Frigidaire surface-control knob 316442501 is typically sold in 4-packs even when you broke just one. Print exactly the one you need.
Shaft fit: 6mm D-shaft (6.21 × 5.38mm bore). Knobulator lets you set the exact bore
shape and clearance, so the knob grips the shaft instead of spinning — the usual failure of
one-size-fits-all replacements.