt that does not align with the strike, loose handles, a spinning cylinder, a broken key, and smart-lock power or credential failures. Many faults begin with door movement or installation rather than the lock mechanism itself.
