Product Description
ISO 7040 hexagon lock nut, M20, sst 720 h, Article number 70401020ZFS720. Property class / material: steel class 10, surface finish zinc flake, silver. Hexagon Lock Nut manufactured to ISO 7040 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 7040
- 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
- Key width (across flats)
- 30 mm
- Surface treatment
- DELTA KL100x2/SEAL+GZ
- Surface treatment code
- ZINC FLAKE SILVER
- Nut height
- 22.8 mm
- Thread standard
- ISO metric (M)
- Salt spray test
- 720 h (ISO 9227)
- Article number
- 70401020ZFS720
- Category
- Nuts
Standards & Compliance
- Standard
- ISO 7040
- Size / Series
- M20
- Material
- Steel class 10
- Thread Standard
- ISO metric (M)
- HS Code
- 731816
Product Documentation
More from Bufab
Bufab
ISO 7040 Hexagon Lock Nut, Steel class 10, M24, Zinc Plated
704010241
Bufab
ISO 7040 Hexagon Lock Nut, Steel class 10, M24, Geomet Silver
70401024GEO321VL
Bufab
ISO 7040 Hexagon Lock Nut, Stainless A4-80, M12 (704012)
Bufab
ISO 7040 Hexagon Lock Nut, Steel class 8, M12, Zinc Plated (7040121)
Bufab
ISO 7040 Hexagon Lock Nut, Steel class 8, M12, EN 10204 3.1 Certificate, Zinc Flake, Silver
704012FLZNNC
Bufab
ISO 7040 Hexagon Lock Nut, Stainless A4-80, M16 (704016)
Bufab
ISO 7040 Hexagon Lock Nut, Stainless A4-80, M20 (704020)
Bufab
ISO 7040 Hexagon Lock Nut, Stainless A4-80, M24
704024
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 70401020ZFS720?
- 70401020ZFS720 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 70401020ZFS720.
- What is the HS code for 70401020ZFS720?
- The customs tariff (HS) code for 70401020ZFS720 is 731816.
- Who manufactures 70401020ZFS720?
- 70401020ZFS720 is a Bufab product in the C-Parts range.
- Is a datasheet available for 70401020ZFS720?
- Yes — the 70401020ZFS720 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for 70401020ZFS720?
- The minimum order quantity is 1.
- Is 70401020ZFS720 available?
- Yes — 70401020ZFS720 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).