The Falcon A30761-000-00 is the OEM chassis assembly for the Falcon T Series T101 passage latchset, non-keyed. It is the internal mechanism, the core component that sits inside the door and controls latch bolt retraction when the lever is turned. The outer trim (rose, lever, spindle) mounts over and around this chassis. When the chassis wears, strips at the hub, or breaks under high-cycle use, this is the field replacement part. It is chassis-specific to the T101 passage function and is not compatible with any other T Series function.

This chassis is non-keyed by design. The T101 is a passage latchset ANSI function F75-1, Grade 1 where the latch bolt is retracted by levers from either side at all times. There is no cylinder, no push button, no locking mechanism of any kind in this chassis. Both levers always operate freely. If the installed function is T301 (privacy), T381 (classroom security), T501 (entry), T561 (classroom), or any other T Series function, this chassis is the wrong part. Confirm T101 is the installed function before ordering.

Falcon T Series Cylindrical Lock Chassis: What This Assembly Contains

The T Series chassis is the internal mechanical carrier for the lever-to-latch transmission. It contains the hub assembly that receives the lever spindle, the compression spring mechanism that returns the lever to rest position after operation, and the retraction arm that moves the latch bolt when the hub rotates. The chassis mounts inside the door bore using threaded mounting nuts, and the complete preassembled outer trim and inner spindle assembly are then through-bolted over the chassis using two 10-32 screws coated with thread sealant to resist loosening in high-use applications.

The T Series uses a compression spring chassis design rather than the torsion spring design found in most competing Grade 1 cylindrical locks. Per the Falcon T Series catalog: unlike torsion springs that can break at their bend points, the compression spring design distributes load across the full spring body, exceeding ANSI/BHMA A156.2 cycle test requirements and providing consistent lever return through the full service life of the lock in high-traffic installations. This spring design is one of the primary reasons the T Series is specified for institutional and high-abuse applications.

Falcon Lock T Series: Why the T101 Chassis Is Function-Specific

The Falcon T Series chassis family is not universal across functions. Each function in the T Series catalog uses a chassis matched to its specific internal mechanism:

The T101 (passage, this product) chassis has no cylinder bore, no locking cam, and no button mechanism. Both hub positions are always active.

The T301 (privacy) chassis includes the push-button mechanism and emergency release connection. The T381 (classroom security) chassis includes the inside key override and classroom security locking mechanism. The T501 and T561 (entry and classroom) chassis include cylinder cam positions and outside lever control.

Swapping a T101 chassis into a T301 or T561 application would eliminate all security functions at that opening. The chassis determines the lock's function entirely.

Falcon T Series Parts: Key Chassis Specifications

The T Series chassis components are constructed from brass or cold-formed steel, zinc plated and dichromated for rust resistance. The T Series is non-handed the chassis installed in any door handle without modification. Door thickness range is 1-3/4" to 2-1/4" as standard, with 2-3/4" backset as standard (2-3/8", 3-3/4", and 5" also available). The T Series meets ANSI/BHMA A156.2, Series 4000, Grade 1 and is UL listed for 3-hour fire door (A label) assemblies.

A critical T Series feature relevant to this chassis: the T Series accepts any manufacturer's cylinder and the cylinder is removable for rekeying without disassembling the lock. For the T101 passage chassis (this product), no cylinder is involved; this is confirmed by the "non-keyed" designation.

SecurityParts stocks OEM Falcon T Series chassis assemblies across all functions and cylindrical lock parts.