Product Description
DIN 931 hexagon head screw, M20 x 290, Article number 9311020290ZFS. Property class / material: steel 10.9, surface finish zinc flake, silver. Hexagon Head Screw manufactured to DIN 931 with ISO metric (M) thread, coarse pitch, partially 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
- DIN 931
- Type
- Hexagon Head Screw
- Property class / grade
- 10.9
- Class (detailed)
- 10.9
- Thread type
- M
- Thread diameter
- 20 mm
- Pitch
- 2.5 mm
- Thread pitch class
- Coarse
- Thread direction
- Right
- Length
- 290 mm
- Thread length
- 65 mm
- Threading
- Partially Threaded
- Fully threaded
- No
- Head type
- Hexagon Head
- Drive type
- Hex Drive
- Key width (across flats)
- 30 mm
- Head height
- 12.5 mm
- Surface treatment
- ZINC FLAKE SILVER NO CR6+ 480 H
- Surface treatment code
- ZINCFLAKE SILVER
- Length
- 290 mm
- Thread standard
- ISO metric (M)
- Article number
- 9311020290ZFS
- Category
- Bolts and Screws / Hexagon Head Screws
Standards & Compliance
- Standard
- DIN 931
- Size / Series
- M20 x 290
- Material
- Steel 10.9
- 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 9311020290ZFS?
- 9311020290ZFS 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 9311020290ZFS.
- What is the HS code for 9311020290ZFS?
- The customs tariff (HS) code for 9311020290ZFS is 731815.
- Who manufactures 9311020290ZFS?
- 9311020290ZFS is a Bufab product in the C-Parts range.
- Is a datasheet available for 9311020290ZFS?
- Yes — the 9311020290ZFS datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for 9311020290ZFS?
- The minimum order quantity is 1.
- Is 9311020290ZFS available?
- Yes — 9311020290ZFS 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).