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Polished brass ball knob lockset, steel construction

Master Lock

Master Lock BAO0103 Ball Knob Lockset Grd 3

SKU CH-1P6R-6SMTV

A Grade 3 entrance knob lockset with a steel ball knob in polished brass, adjustable backset and two keys

  • TypeDoor Hardware & Components
  • StyleBAO Ball
  • Polished brass finish resists corrosion
  • Grade 3 certification meets residential security standards
  • Adjustable backset fits 2-3/8 in. and 2-3/4 in. doors
  • Three-hour fire rating protects escape routes
  • Two keys included for immediate use

Master Lock BAO Ball Knob Lockset

This entrance lockset uses a ball-style knob made of steel with a polished brass finish. It is rated ANSI Grade 3 for light-duty residential use. The set includes two keys keyed different on a Master Lock keyway with four pins. It fits standard doors with a 2-3/8 in. or 2-3/4 in. backset.

Adjustable 2-3/8 In. or 2-3/4 In. Backset

The latch adjusts to cover both common residential backset measurements. A square-corner full-lip strike plate measuring 2-1/4 in. by 1-3/4 in. is included. The lockset carries a three-hour fire rating and installs on doors 1-3/8 in. to 1-3/4 in. thick.

Suits Homeowners Replacing Standard Passage Hardware

Builders needing commercial-grade security or a higher ANSI grade should look elsewhere. Households wanting a single-key system across multiple doors will need a keyed-alike option not provided here. Buyers requiring smart-home integration or electronic access must choose a different product type.

Highlights

  • Polished brass finish resists corrosion
  • Grade 3 certification meets residential security standards
  • Adjustable backset fits 2-3/8 in. and 2-3/4 in. doors
  • Three-hour fire rating protects escape routes
  • Two keys included for immediate use

Specifications

BrandMASTER LOCK
TypeDoor Hardware & Components
StyleBAO Ball

Questions about this item

What does Grade 3 mean for everyday security on a home entrance?

Grade 3 is the ANSI residential rating, so the lock meets basic durability and cycle testing for light‑duty interior or front‑door use.

What backsets does the lock support and how does that affect installation?

The latch adjusts to 2‑3/8 in. or 2‑3/4 in. backsets, covering the two most common residential door preparations.

What door thicknesses will the BAO0103 fit without extra parts?

It installs on doors 1‑3/8 in. to 1‑3/4 in. thick, matching standard interior and exterior residential doors.

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