Sargent KESO F1 Series Key Retaining Padlock with 2″ x 2″ x 1-1/8″ Brass CaseProfessional Security Padlock with Master Key System IntegrationThe Sargent KESO F1 Series Key Retaining Padlock delivers professional-grade security with full integration into existing KESO F1 key systems. This padlock features a solid brass case measuring 2″ x 2″ x 1-1/8″ with US4 satin brass finish and an 11/32″ diameter stainless steel shackle. The key retaining design allows key removal only in the locked position, providing enhanced security control for commercial applications.Professional Features & Benefits Precise Case Dimensions: 2″ x 2″ x 1-1/8″ solid brass construction provides optimal balance of security and portability for professional applications. Key Retaining Security: Key removable in locked position only, preventing unauthorized access and ensuring positive security control. Master Key System Integration: Compatible with KESO F1 key systems allowing masterkeying with all locks in a facilitys existing system for unified access control. Heavy-Duty Construction: Solid brass case with positive deadlocking construction eliminates springs that can be forced, providing superior tamper resistance. Stainless Steel Shackle: 11/32″ diameter stainless steel shackle with dual stainless steel ball locking mechanism increases security under forcing attempts. Weather Protection: Standard rubber shields protect shackle from freezing for reliable outdoor operation in all weather conditions. Flexible Shackle Options: Available with 1″ standard clearance, 2-1/2″ clearance (specify 857-2), or 4″ clearance (specify 857-4) for various applications. Manufacturer Warranty: 2 Year Limited warranty for added confidence and protection.Technical Specifications Refer to manufacturer documentation for complete technical specifications.Installation & OperationThis padlock is designed for portable security applications where master key system integration is required. Position the padlock to secure the intended item, ensuring adequate clearance for the selected shackle length. The key retaining feature requires the padlock to be in the locked position before key removal. Refer to manufacturer documentation for complete keying options and master key system integration procedures.Professional Applications Commercial Building Security Systems Industrial Equipment Lockout/Tagout Retail Security and Loss Prevention Educational Facility Asset Protection Healthcare Institution Equipment Security Government and Municipal Property Protection Multi-Tenant Property ManagementWhy Choose Sargent Quality?Sargent KESO F1 Series padlocks deliver professional-grade security with solid brass construction and positive deadlocking mechanisms that eliminate vulnerable springs. The dual stainless steel ball locking system actually increases security when forcing is attempted, while weather protection ensures reliable operation in outdoor conditions. 2 Year Limited warranty provides confidence for demanding commercial security applications where dependable performance is essential.