Kwikset 3105 Size 4 Bottom Pins 100 Pack

Product Description

The KWIKSET 3105 is a factory-standard size 4 bottom pin used in Kwikset-format pin tumbler lock cylinders. These pins are a core component of the lock cylinder stack, establishing the shear line when paired with the correct key cut. Supplied in a pack of 100, this quantity suits locksmiths, security technicians, and property managers who rekey locks in volume. Each pin is precision-machined to Kwikset tolerances to ensure consistent cylinder operation and reliable key function after rekeying.

Size 4 bottom pins are installed during cylinder rekeying procedures on Kwikset-format deadbolts, knobsets, leversets, and handlesets used in residential applications. This 100-count pack is suited to service shops, apartment communities, and rekey technicians who maintain large key systems or process multiple lock changes per day. Having a dedicated supply of individual pin sizes reduces bench time and keeps rekey kits fully stocked.

Key Features

• Size 4 bottom pin for Kwikset-format pin tumbler cylinders
• 100 pins per pack for high-volume rekey operations
• Machined to Kwikset cylinder tolerances for consistent shear-line performance
• Compact packaging — 1 inch x 3 inches x 0.25 inches — stores easily at the bench or in a service kit
• Lightweight at 0.05 pounds per pack, suitable for mobile technician kits

Compatibility

Designed for use in Kwikset-format pin tumbler lock cylinders commonly found in residential deadbolts, knobsets, leversets, and handlesets.

Installation Notes

Installation is performed by a qualified locksmith or trained security technician during a standard cylinder rekeying procedure. Remove the cylinder from the door hardware and use a plug follower and pinning tray to control existing pins before loading new ones. Follow the key-bitting specification for the target key when selecting pin sizes to ensure correct shear-line alignment. Avoid mixing pin brands or tolerances within a single cylinder stack.