Schaub Artifex Knob (131-, 132-)

The Artifex knob line from Schaub offers traditional round cabinet hardware made from Britannium — a tin-based alloy that delivers authentic pewter appearance without lead content. At 4.9 stars across 103 reviews, contractors appreciate the heavy feel and quality construction. These knobs suit rustic, farmhouse, industrial, and transitional design projects where cabinet hardware needs both durability and character.

Material and Construction

Britannium sets these knobs apart from typical zinc alloy hardware. This tin-based material is naturally lead-free — addressing both aesthetic and safety concerns for residential projects. The material offers a more authentic pewter/silver look compared to standard brass or zinc with pewter plating.

The Natural and Dark Pewter finishes are “living finishes” that oxidize naturally over time, developing unique patina. Schaub doesn’t warranty these finishes — they’re meant to age and change. Hand-tightening during installation prevents uneven initial oxidation that can occur with power tools.

Size Options and Specifications

Two distinct series serve different cabinet scales:

Series	Diameter	Projection	Base Diameter	Thread Options
131	1-1/2” (38mm)	1-3/8” (35mm) or 1-1/2” (38mm)	5/8” (16mm)	8-32 or M4
132	1-1/8” (28.6mm)	1-1/4” (31.8mm)	5/8” (15.9mm)	M4 only

The Series 131 offers two projection options — 1-3/8” or 1-1/2” — letting installers match knob depth to door thickness and style preferences. Series 132 provides a more compact 1-1/8” diameter option for smaller doors or drawers where the larger knob would overwhelm proportions.

Both series use standard single-hole through-mounting, making retrofit installations straightforward. Mounting hardware comes included — typically M4 or 8-32 machine screws depending on the specific model ordered.

Installation and Warranty

Standard cabinet hole patterns mean these knobs work with existing door prep. The included mounting screws handle typical cabinet door thicknesses. The knobs are compatible with Artifex cup pulls and standard pulls for coordinated hardware throughout a project.

Schaub backs the mechanical components with a Limited Lifetime Warranty covering defects in material and workmanship. The living finishes carry no warranty — natural oxidation and patina development are intended characteristics, not defects.

California Proposition 65 warning appears on product packaging, standard disclosure for hardware products sold in that state.

Frequently Asked Questions

What makes Britannium different from regular cabinet hardware metals? Britannium is a tin-based alloy that’s naturally lead-free. It provides more authentic pewter/silver appearance than standard brass or zinc with pewter plating. The material develops natural patina over time.

Which size should I choose for kitchen cabinets? Series 131 with 1-1/2” diameter works for standard kitchen cabinet doors. Series 132’s smaller 1-1/8” diameter suits upper cabinets or bathroom vanities where proportions need to stay modest.

Do these knobs require special installation? No special tools needed — standard single-hole mounting with included screws. Hand-tighten to avoid uneven oxidation on living finishes. Power drivers work fine but finish the last turns by hand.

How do living finishes age over time? Natural and Dark Pewter finishes oxidize naturally, creating unique patina. No two knobs age identically. Schaub doesn’t warranty these finishes because the aging process is the intended design feature.