Description
The Atlas 533 is an HO Code 83 Snap Track 18-inch radius half section curved track, four-pack — 15° arcs at the same 18" radius as the full #532 section, for curve easements, length trimming, and turnout pickups.
Where the 15° arc earns its keep. Building a 195° approach into a yard ladder, easing the transition from a straight into a curve, fitting an S-curve between two parallel mainlines — none of those land cleanly on 30° boundaries. The 15° half section bridges the gap. It's also the right piece to add after an 18" Snap-Switch turnout (Atlas 541/543) whose diverging leg already includes a 1/3 18" radius section — adding a 533 brings the curve up to a full 18" arc length.
Construction. Code 83 nickel-silver rail, brown molded ties with centerline nail holes for #2540 track nails, pre-fitted rail joiners. Geometry exactly matched to #532 full sections.
Specifications
- Scale: HO
- Rail Code: Code 83 nickel-silver
- Radius: 18" (457 mm)
- Arc: 15° per section (half of #532)
- Pieces per Pack: 4
- Tie Color: Brown
- Brand: Atlas
- SKU / Item Number: 533
Pairs Well With
- Atlas 532 — 18" radius full section (6pc)
- Atlas 534 — 18" radius 1/3 section (4pc), even finer 10° arcs
- Atlas 541 — RH 18" Snap-Switch remote turnout
- Atlas 543 — RH 18" Snap-Switch manual turnout

