Feather Keys | McMaster-Carr

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	Key Type Key Type	Show

Rounded

	Key Type Key Type	Hide

Additional/Replacement

Step

Tapered

Master

	System of Measurement System of Measurement

Inch

Metric

	Width Width

	Overall Length Overall Length

	Height Height

	Material Material

Stainless Steel

Steel

	Tolerance Rating Tolerance Rating

Undersized

Oversized

	Specifications Met Specifications Met

ANSI

DIN

	Minimum Hardness Minimum Hardness

Rockwell B50

Rockwell B87

Not Rated

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

DFARS Specialty Metals
Compliant

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Finish Finish

Zinc Plated

	Thread Size Thread Size

	Thread Pitch Thread Pitch

0.5 mm

0.7 mm

0.8 mm

	Rounded Keys Included Rounded Keys Included

	Number of Pieces Number of Pieces

	Container Features Container Features

Compartmented

Lid Chart

	Container Type Container Type

Plastic Box

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376 Products

Rounded Machine Keys

When installed, these keys fill oval keyways completely, reducing stress on the key and shaft. Using them in a closed keyway keeps them from sliding along the shaft axis. The rounded ends make it easy to slide gears, hubs, and other components into place. These are also known as feather keys. Machine keys are often the same material and as hard or harder than the shaft and other components with which they are used. To use a key as a sacrificial part, choose a softer key that will shear off when parts are exposed to excessive force, preventing damage to expensive equipment.

Steel keys offer good strength.

316 stainless steel keys have excellent corrosion resistance, but aren't as strong as steel keys. They may be mildly magnetic.

Slightly larger than the size listed in the table, oversized keys fit tightly in a keyway. Press them into place for use in high-torque applications or to replace a key in a worn keyway. Slightly smaller than the size listed in the table, undersized keys are the choice when you need a slightly looser fit or when you have an inconsistent keyway. Use them when parts need to be taken apart frequently, such as for maintenance or prototyping.

Keys that meet ANSI B17.1 specifications conform to ANSI standards for dimensions and tolerances.

Metric keys conform to DIN 6885 standards.

For technical drawings and 3-D models, click on a part number.

		Tolerance
Lg.	Tolerance Rating	Ht.	Wd.	Specifications Met	Pkg. Qty.		Pkg.
Zinc-Plated 1018-1045 Carbon Steel
1/8" × 1/8"
1/2"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	ANSI B17.1 Class 1	5	000000000	00000
3/4"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	ANSI B17.1 Class 1	5	000000000	0000
1"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	ANSI B17.1 Class 1	5	000000000	0000
3/16" × 3/16"
1/2"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	ANSI B17.1 Class 1	5	000000000	0000
3/4"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	ANSI B17.1 Class 1	5	000000000	0000
1"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	ANSI B17.1 Class 1	5	000000000	0000
1 1/4"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	ANSI B17.1 Class 1	5	000000000	0000
1 1/2"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	ANSI B17.1 Class 1	5	000000000	0000
1 3/4"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	ANSI B17.1 Class 1	5	000000000	0000
2"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	ANSI B17.1 Class 1	5	000000000	0000
1/4" × 1/4"
3/4"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	ANSI B17.1 Class 1	5	000000000	0000
1"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	ANSI B17.1 Class 1	5	000000000	0000
1 1/4"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	ANSI B17.1 Class 1	5	000000000	0000
1 1/2"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	ANSI B17.1 Class 1	5	000000000	0000
1 3/4"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	ANSI B17.1 Class 1	5	000000000	00000
2"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	ANSI B17.1 Class 1	5	000000000	00000
2 1/2"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	ANSI B17.1 Class 1	5	000000000	00000
3/8" × 3/8"
1"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	ANSI B17.1 Class 1	5	000000000	0000
1 1/2"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	ANSI B17.1 Class 1	5	000000000	00000
1/2" × 1/2"
1 1/2"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	ANSI B17.1 Class 1	1	000000000	0000
1018-1045 Carbon Steel
1/8" × 1/8"
1/2"	Oversized	0.000" to 0.001"	0.000" to 0.001"	ANSI B17.1 Class 2	5	000000000	0000
3/4"	Oversized	0.000" to 0.001"	0.000" to 0.001"	ANSI B17.1 Class 2	5	000000000	0000
1"	Oversized	0.000" to 0.001"	0.000" to 0.001"	ANSI B17.1 Class 2	5	000000000	0000
3/16" × 3/16"
1/2"	Oversized	0.000" to 0.002"	0.000" to 0.002"	__	5	000000000	0000
3/4"	Oversized	0.000" to 0.002"	0.000" to 0.002"	__	5	000000000	0000
1"	Oversized	0.000" to 0.001"	0.000" to 0.001"	ANSI B17.1 Class 2	5	000000000	0000
1 1/4"	Oversized	0.000" to 0.001"	0.000" to 0.001"	ANSI B17.1 Class 2	5	000000000	0000
1 1/2"	Oversized	0.000" to 0.002"	0.000" to 0.002"	__	5	000000000	0000
2"	Oversized	0.000" to 0.001"	0.000" to 0.001"	ANSI B17.1 Class 2	5	000000000	0000
1/4" × 1/4"
3/4"	Oversized	0.000" to 0.001"	0.000" to 0.001"	ANSI B17.1 Class 2	5	000000000	0000
1"	Oversized	0.000" to 0.001"	0.000" to 0.001"	ANSI B17.1 Class 2	5	000000000	0000
1 1/4"	Oversized	0.000" to 0.001"	0.000" to 0.001"	ANSI B17.1 Class 2	5	000000000	0000
1 1/2"	Oversized	0.000" to 0.001"	0.000" to 0.001"	ANSI B17.1 Class 2	5	000000000	0000
1 3/4"	Oversized	0.000" to 0.001"	0.000" to 0.001"	ANSI B17.1 Class 2	5	000000000	0000
2"	Oversized	0.000" to 0.001"	0.000" to 0.001"	ANSI B17.1 Class 2	5	000000000	0000
2 1/2"	Oversized	0.000" to 0.001"	0.000" to 0.001"	ANSI B17.1 Class 2	5	000000000	0000
3/8" × 3/8"
1"	Oversized	0.000" to 0.002"	0.000" to 0.002"	__	5	000000000	00000
1 1/4"	Oversized	0.000" to 0.002"	0.000" to 0.002"	__	5	000000000	00000
1 1/2"	Oversized	0.000" to 0.002"	0.000" to 0.002"	__	5	000000000	00000
2"	Oversized	0.000" to 0.002"	0.000" to 0.002"	__	1	000000000	0000
2 1/2"	Oversized	0.000" to 0.002"	0.000" to 0.002"	__	1	000000000	0000
1/2" × 1/2"
1"	Oversized	0.000" to 0.002"	0.000" to 0.002"	__	1	000000000	0000
1 1/2"	Oversized	0.000" to 0.001"	0.000" to 0.001"	ANSI B17.1 Class 2	1	000000000	0000
1 5/8"	Oversized	0.000" to 0.001"	0.000" to 0.001"	ANSI B17.1 Class 2	1	000000000	0000
2"	Oversized	0.000" to 0.002"	0.000" to 0.002"	__	1	000000000	0000
2 1/2"	Oversized	0.000" to 0.002"	0.000" to 0.002"	__	1	000000000	0000
3"	Oversized	0.000" to 0.002"	0.000" to 0.002"	__	1	000000000	0000
3 1/2"	Oversized	0.000" to 0.002"	0.000" to 0.002"	__	1	000000000	0000
2mm × 2mm
10mm	Undersized	-0.020mm to 0.000mm	-0.020mm to 0.000mm	DIN 6885	1	000000000	0000
3mm × 3mm
8mm	Undersized	-0.025mm to 0.000mm	-0.025mm to 0.000mm	DIN 6885	5	000000000	0000
10mm	Undersized	-0.020mm to 0.000mm	-0.020mm to 0.000mm	DIN 6885	1	000000000	0000
12mm	Undersized	-0.025mm to 0.000mm	-0.025mm to 0.000mm	DIN 6885	5	000000000	0000
14mm	Undersized	-0.025mm to 0.000mm	-0.025mm to 0.000mm	DIN 6885	5	000000000	0000
16mm	Undersized	-0.025mm to 0.000mm	-0.025mm to 0.000mm	DIN 6885	5	000000000	0000
18mm	Undersized	-0.025mm to 0.000mm	-0.025mm to 0.000mm	DIN 6885	5	000000000	0000
20mm	Undersized	-0.025mm to 0.000mm	-0.025mm to 0.000mm	DIN 6885	5	000000000	0000
25mm	Undersized	-0.025mm to 0.000mm	-0.025mm to 0.000mm	DIN 6885	5	000000000	0000
4mm × 4mm
8mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	10	000000000	00000
10mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	10	000000000	00000
12mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	10	000000000	0000
14mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	10	000000000	00000
16mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	10	000000000	0000
18mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	000000000	0000
20mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	10	000000000	0000
22mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	000000000	0000
25mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	10	000000000	00000
40mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	000000000	0000
56mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	000000000	0000
5mm × 5mm
10mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	10	000000000	0000
12mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	10	000000000	0000
14mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	10	000000000	0000
16mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	10	000000000	0000
18mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	10	000000000	00000
20mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	10	000000000	0000
22mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	000000000	0000
25mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	10	000000000	0000
28mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	000000000	0000
30mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	000000000	0000
32mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	000000000	0000
36mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	000000000	0000
40mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	000000000	0000
45mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	000000000	0000
50mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	000000000	0000
6mm × 6mm
10mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	000000000	0000
12mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	000000000	0000
14mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	000000000	0000
16mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	10	000000000	00000
18mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	000000000	0000
20mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	10	000000000	0000
22mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	000000000	0000
25mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	10	000000000	00000
30mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	10	000000000	00000
32mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	000000000	0000
36mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	10	000000000	00000
38mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	000000000	0000
40mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	10	000000000	00000
45mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	000000000	0000
50mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	000000000	00000
60mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	000000000	0000
70mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	000000000	0000
7mm × 8mm
20mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	0000
22mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	0000
25mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	0000
28mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	0000
30mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	0000
32mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	0000
36mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	0000
40mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	0000
45mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	0000
48mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	00000
50mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	0000
56mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	00000
60mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	00000
63mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	00000
65mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	00000
70mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	00000
75mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	00000
90mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	00000
8mm × 10mm
20mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	0000
22mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	0000
25mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	0000
28mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	0000
30mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	0000
32mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	0000
36mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	0000
38mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	0000
40mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	0000
45mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	00000
48mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	00000
50mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	00000
55mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	00000
56mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	00000
60mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	00000
63mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	00000
70mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	00000
80mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	00000
90mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	00000
100mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	00000
110mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	000000000	00000
8mm × 12mm
25mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	5	000000000	0000
30mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	5	000000000	0000
36mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	5	000000000	00000
40mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	5	000000000	00000
45mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	5	000000000	00000
50mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	5	000000000	00000
56mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	5	000000000	00000
60mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	5	000000000	00000
63mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	5	000000000	00000
65mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	5	000000000	00000
68mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	5	000000000	00000
70mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	5	000000000	00000
80mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	5	000000000	00000
100mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	0000
110mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	0000
9mm × 14mm
30mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	0000
35mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	0000
36mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	0000
40mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	0000
45mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	0000
50mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	0000
56mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	0000
60mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	0000
63mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	0000
65mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	0000
70mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	0000
80mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	0000
90mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	0000
100mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	0000
110mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	0000
120mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	0000
125mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	0000
10mm × 16mm
45mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	0000
50mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	0000
56mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	0000
70mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	0000
80mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	0000
100mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	0000
110mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	00000
11mm × 18mm
50mm	Undersized	-0.110mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	0000
56mm	Undersized	-0.110mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	0000
63mm	Undersized	-0.110mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	0000
70mm	Undersized	-0.110mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	0000
80mm	Undersized	-0.110mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	0000
90mm	Undersized	-0.110mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	00000
100mm	Undersized	-0.110mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	00000
110mm	Undersized	-0.110mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	000000000	00000
12mm × 20mm
56mm	Undersized	-0.110mm to 0.000mm	-0.052mm to 0.000mm	DIN 6885	1	000000000	0000
63mm	Undersized	-0.110mm to 0.000mm	-0.052mm to 0.000mm	DIN 6885	1	000000000	0000
70mm	Undersized	-0.110mm to 0.000mm	-0.052mm to 0.000mm	DIN 6885	1	000000000	00000
80mm	Undersized	-0.110mm to 0.000mm	-0.052mm to 0.000mm	DIN 6885	1	000000000	00000
90mm	Undersized	-0.110mm to 0.000mm	-0.052mm to 0.000mm	DIN 6885	1	000000000	00000
100mm	Undersized	-0.110mm to 0.000mm	-0.052mm to 0.000mm	DIN 6885	1	000000000	00000
110mm	Undersized	-0.110mm to 0.000mm	-0.052mm to 0.000mm	DIN 6885	1	000000000	00000
316 Stainless Steel
2mm × 2mm
10mm	Undersized	-0.025mm to 0.000mm	-0.025mm to 0.000mm	DIN 6885	5	0000000	00000
20mm	Undersized	-0.025mm to 0.000mm	-0.025mm to 0.000mm	DIN 6885	5	0000000	00000
3mm × 3mm
8mm	Undersized	-0.025mm to 0.000mm	-0.025mm to 0.000mm	DIN 6885	5	0000000	0000
10mm	Undersized	-0.025mm to 0.000mm	-0.025mm to 0.000mm	DIN 6885	5	0000000	00000
12mm	Undersized	-0.025mm to 0.000mm	-0.025mm to 0.000mm	DIN 6885	5	0000000	00000
14mm	Undersized	-0.025mm to 0.000mm	-0.025mm to 0.000mm	DIN 6885	5	0000000	00000
15mm	Undersized	-0.025mm to 0.000mm	-0.025mm to 0.000mm	DIN 6885	5	0000000	00000
16mm	Undersized	-0.025mm to 0.000mm	-0.025mm to 0.000mm	DIN 6885	5	0000000	00000
18mm	Undersized	-0.025mm to 0.000mm	-0.025mm to 0.000mm	DIN 6885	5	0000000	00000
20mm	Undersized	-0.025mm to 0.000mm	-0.025mm to 0.000mm	DIN 6885	5	0000000	00000
22mm	Undersized	-0.025mm to 0.000mm	-0.025mm to 0.000mm	DIN 6885	5	0000000	00000
25mm	Undersized	-0.025mm to 0.000mm	-0.025mm to 0.000mm	DIN 6885	5	0000000	00000
30mm	Undersized	-0.025mm to 0.000mm	-0.025mm to 0.000mm	DIN 6885	5	0000000	00000
36mm	Undersized	-0.025mm to 0.000mm	-0.025mm to 0.000mm	DIN 6885	5	0000000	00000
40mm	Undersized	-0.025mm to 0.000mm	-0.025mm to 0.000mm	DIN 6885	5	0000000	00000
4mm × 4mm
8mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	0000
10mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	0000
12mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	00000
14mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	00000
15mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	00000
16mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	00000
18mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	00000
20mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	00000
22mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	00000
25mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	00000
28mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	00000
32mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	00000
35mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	00000
36mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	00000
40mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	00000
45mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	00000
50mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	00000
5mm × 5mm
8mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	00000
10mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	00000
12mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	00000
14mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	00000
15mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	00000
16mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	00000
18mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	0000000	0000
20mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	000000000	0000
22mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	00000
25mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	0000000	0000
28mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	00000
30mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	000000000	0000
35mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	00000
36mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	0000000	0000
40mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	0000000	0000
45mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	0000000	0000
50mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	0000000	0000
60mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	0000000	0000
63mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	0000000	0000
70mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	0000000	0000
6mm × 6mm
10mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	00000
12mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	0000000	0000
14mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	00000
15mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	00000
16mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	0000000	0000
18mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	00000
20mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	000000000	0000
22mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	5	0000000	00000
25mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	000000000	0000
28mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	0000000	0000
30mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	000000000	0000
32mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	0000000	0000
35mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	0000000	0000
36mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	0000000	0000
40mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	0000000	0000
50mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	0000000	0000
55mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	0000000	0000
60mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	0000000	0000
70mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	0000000	0000
80mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	00000000	0000
90mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	00000000	0000
100mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	00000000	0000
110mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	00000000	00000
120mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	DIN 6885	1	00000000	00000
7mm × 8mm
12mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	00000000	00000
14mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	5	00000000	00000
15mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	0000
16mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	0000
18mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	0000
20mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	0000
22mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	0000
25mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	0000
28mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	0000
30mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	0000
32mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	0000
35mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	0000
36mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	0000
40mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	0000
45mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	0000
50mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	0000
55mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	0000
60mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	0000
63mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	0000
70mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	00000
80mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	00000
85mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	00000
90mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	00000
100mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	00000
130mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	00000
8mm × 10mm
16mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	0000
25mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	0000
28mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	0000
30mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	0000
35mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	0000
36mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	0000
40mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	0000
45mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	00000
50mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	00000
56mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	00000
60mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	00000
70mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	00000
75mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	00000
80mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	00000
100mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	00000
110mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	00000
125mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	DIN 6885	1	00000000	00000
8mm × 12mm
20mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	00000000	0000
28mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	00000000	0000
32mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	00000000	0000
35mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	00000000	00000
36mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	00000000	00000
40mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	00000000	00000
45mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	00000000	00000
55mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	00000000	00000
60mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	00000000	00000
75mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	00000000	00000
80mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	00000000	00000
85mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	00000000	00000
90mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	00000000	00000
100mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	00000000	00000
110mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	00000000	00000
125mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	00000000	00000
140mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	00000000	00000
200mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	DIN 6885	1	00000000	00000

Tapped Rounded Machine Keys

Thread a screw through the tapped hole to pop these keys out of a keyway. When installed, they fill oval keyways completely, reducing stress on the key and shaft. Using them in a closed keyway keeps them from sliding along the shaft axis. The rounded ends make it easy to slide gears, hubs, and other components into place. To install, press them in to place. Use them for permanent or high-torque applications, or to replace a key in a worn keyway. Keys are made of steel.

Oversized keys create a tight fit. They conform to ANSI B17.1 Class 2 standards for dimensions and tolerances.

Undersized keys are good when you need a slightly looser fit or when you have an inconsistent keyway. Use them with parts you take apart frequently, such as for maintenance or prototyping. They meet DIN 6885 dimensional standards for undersized keys.

For technical drawings and 3-D models, click on a part number.

		Tolerance
Lg.	Tolerance Rating	Ht.	Wd.	Thread Size	Specifications Met		Each
1018-1045 Carbon Steel
3/16" × 3/16"
1/2"	Oversized	0.000" to 0.001"	0.000" to 0.001"	4-40	ANSI B17.1 Class 2	000000000	00000
3/4"	Oversized	0.000" to 0.001"	0.000" to 0.001"	4-40	ANSI B17.1 Class 2	000000000	0000
1"	Oversized	0.000" to 0.001"	0.000" to 0.001"	4-40	ANSI B17.1 Class 2	000000000	0000
1 1/2"	Oversized	0.000" to 0.001"	0.000" to 0.001"	4-40	ANSI B17.1 Class 2	000000000	0000
1 3/4"	Oversized	0.000" to 0.001"	0.000" to 0.001"	4-40	ANSI B17.1 Class 2	000000000	0000
2"	Oversized	0.000" to 0.001"	0.000" to 0.001"	4-40	ANSI B17.1 Class 2	000000000	0000
1/4" × 1/4"
3/4"	Oversized	0.000" to 0.001"	0.000" to 0.001"	6-32	ANSI B17.1 Class 2	000000000	0000
1"	Oversized	0.000" to 0.001"	0.000" to 0.001"	6-32	ANSI B17.1 Class 2	000000000	0000
1 1/4"	Oversized	0.000" to 0.001"	0.000" to 0.001"	6-32	ANSI B17.1 Class 2	000000000	0000
1 1/2"	Oversized	0.000" to 0.001"	0.000" to 0.001"	6-32	ANSI B17.1 Class 2	000000000	0000
1 3/4"	Oversized	0.000" to 0.001"	0.000" to 0.001"	6-32	ANSI B17.1 Class 2	000000000	0000
2"	Oversized	0.000" to 0.001"	0.000" to 0.001"	6-32	ANSI B17.1 Class 2	000000000	0000
2 1/2"	Oversized	0.000" to 0.001"	0.000" to 0.001"	6-32	ANSI B17.1 Class 2	000000000	0000
3/8" × 3/8"
1 1/2"	Oversized	0.000" to 0.001"	0.000" to 0.001"	10-24	ANSI B17.1 Class 2	000000000	0000
2"	Oversized	0.000" to 0.001"	0.000" to 0.001"	10-24	ANSI B17.1 Class 2	000000000	0000
1/2" × 1/2"
2"	Oversized	0.000" to 0.001"	0.000" to 0.001"	1/4"-20	ANSI B17.1 Class 2	000000000	0000
5 mm × 5 mm
20mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	M3 × 0.5 mm	DIN 6885	000000000	0000
25mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	M3 × 0.5 mm	DIN 6885	000000000	0000
40mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	M3 × 0.5 mm	DIN 6885	000000000	0000
6 mm × 6 mm
20mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	M3 × 0.5 mm	DIN 6885	000000000	0000
25mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	M3 × 0.5 mm	DIN 6885	000000000	0000
30mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	M3 × 0.5 mm	DIN 6885	000000000	0000
32mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	M3 × 0.5 mm	DIN 6885	000000000	0000
50mm	Undersized	-0.030mm to 0.000mm	-0.030mm to 0.000mm	M3 × 0.5 mm	DIN 6885	000000000	0000
7 mm × 8 mm
20mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	M3 × 0.5 mm	DIN 6885	000000000	0000
28mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	M3 × 0.5 mm	DIN 6885	000000000	0000
30mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	M3 × 0.5 mm	DIN 6885	000000000	0000
32mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	M3 × 0.5 mm	DIN 6885	000000000	0000
36mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	M3 × 0.5 mm	DIN 6885	000000000	0000
40mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	M3 × 0.5 mm	DIN 6885	000000000	0000
45mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	M3 × 0.5 mm	DIN 6885	000000000	0000
50mm	Undersized	-0.090mm to 0.000mm	-0.036mm to 0.000mm	M3 × 0.5 mm	DIN 6885	000000000	0000
8 mm × 10 mm
20mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	M3 × 0.5 mm	DIN 6885	000000000	0000
30mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	M3 × 0.5 mm	DIN 6885	000000000	0000
36mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	M3 × 0.5 mm	DIN 6885	000000000	0000
40mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	M3 × 0.5 mm	DIN 6885	000000000	0000
50mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	M3 × 0.5 mm	DIN 6885	000000000	0000
56mm	Undersized	-0.036mm to 0.000mm	-0.036mm to 0.000mm	M3 × 0.5 mm	DIN 6885	000000000	0000
8 mm × 12 mm
25mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	M4 × 0.7 mm	DIN 6885	000000000	0000
40mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	M4 × 0.7 mm	DIN 6885	000000000	0000
50mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	M4 × 0.7 mm	DIN 6885	000000000	0000
56mm	Undersized	-0.036mm to 0.000mm	-0.043mm to 0.000mm	M4 × 0.7 mm	DIN 6885	000000000	0000
9 mm × 14 mm
30mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	M5 × 0.8 mm	DIN 6885	000000000	0000
36mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	M5 × 0.8 mm	DIN 6885	000000000	0000
50mm	Undersized	-0.090mm to 0.000mm	-0.043mm to 0.000mm	M5 × 0.8 mm	DIN 6885	000000000	00000

Undersized Machine Key Assortments

Key Assortment

These keys are slightly undersized to fit in standard keyways. Made from zinc-plated steel, they resist corrosion in wet environments.

For technical drawings and 3-D models, click on a part number.

Rounded Key Assortments

Rounded Key

Zinc-Plated Steel
Number of Pieces	Rounded Keys Included	Size Tolerance, mm	Container Type		Each
25	4 mm × 4 mm × 80 mm Lg. (2 Pieces) 5 mm × 5 mm × 80 mm Lg. (3 Pieces) 6 mm × 6 mm × 80 mm Lg. (2 Pieces) 7 mm × 7 mm × 80 mm Lg. (2 Pieces) 8 mm × 7 mm × 80 mm Lg. (2 Pieces) 8 mm × 8 mm × 80 mm Lg. (3 Pieces) 10 mm × 8 mm × 80 mm Lg. (2 Pieces) 10 mm × 10 mm × 80 mm Lg. (2 Pieces) 12 mm × 8 mm × 80 mm Lg. (2 Pieces) 12 mm × 12 mm × 80 mm Lg. (2 Pieces) 16 mm × 10 mm × 80 mm Lg. (1 Piece) 18 mm × 11 mm × 80 mm Lg. (1 Piece) 20 mm × 12 mm × 80 mm Lg. (1 Piece)	-0.03 to 0	Plastic Box	000000000	0000000
58	4 mm × 4 mm × 40 mm Lg. (8 Pieces) 5 mm × 5 mm × 40 mm Lg. (8 Pieces) 6 mm × 6 mm × 40 mm Lg. (10 Pieces) 8 mm × 7 mm × 40 mm Lg. (4 Pieces) 8 mm × 8 mm × 40 mm Lg. (10 Pieces) 10 mm × 8 mm × 40 mm Lg. (4 Pieces) 10 mm × 10 mm × 40 mm Lg. (4 Pieces) 12 mm × 12 mm × 40 mm Lg. (4 Pieces) 14 mm × 9 mm × 40 mm Lg. (4 Pieces) 16 mm × 10 mm × 40 mm Lg. (2 Pieces)	-0.03 to 0	Plastic Box	000000000	000000