Product Description
DIN 128-B spring lock washer (form B), 24.5 x 40 x 4 mm, Article number 128B2451. Property class / material: steel, surface finish zinc plated. Spring Lock Washer manufactured to DIN 128. 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. Applications: load distribution and locking under bolt heads and nuts in machine building, structural steel, plant maintenance and marine outfitting.
Technical Specifications
- Standard
- DIN 128
- Standard description
- B
- Property class / grade
- STEEL
- Class (detailed)
- STEEL
- Material hardness
- HV420-490
- Surface treatment
- Zinc Bright Passivation Fe/Zn P1 (ZPL 3+)
- Surface treatment code
- ZPL
- Diameter
- 24 mm
- Inner diameter
- 24.5 mm
- Outer diameter
- 38.5 mm
- Thickness
- 4 mm
- Washer Total Thickness
- 6.5 mm
- Article number
- 128B2451
- Category
- Washers / Spring Lock Washers
Standards & Compliance
- Standard
- DIN 128
- Size / Series
- 24.5 x 40 x 4 mm
- Material
- Steel
- HS Code
- 731821
Product Documentation
More from Bufab
Bufab
DIN 128-B Spring Lock Washer, Steel, 27.5 x 43 x 4 mm, Plain
128B275
Bufab
DIN 137-A Wave Washer, Steel, 1.8 x 4 x 0.25 mm, Plain
137A018
Bufab
DIN 137-A Wave Washer, Steel, 2.2 x 4.5 x 0.3 mm, Plain
137A022
Bufab
DIN 137-A Wave Washer, Steel, 2.2 x 4.5 x 0.3 mm, Zinc Plated
137A0221
Bufab
DIN 137-A Wave Washer, Steel, 2.5 x 5 x 0.3 mm, Plain
137A025
Bufab
DIN 137-A Wave Washer, Steel, 2.5 x 5 x 0.3 mm, Zinc Plated
137A0251
Bufab
DIN 137-A Wave Washer, Steel, 2.8 x 5.5 x 0.3 mm, Plain
137A028
Bufab
DIN 137-A Wave Washer, Steel, 2.8 x 5.5 x 0.3 mm, Zinc Plated
137A0281
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 128B2451?
- 128B2451 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 128B2451.
- What is the HS code for 128B2451?
- The customs tariff (HS) code for 128B2451 is 731821.
- Who manufactures 128B2451?
- 128B2451 is a Bufab product in the C-Parts range.
- Is a datasheet available for 128B2451?
- Yes — the 128B2451 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for 128B2451?
- The minimum order quantity is 1.
- Is 128B2451 available?
- Yes — 128B2451 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).