Product Description
DIN 7504-K hexagon head self-tapping screw with flange, ST5.5 x 25, Article number 7504K550251. Property class / material: steel, surface finish zinc plated. Hexagon Head Self-Tapping Screw with Flange manufactured to DIN 7504-K with ISO 1478 tapping screw thread (ST) 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
- DIN 7504-K
- Standard description
- K
- Type
- Hexagon Head Self-Tapping Screw
- Property class / grade
- STEEL
- Class (detailed)
- STEEL
- Thread type
- ST
- Thread diameter
- 5.5 mm
- Pitch
- 1.8 mm
- Thread pitch class
- Coarse
- Thread direction
- Right
- Length
- 25 mm
- Thread length
- 25 mm
- Threading
- Fully Threaded
- Fully threaded
- Yes
- Head type
- Hexagon Head with Flange
- Drive type
- Hex Drive
- Key width (across flats)
- 8 mm
- Head height
- 5.4 mm
- Surface treatment
- Zinc Bright Passivation Fe/Zn P1 (ZPL 3+)
- Surface treatment code
- ZPL
- Length Cut Bottom
- 8.2 mm
- Screw Flange Diameter
- 11 mm
- Screw Flange Thickness
- 1 mm
- Length
- 25 mm
- Thread standard
- ISO 1478 tapping screw thread (ST)
- Article number
- 7504K550251
- Category
- Bolts and Screws / Self Drilling Screws
Standards & Compliance
- Standard
- DIN 7504-K
- Size / Series
- ST5.5 x 25
- Material
- Steel
- Thread Standard
- ISO 1478 tapping screw thread (ST)
- 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 7504K550251?
- 7504K550251 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 7504K550251.
- What is the HS code for 7504K550251?
- The customs tariff (HS) code for 7504K550251 is 731815.
- Who manufactures 7504K550251?
- 7504K550251 is a Bufab product in the C-Parts range.
- Is a datasheet available for 7504K550251?
- Yes — the 7504K550251 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for 7504K550251?
- The minimum order quantity is 1.
- Is 7504K550251 available?
- Yes — 7504K550251 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).