M6 Serrated Lock Washer, Form A (External Teeth), DIN 6798

The M6 serrated lock washer (DIN 6798, form A, external teeth) is 0.7 mm thick, with a 6.4 mm hole and an outside diameter of 11 mm. It has 12 teeth. 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: din6798-a-m6
• Standard: DIN 6798:1988 · size M6

Files

Part key	Simplified
din6798-a-m6	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
d1	Inside diameter	6.4	6.4	6.62	6.4	nominal	L1
d2	Outside diameter, forms A and J	10.57	11	11	11	nominal	L1
s1	Sheet thickness, forms A and J		0.7		0.7	nominal	L1
teeth_A	Number of teeth, form A	12			12	single limit (min), modeled at the limit	L1

Drawing

As a PDF: CC-DIN6798-SZ-M6.pdf.

Goes with the M6 serrated lock washer

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

The M6 form A serrated lock washer beside the M5 and the M8

The M6 is number 6, counting from the smallest, of the 7 DIN 6798 serrated lock washers published here, from M2 to M8.

• Inside diameter (d1): 6.4 mm on the M6 form A serrated lock washer, against 5.3 mm on the M5 and 8.4 mm on the M8.
• Outside diameter (d2): 11 mm on the M6 form A serrated lock washer, against 10 mm on the M5 and 15 mm on the M8.
• Sheet thickness (s1): 0.7 mm on the M6 form A serrated lock washer, against 0.6 mm on the M5 and 0.8 mm on the M8.
• Number of teeth (teeth_A): at least 12 on the M6 form A serrated lock washer, against at least 11 on the M5 and at least 14 on the M8.

The M6 form A serrated lock washer in its other forms

• M6 Serrated Lock Washer, Form J (Internal Teeth), DIN 6798: number of teeth at least 9.
• M6 Serrated Lock Washer, Form V (Countersunk), DIN 6798: outside diameter 11.8 mm, sheet thickness 0.4 mm, number of teeth at least 16.

Other sizes

• One size smaller: M5 Serrated Lock Washer, Form A (External Teeth), DIN 6798, 5.3 mm hole, 10 mm OD.
• One size larger: M8 Serrated Lock Washer, Form A (External Teeth), DIN 6798, 8.4 mm hole, 15 mm OD.

Documents

• CC-DIN6798-DS-M6.pdf: M6 datasheet: values with levels, sources
• CC-DIN6798-SZ-M6.pdf: M6 drawing: this size's values on the views
• parts.json: the part record of this size (the platform contract)

Sources

bossard-bn786, engineersedge-din6798, fasten-it-din6798, globalfastener-din6798-a, globalfastener-din6798-j, globalfastener-din6798-v. Full citations: the method page and this size's datasheet.

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