M3 Serrated Lock Washer, Form J (Internal Teeth), DIN 6798

Made for M3 screws, this serrated lock washer (DIN 6798, form J, internal teeth) has a 3.2 mm hole and is 6 mm across, 0.4 mm thick. It has 7 teeth. Download it as simplified STEP files.

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

• Also searched as: M3 washer
• Model id: din6798-j-m3
• Standard: DIN 6798:1988 · size M3

Files

Part key	Simplified
din6798-j-m3	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
d1	Inside diameter	3.2	3.2	3.38	3.2	nominal	L1
d2	Outside diameter, forms A and J	5.7	6	6	6	nominal	L1
s1	Sheet thickness, forms A and J		0.4		0.4	nominal	L1
teeth_J	Number of teeth, form J	7			7	single limit (min), modeled at the limit	L1

Drawing

As a PDF: CC-DIN6798-SZ-M3.pdf.

Goes with the M3 serrated lock washer

• ISO 4762 socket head cap screw in 9 lengths from 5 to 30 mm, the same size as this M3 form J serrated lock washer: M3 Socket Head Cap Screw (Allen Bolt), ISO 4762 / DIN 912
• ISO 4017 hex head screw in 8 lengths from 6 to 30 mm, the same size as this M3 form J serrated lock washer: M3 Hex Head Screw (Hex Bolt), ISO 4017
• ISO 4032 hex nut, the same size as this M3 form J serrated lock washer: M3 Hex Nut (Hexagon Nut), ISO 4032 / DIN 934

The M3 form J serrated lock washer beside the M2.5 and the M4

The M3 is number 3, counting from the smallest, of the 7 DIN 6798 serrated lock washers published here, from M2 to M8.

• Inside diameter (d1): 3.2 mm on the M3 form J serrated lock washer, against 2.7 mm on the M2.5 and 4.3 mm on the M4.
• Outside diameter (d2): 6 mm on the M3 form J serrated lock washer, against 5.5 mm on the M2.5 and 8 mm on the M4.
• Sheet thickness (s1): 0.4 mm on the M3 form J serrated lock washer, against 0.4 mm on the M2.5 and 0.5 mm on the M4.
• Number of teeth (teeth_J): at least 7 on the M3 form J serrated lock washer, against at least 7 on the M2.5 and at least 8 on the M4.

The M3 form J serrated lock washer in its other forms

• M3 Serrated Lock Washer, Form A (External Teeth), DIN 6798: number of teeth at least 9.
• M3 Serrated Lock Washer, Form V (Countersunk), DIN 6798: sheet thickness 0.2 mm, number of teeth at least 12.

Other sizes

• One size smaller: M2.5 Serrated Lock Washer, Form J (Internal Teeth), DIN 6798, 2.7 mm hole, 5.5 mm OD.
• One size larger: M4 Serrated Lock Washer, Form J (Internal Teeth), DIN 6798, 4.3 mm hole, 8 mm OD.

Documents

• CC-DIN6798-DS-M3.pdf: M3 datasheet: values with levels, sources
• CC-DIN6798-SZ-M3.pdf: M3 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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