Tread Set

Assembly

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The full run of identical wedge-shaped treads plus the spacer rings between their hubs; rotating each tread before clamping sets the rise and the helix.

Direct parts	4
Total parts	107
Used in	1 assembly
Class	Assembly

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The full run of identical wedge-shaped treads plus the spacer rings between their hubs; rotating each tread before clamping sets the rise and the helix. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Tread Set parts and their functions

4 top-level parts · 107 parts in total · full bill of materials below

Tread Set parts diagram: 1 wedge tread, 2 spacer ring, 3 tread hub bushing, 4 riser guard bar. 107 parts in 4 top-level items. — Tread Set parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.

#	Part	Qty	What it does
1	Wedge Tread 5 parts	12×	One per rise
2	Spacer Ring	12×	Set the rise height
3	Tread Hub Bushing	12×	Hub liners
4	Riser Guard Bar	11×	Inter-tread guard bars

3D model

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Build & assembly graph

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Bill of materials for Tread Set

4 top-level lines · 9 rows shown · 107 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Wedge Tread 5 parts	spiral-staircase-tread	12×	12	6	assembly
1.1	Tread Plate	spiral-staircase-tread-plate	1×	12	·	part
1.2	Tread Insert	spiral-staircase-tread-insert	1×	12	·	part
1.3	Tread Hub	spiral-staircase-tread-hub	1×	12	·	part
1.4	Baluster Boss	spiral-staircase-baluster-boss	2×	24	·	part
1.5	Fastener Set	fastener-set	1×	12	·	part
2	Spacer Ring	spiral-staircase-spacer-ring	12×	12	·	part
3	Tread Hub Bushing	spiral-staircase-tread-bush	12×	12	·	part
4	Riser Guard Bar	spiral-staircase-riser-bar	11×	11	·	part

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Where the tread set is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Building & Construction Products 1 Spiral Staircase Kit

Used in 1 assembly

Spiral Staircase Kit

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.50–$100. How estimates work

Vendor	HQ	Specialty	MOQ	Lead time
🇨🇳Foxconn foxconn.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Flex (Singapore) flex.com ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks
🇮🇳Dixon Technologies dixoninfo.com ↗	Noida, IN	Electronics contract mfg	1,000 pcs	6–10 wks
🇨🇳BYD Electronics bydelectronic.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Venture Corp venture.com.sg ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks