Product Description
ISO 7040 hexagon lock nut, M3, sst 72 h, Article number 70400033SST072. Property class / material: steel class 6, surface finish zinc plated, yellow passivated. 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.6
- Class (detailed)
- CL.6
- Thread type
- M
- Thread diameter
- 3 mm
- Pitch
- 0.5 mm
- Thread pitch class
- Coarse
- Thread direction
- Right
- Threading
- Fully Threaded
- Key width (across flats)
- 5.5 mm
- Surface treatment
- Zinc Yellow Passivation Fe/Zn P2 (YZP 3+)
- Surface treatment code
- ZPL YELLOW
- Nut height
- 4.5 mm
- Thread standard
- ISO metric (M)
- Salt spray test
- 72 h (ISO 9227)
- Article number
- 70400033SST072
- Category
- Nuts
Standards & Compliance
- Standard
- ISO 7040
- Size / Series
- M3
- Material
- Steel class 6
- Thread Standard
- ISO metric (M)
- HS Code
- 731816
Product Documentation
More from Bufab
Bufab
ISO 7040 Hexagon Lock Nut, Steel class 8, M12, Zinc Plated (7040012ZN8)
Bufab
ISO 7040 Hexagon Lock Nut, Steel class 8, M12, Zinc Plated (7040012ZN8CNT2)
Bufab
ISO 7040 Hexagon Lock Nut, Stainless A4-80, M5
704005
Bufab
ISO 7040 Hexagon Lock Nut, Steel class 8, M5, Zinc Plated (704005ZN5CNT2)
Bufab
ISO 7040 Hexagon Lock Nut, Stainless A4-80, M6 (704006)
Bufab
ISO 7040 Hexagon Lock Nut, Stainless A4-80, M8 (704008)
Bufab
ISO 7040 Hexagon Lock Nut, Stainless A4-80, M10 (704010)
Bufab
ISO 7040 Hexagon Lock Nut, Steel class 10, M5, Zinc Plated
704010051
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 70400033SST072?
- 70400033SST072 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 70400033SST072.
- What is the HS code for 70400033SST072?
- The customs tariff (HS) code for 70400033SST072 is 731816.
- Who manufactures 70400033SST072?
- 70400033SST072 is a Bufab product in the C-Parts range.
- Is a datasheet available for 70400033SST072?
- Yes — the 70400033SST072 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for 70400033SST072?
- The minimum order quantity is 1.
- Is 70400033SST072 available?
- Yes — 70400033SST072 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).