5x5 Parallel Key (Feather Key), Form A, DIN 6885

The 5x5 parallel key (DIN 6885, form A): key width 5 mm, key height 5 mm, edge chamfer 0.25 to 0.4 mm. Available as 15 lengths from 10 to 56 mm, each as simplified STEP.

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

• Also searched as: 5x5 key, 5x5 x 10 to 5x5 x 56 keys
• Model id: din6885-a-5x5
• Standard: DIN 6885:2021 · size 5x5

Lengths

Length (mm)	Part key	Simplified
10	din6885-a-5x5x10	STEP
12	din6885-a-5x5x12	STEP
14	din6885-a-5x5x14	STEP
16	din6885-a-5x5x16	STEP
18	din6885-a-5x5x18	STEP
20	din6885-a-5x5x20	STEP
22	din6885-a-5x5x22	STEP
25	din6885-a-5x5x25	STEP
28	din6885-a-5x5x28	STEP
32	din6885-a-5x5x32	STEP
36	din6885-a-5x5x36	STEP
40	din6885-a-5x5x40	STEP
45	din6885-a-5x5x45	STEP
50	din6885-a-5x5x50	STEP
56	din6885-a-5x5x56	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
b	Key width	4.97	5	5	4.985	midpoint of min–max	L1
h	Key height	4.97	5	5	4.985	midpoint of min–max	L1
s	Edge chamfer	0.25		0.4	0.325	midpoint of min–max	L1
d_shaft	Shaft diameter range	12		17	14.5	midpoint of min–max	L1
t1	Shaft keyway depth		3		3	nominal	L1
t2	Hub keyway depth		2.3		2.3	nominal	L1

Drawing

As a PDF: CC-DIN6885-SZ-5x5.pdf.

The 5x5 form A parallel key beside the 4x4 and the 6x6

The 5x5 is number 4 of the 5 DIN 6885 parallel keys published here, listed from 2x2 to 6x6.

• Key width (b): 5 mm on the 5x5 form A parallel key, against 4 mm on the 4x4 and 6 mm on the 6x6.
• Key height (h): 5 mm on the 5x5 form A parallel key, against 4 mm on the 4x4 and 6 mm on the 6x6.
• Edge chamfer (s): 0.25 to 0.4 mm on the 5x5 form A parallel key, against 0.16 to 0.25 mm on the 4x4 and 0.25 to 0.4 mm on the 6x6.
• Shaft diameter range (d_shaft): 12 to 17 mm on the 5x5 form A parallel key, against 10 to 12 mm on the 4x4 and 17 to 22 mm on the 6x6.
• Shaft keyway depth (t1): 3 mm on the 5x5 form A parallel key, against 2.5 mm on the 4x4 and 3.5 mm on the 6x6.
• Hub keyway depth (t2): 2.3 mm on the 5x5 form A parallel key, against 1.8 mm on the 4x4 and 2.8 mm on the 6x6.

The 5x5 form A parallel key in its other forms

• 5x5 Parallel Key (Feather Key), Form B, DIN 6885, with the same values.
• 5x5 Parallel Key (Feather Key), Form AB, DIN 6885, with the same values.

Other sizes

• One size smaller: 4x4 Parallel Key (Feather Key), Form A, DIN 6885.
• One size larger: 6x6 Parallel Key (Feather Key), Form A, DIN 6885.

Documents

• CC-DIN6885-DS-5x5.pdf: 5x5 datasheet: values with levels, lengths, sources
• CC-DIN6885-SZ-5x5.pdf: 5x5 drawing: this size's values on the views
• parts.json: the part record of every length (the platform contract)

Sources

fasten-it-din6885-1, fasten-it-uni6604, mikipulley-jis-b1301, roymech-din6885. Full citations: the method page and this size's datasheet.

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