Product Description
ISO 4017 hexagon head screw, M12 x 40, Article number 40178120403. Property class / material: steel 8.8, surface finish zinc plated, yellow passivated. Hexagon Head Screw manufactured to ISO 4017 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 4017
- Type
- Hexagon Head Screw
- Property class / grade
- 8.8
- Class (detailed)
- 8.8
- Thread type
- M
- Thread diameter
- 12 mm
- Pitch
- 1.75 mm
- Thread pitch class
- Coarse
- Thread direction
- Right
- Length
- 40 mm
- Thread length
- 40 mm
- Threading
- Fully Threaded
- Fully threaded
- Yes
- Head type
- Hexagon Head
- Drive type
- Hex Drive
- Key width (across flats)
- 18 mm
- Head height
- 7.5 mm
- Surface treatment
- Zinc Yellow Passivation Fe/Zn P2 (YZP 3+)
- Surface treatment code
- ZPL YELLOW
- Length
- 40 mm
- Thread standard
- ISO metric (M)
- Article number
- 40178120403
- Category
- Bolts and Screws / Hexagon Head Screws
Standards & Compliance
- Standard
- ISO 4017
- Size / Series
- M12 x 40
- Material
- Steel 8.8
- Thread Standard
- ISO metric (M)
- HS Code
- 731815
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 40178120403?
- 40178120403 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 40178120403.
- What is the HS code for 40178120403?
- The customs tariff (HS) code for 40178120403 is 731815.
- Who manufactures 40178120403?
- 40178120403 is a Bufab product in the C-Parts range.
- Is a datasheet available for 40178120403?
- Yes — the 40178120403 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for 40178120403?
- The minimum order quantity is 1.
- Is 40178120403 available?
- Yes — 40178120403 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).