| Number | Name | Origin | Weight | Material | MT | Function
|
| 1
| circular wedge | latch | -- | Aluminum | stamped | access a wedge to keep latch assembled in place inside door
|
| 2
| pop rivot | latch | -- | brass | molded | holds latch case
|
| 3
| turning shaft | outer doorknob | -- | steel | molded | functions key lock
|
| 4
| screws x2 | outer doorknob | -- | brass plated | cold heading, thread wooling | locks inner and outer doorknobs in place
|
| 5
| latch plate | latch | -- | brass | stamped | attaches to door jam (on door side)
|
| 6
| strike plate | latch | -- | brass | stamped and bent | attaches to door jam, allows latch to fit in hole
|
| 7
| spring | inner doorknob | -- | harden steel, nickel based alloy | wound, prehardened or hardened during fabrication | guides the lock by creating resistance in a locking shaft and keeping it aligned in a locking or unlocking position
|
| 8
| lock shaft | inner doorknob | -- | plastic and brass | two molded parts, press fitted | turns shaft into lock/unlock positions
|
| 9
| ring | inner doorknob | -- | aluminum | stamped | serves as a buffer between knob spring and spring housing
|
| 10
| inner doorknob torsional spring | inner doorknob | -- | steel | molded and wrapped | creates resistance when turning doorknob, prevents free spinning
|
| 11
| spring housing | inner doorknob | -- | brass | stamped and bent | houses and secures torsional spring
|
| 12
| outer plate locking mechanism | latch | -- | brass | stamped | attaches to door, similar to strike plate
|
| 13
| inner plate locking mechanism | latch | -- | brass | stamped | wedges between #12 and the door
|
| 14
| latch | latch | -- | steel | molded | latches door to door jam
|
| 15
| lock attachment | latch | -- | steel | molded | attaches to latch, does not slide when locked
|
| 16
| face for outer doorknob | outer doorknob | -- | brass | stamped | aesthetically pleasing
|
| 17
| hook | latch | -- | brass | stamped | hooks to latch or lock attachment
|
| 18
| large hooks x2 | latch | -- | steel | stamped | pulls back latch
|
| 19
| hook mechanism plate | latch | -- | plastic | molded/injection molding | hooks # 18 to latch
|
| 20
| small hook from lock | latch | -- | brass | molded | (unknown use)
|
| 21
| pin | latch | -- | brass | stamped and bent | adjusts locking mechanism between two different lengths
|
