Product Description
ISO 4032 hexagon nut, M20, Article number 40321020ZNTW. Property class / material: steel class 10, surface finish zinc-nickel, silver. Hexagon Nut manufactured to ISO 4032 with ISO metric (M) thread, coarse pitch, fully threaded. Standard parts to the same standard, property class, dimensions and surface finish are interchangeable between manufacturers; confirm the controlling standard revision, any class-society or application approval, and the mating thread before substitution.
Technical Specifications
- Standard
- ISO 4032
- Property class / grade
- CL.10
- Class (detailed)
- CL.10
- Thread type
- M
- Thread diameter
- 20 mm
- Pitch
- 2.5 mm
- Thread pitch class
- Coarse
- Thread direction
- Right
- Threading
- Fully Threaded
- Surface treatment
- Zn-Ni SILVER, 8 MICRON, SEALED WITH LUBRICATION
- Surface treatment code
- Zn-Ni SILVER
- Nut thickness
- 18 mm
- Width across flats
- 30 mm
- Thread standard
- ISO metric (M)
- Article number
- 40321020ZNTW
- Category
- Nuts / Hexagon Nuts
Standards & Compliance
- Standard
- ISO 4032
- Size / Series
- M20
- Material
- Steel class 10
- Thread Standard
- ISO metric (M)
- HS Code
- 731816
Product Documentation
More from Bufab
Bufab
ISO 4032 Hexagon Nut, Steel class 10, M22, Plain
40321022
Bufab
ISO 4032 Hexagon Nut, Steel class 10, M22, EN 10204 3.1 Certificate, Plain
40321022C
Bufab
ISO 4032 Hexagon Nut, Steel class 10, M22, Zinc Flake, Silver
40321022DELSI
Bufab
ISO 4032 Hexagon Nut, Steel class 10, M24, Plain
40321024
Bufab
ISO 4032 Hexagon Nut, Steel class 10, M24, Zinc Plated
403210241
Bufab
ISO 4032 Hexagon Nut, Steel class 10, M24, Hot-Dip Galvanised (ISO fit)
403210242
Bufab
ISO 4032 Hexagon Nut, Steel class 10, M24, Zinc Flake, Silver (40321024GEO)
Bufab
ISO 4032 Hexagon Nut, Steel class 10, M24, Zinc Flake, Silver (40321024GEO500B)
Technical guides
Catalogue entry last verified: 2026-09-30. A manufacturer datasheet is attached to this entry — confirm application-critical values against it.
Frequently asked questions
- Where can I buy 40321020ZNTW?
- 40321020ZNTW can be ordered from cballast.com as a Bufab catalogue item: request a quotation on this page or email sales@cballast.com, and the order ships worldwide.
- What is the manufacturer part number for this Bufab product?
- The manufacturer part number is 40321020ZNTW.
- What is the HS code for 40321020ZNTW?
- The customs tariff (HS) code for 40321020ZNTW is 731816.
- Who manufactures 40321020ZNTW?
- 40321020ZNTW is a Bufab product in the C-Parts range.
- Is a datasheet available for 40321020ZNTW?
- Yes — the 40321020ZNTW datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for 40321020ZNTW?
- The minimum order quantity is 1.
- Is 40321020ZNTW available?
- Yes — 40321020ZNTW is available to order: fulfilment is from supplier stock in cBallast's European network, dispatched directly from the warehouse to the customer, with the exact lead time stated in the quotation (reply within 24 hours).