Helical Spring Lock Washer DIN 127B — M56

00021GapprovedStandard

Std. ref: DIN 127B (DIN 127:1987-10 — withdrawn 1993, no successor standard)ESX desig.: ESX-DIN127B-M56-FST-PLStd. designation: Federringe DIN 127 - B 56 - FSt

Helical spring lock washer, Form B (square ends), nominal size 56 mm, per DIN 127B.

Engineering Attributes

Dimensions

Free Height16 (+2.90/0) mm

Inner Diameter57 (+1.50/0) mm

Nominal Diameter56 mm

Outer Diameter87 (max) mm

Thickness8 (±0.25) mm

Width14 (±0.25) mm

Material & Finish

MaterialSpring steel (DIN 267-26)

Finish / SurfaceNone (as processed)

Mechanical

Unit Weight212 ± 15.1 g

Load DirectionCompression (axial push)

Strength Grade Property ClassFSt

Interface

Installation MethodManual (hand tight)

12 attributes

Interchangeability

No interchangeability relationships agreed yet.

1 part is detected as substitutable for this one from the standard's own interchange rule — listed under Functional alternates below. A detection is computed on every read; a relationship here is one a party has agreed to.

3D · GLB

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Technical data is provided as-is and must be independently verified before use. Terms

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Functional alternates

Same dimensions and material, so they fit the same place. They differ in strength class, coating or tolerance — check the requirement before substituting.

The last 3 columns show the fields that differ from this item (Free height · Free height tolerance · Height tolerance). Values in blue differ; grey values match this item.

Code	Item	Standard	Free heightthis item: 16 mm	Free height tolerancethis item: +2.9/0	Height tolerancethis item: +2.9/0
00021G	Helical Spring Lock Washer DIN 127B — M56this item	DIN 127B	16 mm	+2.9/0	+2.9/0
00025R	Helical Spring Lock Washer DIN 127A — M56also differs in: Locking feature, Tang height	DIN 127A	18 mm	+3.2/0	+3.2/0