Product Description
ISO 7040 hexagon lock nut, M8, Article number 7040A408. Made in stainless steel a4-70. 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
- A4-70
- Class (detailed)
- A4-70
- Thread type
- M
- Thread diameter
- 8 mm
- Pitch
- 1.25 mm
- Thread pitch class
- Coarse
- Thread direction
- Right
- Threading
- Fully Threaded
- Key width (across flats)
- 13 mm
- Surface treatment
- Plain (no plating)
- Surface treatment code
- PLAIN
- Nut height
- 9.5 mm
- Thread standard
- ISO metric (M)
- Article number
- 7040A408
- Category
- Nuts
Standards & Compliance
- Standard
- ISO 7040
- Size / Series
- M8
- Material
- Stainless A4-70
- Thread Standard
- ISO metric (M)
- HS Code
- 731816
Product Documentation
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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 7040A408?
- 7040A408 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 7040A408.
- What is the HS code for 7040A408?
- The customs tariff (HS) code for 7040A408 is 731816.
- Who manufactures 7040A408?
- 7040A408 is a Bufab product in the C-Parts range.
- Is a datasheet available for 7040A408?
- Yes — the 7040A408 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for 7040A408?
- The minimum order quantity is 1.
- Is 7040A408 available?
- Yes — 7040A408 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).