M6 Split Lock Washer (Spring Washer), DIN 127

The M6 split lock washer (DIN 127) is 3.2 to 3.8 mm thick, with a 6.1 to 6.5 mm hole and an outside diameter of up to 11.8 mm. It sits under M6 screw heads and nuts; here as simplified STEP files.

How these parts are made, and what the levels mean: read the method

• Also searched as: M6 washer
• Model id: din127-b-m6
• Standard: DIN 127:1987 · size M6

Files

Part key	Simplified
din127-b-m6	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
d1	Inside diameter	6.1		6.5	6.3	midpoint of min–max	L1
d2	Outside diameter			11.8	11.8	single limit (max), modeled at the limit	L1
b	Section width	2.35	2.5	2.65	2.5	nominal	L1
s	Section thickness	1.5	1.6	1.7	1.6	nominal	L1
r	Section corner radius		0.3		0.3	nominal	L1
h	Free height	3.2		3.8	3.5	midpoint of min–max	L1

Drawing

As a PDF: CC-DIN127-SZ-M6.pdf.

Goes with the M6 split lock washer

• ISO 4762 socket head cap screw in 12 lengths from 10 to 60 mm, the same size as this M6 split lock washer: M6 Socket Head Cap Screw (Allen Bolt), ISO 4762 / DIN 912
• ISO 4017 hex head screw in 11 lengths from 12 to 60 mm, the same size as this M6 split lock washer: M6 Hex Head Screw (Hex Bolt), ISO 4017
• ISO 4032 hex nut, the same size as this M6 split lock washer: M6 Hex Nut (Hexagon Nut), ISO 4032 / DIN 934

The M6 split lock washer beside the M5 and the M8

The M6 is number 6, counting from the smallest, of the 7 DIN 127 split lock washers published here, from M2 to M8.

• Inside diameter (d1): 6.1 to 6.5 mm on the M6 split lock washer, against 5.1 to 5.4 mm on the M5 and 8.1 to 8.5 mm on the M8.
• Outside diameter (d2): up to 11.8 mm on the M6 split lock washer, against up to 9.2 mm on the M5 and up to 14.8 mm on the M8.
• Section width (b): 2.5 mm on the M6 split lock washer, against 1.8 mm on the M5 and 3 mm on the M8.
• Section thickness (s): 1.6 mm on the M6 split lock washer, against 1.2 mm on the M5 and 2 mm on the M8.
• Section corner radius (r): 0.3 mm on the M6 split lock washer, against 0.2 mm on the M5 and 0.5 mm on the M8.
• Free height (h): 3.2 to 3.8 mm on the M6 split lock washer, against 2.4 to 2.8 mm on the M5 and 4 to 4.7 mm on the M8.

Other sizes

• One size smaller: M5 Split Lock Washer (Spring Washer), DIN 127, 5.1 to 5.4 mm hole, up to 9.2 mm OD.
• One size larger: M8 Split Lock Washer (Spring Washer), DIN 127, 8.1 to 8.5 mm hole, up to 14.8 mm OD.

Documents

• CC-DIN127-DS-M6.pdf: M6 datasheet: values with levels, sources
• CC-DIN127-SZ-M6.pdf: M6 drawing: this size's values on the views
• parts.json: the part record of this size (the platform contract)

Sources

fasten-it-din127, fasteners-eu-din127, fasteners-eu-din127-a-section, globalfastener-din127, globalfastener-din127-a-section. Full citations: the method page and this size's datasheet.

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