The PEUGEOT NS 500A frame carries the Swiss bottom bracket thread standard of 35x100, a specification that separates it from the more common French and BSC variants. Its steel construction and French origin place it within the lineage of Peugeot's utilitarian and touring models. Oxidation is present on this used frame.
Swiss Threading: What the 35x100 Specification Means
Bottom bracket threading determines which bearing assemblies will seat correctly into the shell. The Swiss standard, measured here at 35x100, differs from French and British threading in both diameter and thread pitch. This matters for anyone building up a period-correct or rider-grade machine: the correct bottom bracket must match this shell, and mismatched threading will not engage properly. The frame is made of steel, consistent with the construction methods of its era.
Condition and Honest Assessment
This is a used frame with oxidation present. The photos form part of the description — examine them for the extent and location of oxidation, and for any cosmetic marks consistent with storage and prior use. Small cosmetic defects or traces of use linked to prolonged storage, such as micro-scratches, may also be present.
Technical specifications
- Country of origin: France
- Oxidation: Yes
- Material: Steel
- Threading (bottom bracket): 35x100 "Swiss"
Pairing the NS 500A with Period Components
A frame built around Swiss threading invites a considered parts selection. For drivetrain, a 5-Speed ATOM Freewheel, Vintage Bike, 480g, 16-28, 34.7×100, Eroica RC47 offers a period-appropriate freewheel option. For the cockpit, a Touring bike handlebar, vintage, 42.5 cm, Eroica -2004 R45 suits a randonneur or touring build. And for braking, Brake Calipers UNIVERSAL SUPER 68, vintage bike, Eroica 700c are a well-known period choice. Browse the full Frames category to compare this NS 500A with other vintage steel frames.
FAQ
What bottom bracket threading does this PEUGEOT NS 500A frame use?
It uses a Swiss thread of 35x100, as specified for this frame. This is distinct from French and BSC standards, so make sure your bottom bracket matches this Swiss specification.
What is the frame made of?
The frame is made of steel. It was manufactured in France.
Does this frame have any oxidation?
Yes, oxidation is present. The photos form part of the description, so examine them to assess the extent and location of the oxidation before deciding.
Are there other defects visible on the frame?
Oxidation is the defect noted for this frame. Minor cosmetic marks or traces of use linked to prolonged storage, such as micro-scratches, may also be present. The photos form part of the description.
