Schlage KS43F2300 Padlock, 3/8" Dia. Shackle, 2" Clearance

The Schlage KS43F2300 is a solid brass body commercial padlock with a 3/8" diameter hardened alloy steel shackle, 2" vertical clearance, and a 6-pin Schlage C keyway cylinder. Double deadbolt locking mechanism, meets or exceeds ASTM standards for shackle strength, cutting resistance, and corrosion resistance. Ships keyed differently (KD) with two nickel silver cut Schlage-branded keys per lock. 

What Is the Schlage KS43F2300 Padlock

Schlage (founded 1920 in San Francisco, now part of Allegion) builds the KS series as its commercial padlock line, designed for facilities already standardized on Schlage cylinder locks. The "KS43" designation indicates the 43-series brass body size, and "F2300" breaks down as F (brass finish) + 2 (keyed different configuration) + 3/00 (3/8" shackle with standard clearance). This is a medium-duty commercial padlock positioned for lockout/tagout compliance, institutional key control programs, storage locker banks, gym lockers, tool cribs, fleet vehicle equipment, contractor job boxes, gate applications, and any opening where a facility needs a Schlage-compatible padlock that keys to the same master system as the rest of the building.

Schlage KS43F2300 Specifications

Full specs for the spec writer or purchasing manager:

• Body material: solid brass

• Body dimensions: 1-15/16" wide × 2-3/16" tall × 7/8" deep

• Shackle diameter: 3/8" (A dimension)

• Shackle vertical clearance: 2" (B dimension)

• Shackle horizontal clearance: 3/4" (C dimension)

• Shackle material: hardened alloy steel

• Locking mechanism: double deadbolt (both heel and toe of shackle lock into body)

• Cylinder: conventional Key-In-Lever, 6-pin solid brass, pinned to 5 (one extra pin chamber available for master keying)

• Keyway: Schlage C standard (classic keyway, compatible with most Schlage cylindrical locks)

• Keying: keyed different (KD) standard (each lock has unique key, no two padlocks in an order open with the same key unless specifically ordered keyed alike)

• Cylinder finish: 606 Satin Brass

• Keys included: 2 nickel silver cut keys per lock, branded Schlage

• Certifications: meets or exceeds ASTM standards for steel shackle strength, shackle cutting resistance, and corrosion resistance

• Part number: KS43F2300

• UPC: 720018-997283

Why Schlage C Keyway Compatibility Matters

The single most important feature of the KS43F2300 for commercial buyers isn't visible in the specs at first glance: the 6-pin C keyway. If your facility is already running Schlage cylindrical locks (Schlage Primus, Schlage Everest, Schlage Classic, or any of the L/ND/H series door hardware), the KS43F2300 can be keyed to integrate directly into your existing master key system. Your locksmith takes the same C keyway master key that opens your building doors and keys these padlocks to operate on that same key (or a sub-master, or a change key, depending on your hierarchy). The practical result: the facility manager, maintenance team, or security staff don't need to carry a separate padlock key. One key opens the building, the storage rooms, and the equipment padlocks. This is why institutional buyers (K-12 schools, hospitals, universities, property managers, manufacturing facilities) choose Schlage KS padlocks over Master Lock or American Lock when the building is already on Schlage cylinders. If your facility isn't on Schlage, the KS43F2300 still works as a standalone keyed-different padlock, but the master-keying advantage disappears and you should also consider the Abus 83/45-300 S2 (also Schlage C keyway, rekeyable) or a Sargent 758 LA keyway padlock for Sargent-based buildings.

Applications for the KS43F2300

Standard commercial deployments for this specific body size and shackle dimension include lockout/tagout (LOTO) programs for OSHA compliance on industrial equipment (the 3/8" shackle fits most standard LOTO hasp points), storage locker banks at gyms, employee locker rooms, and sports facilities (the 2" clearance accommodates most locker loops), outdoor gate applications on commercial properties, chain-link fence gates, and perimeter security, tool crib padlocks in manufacturing and contractor operations, fleet vehicle toolbox and equipment security, storage units and self-storage overlock scenarios, school and university institutional applications with key-system integration, and property management applications across multi-unit buildings. The brass body offers better corrosion resistance than plated steel padlocks for outdoor and coastal environments, though for salt spray or extreme weather you should step up to the Abus 83WP-IC/53 Schlage FSIC Prep weather-protected padlock.