Metric Push Nuts | McMaster-Carr

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About Nuts, Materials, and Finishes

No groove required—press these rings onto the end of a shaft. Use them on unhardened shafts that are softer than the push ring. The ring bites into the metal to form an interference grip. Styles A, B, and C have teeth that dig into the shaft material, so expect minor scratching. Use a push nut installation tool (sold separately) to install rings, or install them manually.

1050 spring steel and 1060-1090 spring steel rings are an economical choice with good strength. A black finish is the result of a heat treatment to darken them—making them ideal for blending into dark backgrounds. However, these rings will rust if exposed to moisture. Black-phosphate finish is mildly corrosion resistant in dry environments. In wet environments, a zinc yellow-chromate plated finish has some corrosion resistance, and a zinc chromate plated finish has good corrosion resistance.

15-7 PH stainless steel rings have high strength with good corrosion resistance. Rings are passivated for added protection against corrosion.

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

Metric

		Ring
Style	For OD, mm	OD, mm	Thick., mm	Ht., mm	Min. Installation Dp., mm	Passivation	Min. Hardness	Magnetic Properties	Pkg. Qty.		Pkg.
Black-Phosphate 1060-1090 Spring Steel
A	3	8	0.25	__	1.5	__	Rockwell C45	Magnetic	100	000000000	00000
A	4	9	0.25	__	2	__	Rockwell C45	Magnetic	100	000000000	0000
A	5	10	0.25	__	2	__	Rockwell C45	Magnetic	100	000000000	0000
A	6	11	0.25	__	2.5	__	Rockwell C45	Magnetic	100	000000000	0000
A	7	12	0.25	__	2.5	__	Rockwell C45	Magnetic	100	000000000	0000
A	8	13	0.25	__	2.5	__	Rockwell C45	Magnetic	100	000000000	0000
A	9	14	0.3	__	2.5	__	Rockwell C45	Magnetic	100	000000000	00000
A	10	16	0.3	__	3	__	Rockwell C45	Magnetic	100	000000000	00000
A	12	18	0.3	__	3	__	Rockwell C45	Magnetic	100	000000000	00000
A	14	20.5	0.3	__	3	__	Rockwell C45	Magnetic	100	000000000	00000
A	15	23	0.5	__	3	__	Rockwell C45	Magnetic	25	000000000	0000
A	16	24.5	0.4	__	3	__	Rockwell C45	Magnetic	50	000000000	00000
A	17	26	0.5	__	3.5	__	Rockwell C45	Magnetic	25	000000000	0000
A	18	27	0.4	__	3.5	__	Rockwell C45	Magnetic	50	000000000	00000
A	20	29	0.5	__	3.5	__	Rockwell C45	Magnetic	50	000000000	00000
A	22	31	0.5	__	3.5	__	Rockwell C45	Magnetic	50	000000000	00000
A	25	34	0.5	__	4	__	Rockwell C45	Magnetic	25	000000000	00000
Black-Phosphate 1050 Spring Steel
B	4	11.1	__	1.5	6.5	__	Rockwell C38	Magnetic	100	000000000	00000
B	5	11.1	__	1.5	6.5	__	Rockwell C38	Magnetic	100	000000000	00000
Zinc-Chromate-Plated 1060-1090 Spring Steel
A	3	8	0.25	__	1.5	__	Rockwell C45	Magnetic	100	000000000	00000
A	4	9	0.25	__	2	__	Rockwell C45	Magnetic	100	000000000	00000
A	5	10	0.25	__	2	__	Rockwell C45	Magnetic	100	000000000	00000
A	6	11	0.25	__	2.5	__	Rockwell C45	Magnetic	100	000000000	00000
A	7	12	0.25	__	2.5	__	Rockwell C45	Magnetic	50	000000000	00000
A	10	16	0.3	__	3	__	Rockwell C45	Magnetic	50	000000000	00000
A	12	18	0.3	__	3	__	Rockwell C45	Magnetic	50	000000000	00000
A	16	24.5	0.4	__	3	__	Rockwell C45	Magnetic	10	000000000	0000
A	20	29	0.5	__	3.5	__	Rockwell C45	Magnetic	10	000000000	00000
A	22	31	0.5	__	3.5	__	Rockwell C45	Magnetic	10	000000000	00000
Zinc-Plated 1050 Spring Steel
B	6	13.5	__	1.8	6.5	__	Rockwell C38	Magnetic	100	000000000	00000
Black Oxide 1060-1090 Spring Steel
C	1.5	5	__	1.3	1.5	__	Rockwell C47	Magnetic	100	000000000	00000
C	2	7	__	1.7	2	__	Rockwell C47	Magnetic	200	000000000	00000
C	3	10.5	__	2.2	2.5	__	Rockwell C47	Magnetic	100	000000000	00000
C	3.5	11	__	2.2	2.5	__	Rockwell C47	Magnetic	100	000000000	00000
C	4	12	__	2.2	2.5	__	Rockwell C47	Magnetic	100	000000000	00000
C	5	14	__	2.5	3	__	Rockwell C47	Magnetic	100	000000000	00000
C	6	16	__	3	3.5	__	Rockwell C47	Magnetic	100	000000000	00000
C	7	17	__	3	3.5	__	Rockwell C47	Magnetic	100	000000000	00000
C	8	18	__	3	3.5	__	Rockwell C47	Magnetic	100	000000000	00000
C	10	20	__	3	3.5	__	Rockwell C47	Magnetic	25	000000000	0000
Black Oxide 1050 Spring Steel
C	1	4	__	1.3	1.5	__	Rockwell C47	Magnetic	50	000000000	0000
C	2.5	8.5	__	1.7	2	__	Rockwell C47	Magnetic	50	000000000	0000
C	4.5	13	__	2.5	3	__	Rockwell C47	Magnetic	50	000000000	0000
C	5.5	14	__	2.5	3	__	Rockwell C47	Magnetic	25	000000000	0000
15-7 PH Stainless Steel
A	3	8	0.25	__	1.5	Passivated	Rockwell C44	May Be Mildly Magnetic	10	000000000	00000
A	5	10	0.25	__	2	Passivated	Rockwell C44	May Be Mildly Magnetic	5	000000000	00000
A	6	11	0.25	__	2.5	Passivated	Rockwell C44	May Be Mildly Magnetic	5	000000000	00000
A	9	14	0.3	__	2.5	Passivated	Rockwell C44	May Be Mildly Magnetic	5	000000000	00000
A	10	16	0.3	__	3	Passivated	Rockwell C44	May Be Mildly Magnetic	5	000000000	00000

Side-Mount External Retaining Rings

Also known as E-style rings, these rings have three prongs that make contact with the shaft and provide a wider shoulder than other external rings for a larger retaining surface. Use a side-mount retaining ring tool (sold separately) to push them into the groove from the side of the shaft. Ring OD is measured with the ring uninstalled.

1060-1090 spring steel and spring steel rings are an economical choice with good strength. A black-phosphate finish is mildly corrosion resistant in dry environments. DIN 1.4122 stainless steel rings withstand wear caused by abrasion, similar to 400 series stainless steel. Rings are passivated for added protection against corrosion.

Thrust load capacity, also known as PR, is based on using a shaft that is harder than the ring.

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

Metric

	For Groove		Ring
For OD, mm	Dia., mm	Wd., mm	OD, mm	Thick., mm	Min. Hardness	Thrust Load Capacity, lbs.	Magnetic Properties	Specifications Met	Pkg. Qty.		Pkg.
Black-Phosphate 1060-1090 Spring Steel
3-4	2.3	0.64	5.9	0.6	Rockwell C46	110	Magnetic	DIN 6799	100	000000000	00000
4-5	3.2	0.64	6.9	0.6	Rockwell C46	140	Magnetic	DIN 6799	100	000000000	0000
5-7	4	0.74	8.85	0.7	Rockwell C46	210	Magnetic	DIN 6799	100	000000000	0000
6-8	5	0.74	10.85	0.7	Rockwell C46	250	Magnetic	DIN 6799	100	000000000	0000
7-9	6	0.74	11.8	0.7	Rockwell C46	300	Magnetic	DIN 6799	100	000000000	0000
8-11	7	0.94	13.8	0.9	Rockwell C46	400	Magnetic	DIN 6799	100	000000000	0000
9-12	8	1.05	15.75	1	Rockwell C46	560	Magnetic	DIN 6799	100	000000000	00000
10-14	9	1.15	18.2	1.1	Rockwell C46	670	Magnetic	DIN 6799	100	000000000	00000
11-15	10	1.25	19.7	1.2	Rockwell C46	780	Magnetic	DIN 6799	50	000000000	0000
13-18	12	1.35	22.7	1.3	Rockwell C46	1,050	Magnetic	DIN 6799	50	000000000	00000
16-24	15	1.55	28.7	1.5	Rockwell C46	1,750	Magnetic	DIN 6799	25	000000000	00000
20-31	19	1.8	36.5	1.75	Rockwell C46	2,470	Magnetic	DIN 6799	10	000000000	0000
25-38	24	2.05	43.5	2	Rockwell C46	3,370	Magnetic	DIN 6799	10	000000000	00000
32-42	30	2.55	51.3	2.5	Rockwell C46	5,170	Magnetic	DIN 6799	5	000000000	0000
Black-Phosphate Spring Steel
1-1.4	0.8	0.24	1.95	0.2	Rockwell C46	10	Magnetic	DIN 6799	50	000000000	0000
1.4-2	1.2	0.34	2.9	0.3	Rockwell C46	20	Magnetic	DIN 6799	100	000000000	0000
2-2.5	1.5	0.44	3.9	0.4	Rockwell C46	40	Magnetic	DIN 6799	100	000000000	00000
2.5-3	1.9	0.54	4.4	0.5	Rockwell C46	70	Magnetic	DIN 6799	100	000000000	0000
DIN 1.4122 Stainless Steel
1.4-2	1.2	0.34	2.9	0.3	Not Rated	20	Magnetic	DIN 6799	50	000000000	0000
2-2.5	1.5	0.44	3.9	0.4	Not Rated	40	Magnetic	DIN 6799	50	000000000	0000
2.5-3	1.9	0.54	4.4	0.5	Not Rated	70	Magnetic	DIN 6799	50	000000000	0000
3-4	2.3	0.64	5.9	0.6	Rockwell C44	110	Magnetic	DIN 6799	50	000000000	0000
4-5	3.2	0.64	6.9	0.6	Rockwell C44	140	Magnetic	DIN 6799	50	000000000	0000
5-7	4	0.74	8.85	0.7	Rockwell C44	210	Magnetic	DIN 6799	50	000000000	00000
6-8	5	0.74	10.85	0.7	Rockwell C44	250	Magnetic	DIN 6799	50	000000000	00000
7-9	6	0.74	11.8	0.7	Rockwell C44	300	Magnetic	DIN 6799	25	000000000	0000
8-11	7	0.94	13.8	0.9	Rockwell C44	400	Magnetic	DIN 6799	25	000000000	00000
9-12	8	1.05	15.75	1	Rockwell C44	560	Magnetic	DIN 6799	10	000000000	0000
10-14	9	1.15	18.2	1.1	Rockwell C44	670	Magnetic	DIN 6799	10	000000000	0000
11-15	10	1.25	19.7	1.2	Rockwell C44	780	Magnetic	DIN 6799	5	000000000	0000
13-18	12	1.35	22.7	1.3	Rockwell C44	1,050	Magnetic	DIN 6799	5	000000000	0000
16-24	15	1.55	28.7	1.5	Rockwell C44	1,750	Magnetic	DIN 6799	1	000000000	0000

Push-On Internal Retaining Rings

No groove required—these rings have teeth that firmly grip the bore. Use them in unhardened shafts that are softer than the push ring. The metal must be soft enough for the ring to form an interference grip. Not recommended for use with nickel-, chrome-, or nitride-coated shafts.

1060-1090 spring steel rings are an economical choice with good strength. The black-phosphate finish is mildly corrosion resistant in dry environments.

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

Metric

	Ring
For ID, mm	ID, mm	Thick., mm	Min. Installation Dp., mm	Min. Hardness	Magnetic Properties	Pkg. Qty.		Pkg.
Black-Phosphate 1060-1090 Spring Steel
8	4	0.25	2	Rockwell C45	Magnetic	100	000000000	00000
10	5	0.25	2	Rockwell C45	Magnetic	50	000000000	00000
12	6	0.25	2.5	Rockwell C45	Magnetic	100	000000000	0000
14	8	0.3	2.5	Rockwell C45	Magnetic	100	000000000	00000
15	9	0.3	2.5	Rockwell C45	Magnetic	50	000000000	00000
16	10	0.3	2.5	Rockwell C45	Magnetic	100	000000000	00000
17	11	0.3	3	Rockwell C45	Magnetic	50	000000000	00000
18	10.5	0.4	3	Rockwell C45	Magnetic	50	000000000	0000
20	11	0.4	3.5	Rockwell C45	Magnetic	50	000000000	00000
22	13	0.5	3.5	Rockwell C45	Magnetic	50	000000000	00000
24	15	0.5	3.5	Rockwell C45	Magnetic	50	000000000	00000
25	16	0.5	3.5	Rockwell C45	Magnetic	25	000000000	0000
26	17	0.5	3.5	Rockwell C45	Magnetic	25	000000000	00000
30	21	0.5	4	Rockwell C45	Magnetic	25	000000000	00000
35	25	0.5	4	Rockwell C45	Magnetic	10	000000000	0000
40	30	0.5	4	Rockwell C45	Magnetic	10	000000000	0000
50	39	0.5	4	Rockwell C45	Magnetic	10	000000000	0000

Internal Teeth Retaining Rings

With teeth along the inside, these retaining rings hold chamfered shafts inside the housing of your equipment. That’s why they’re commonly used to retain shafts in roller drum systems and other heavy duty equipment. Made from spring steel, squeeze them into or remove them from the groove with retaining ring pliers. These rings have a black-phosphate finish that won’t corrode in dry environments. All meet DIN 984, an international standard for retaining ring specifications.

Ring OD is measured with the ring uninstalled.

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

	For Groove		Ring
For ID, mm	Dia., mm	Wd., mm	OD, mm	Thick., mm	Number of Teeth	Min. Hardness	Thrust Load Capacity, lbs.	Magnetic Properties	Specifications Met	Pkg. Qty.		Pkg.
Black-Phosphate 1060-1090 Spring Steel
16	16.8	1.1	17.3	1	6	Rockwell C47	1,230	Magnetic	DIN 984	25	000000000	00000
18	19	1.1	19.5	1	6	Rockwell C47	1,460	Magnetic	DIN 984	25	000000000	0000
24	25.2	1.3	25.9	1.2	6	Rockwell C47	3,120	Magnetic	DIN 984	25	000000000	0000
26	27.2	1.3	28.5	1.2	6	Rockwell C47	3,100	Magnetic	DIN 984	25	000000000	0000
28	29.4	1.3	30.1	1.2	6	Rockwell C47	2,980	Magnetic	DIN 984	25	000000000	0000
30	31.4	1.3	32.1	1.2	6	Rockwell C47	3,070	Magnetic	DIN 984	25	000000000	00000
32	33.7	1.3	34.4	1.2	6	Rockwell C47	3,100	Magnetic	DIN 984	25	000000000	00000
35	37	1.6	37.8	1.5	6	Rockwell C47	6,040	Magnetic	DIN 984	25	000000000	00000
36	38	1.6	38.8	1.5	6	Rockwell C47	5,930	Magnetic	DIN 984	10	000000000	0000
40	42.5	1.85	43.5	1.75	6	Rockwell C47	10,020	Magnetic	DIN 984	10	000000000	00000
44	46.5	1.85	47.5	1.75	6	Rockwell C47	9,730	Magnetic	DIN 984	10	000000000	00000
45	47.5	1.85	48.5	1.75	6	Rockwell C47	9,680	Magnetic	DIN 984	10	000000000	00000
50	53	2.15	54.2	2	6	Rockwell C44	13,660	Magnetic	DIN 984	1	000000000	0000
52	55	2.15	56.2	2	6	Rockwell C44	13,530	Magnetic	DIN 984	10	000000000	00000
54	57	2.15	58.2	2	4	Rockwell C44	13,530	Magnetic	DIN 984	10	000000000	00000
55	58	2.15	59.2	2	6	Rockwell C44	13,550	Magnetic	DIN 984	10	000000000	00000
57	60	2.15	61.2	2	6	Rockwell C44	13,660	Magnetic	DIN 984	5	000000000	0000
62	65	2.15	66.2	2	8	Rockwell C44	13,690	Magnetic	DIN 984	5	000000000	0000
65	68	2.65	69.2	2.5	8	Rockwell C44	27,200	Magnetic	DIN 984	5	000000000	00000
72	75	2.65	76.5	2.5	8	Rockwell C44	26,750	Magnetic	DIN 984	1	000000000	0000
80	83.5	2.65	85.5	2.5	8	Rockwell C44	26,970	Magnetic	DIN 984	5	000000000	00000
90	93.5	3.15	95.5	3	8	Rockwell C44	44,730	Magnetic	DIN 984	1	000000000	00000

Round Push Nuts

With flexible teeth that slide smoothly over threads of any pitch, these push nuts can be used as a standalone nut for light-duty applications or as a jam nut to keep hex nuts and bolts securely fastened. All nuts have a finish that protects the steel from corrosion in wet environments.

Nuts finished with black phosphate have a dark surface color.

Installation tools (sold separately) save you time when you’re installing nuts back-to-back. They have a magnetized tip, so nuts won’t fall off while you’re sliding them on.

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

Push Nuts						Installation Tools
For Screw Size	OD	Ht.	Pkg. Qty.		Pkg.		Each
Zinc-Plated Steel
M5	11mm	1.7mm	100	000000000	00000	000000000	000000
M6	13mm	1.9mm	100	000000000	0000	000000000	00000
M6	17mm	2mm	100	000000000	0000	000000000	00000
M8	16mm	2mm	100	000000000	0000	000000000	00000
M10	24mm	2.6mm	50	000000000	0000	000000000	00000
M12	21mm	3.2mm	50	000000000	0000	000000000	00000
Black-Phosphate Steel
M10	20mm	2.3mm	50	000000000	0000	000000000	00000
M12	21mm	3.2mm	50	000000000	0000	000000000	00000
M14	25mm	3.2mm	50	000000000	0000	000000	00

Installation Tools for Press-Fit Nuts

Use these tools to install press-fit nuts by hand. They include one hand tool, seven hole punches and dies, five fastener anvils, one flat punch, one punch adapter bushing, and one edge-depth guide.

Metric
For Thread Size	Max. Force, lbs.	Wt., lbs.		Each
M2, M2.5, M3, M3.5, M4, M5	2,500	2.75	000000000	0000000

Side-Mount External Retaining Ring Assortments

E-Style Side Mount

Also known as E-Style and C-style rings, slide these into the groove from the side of the shaft. They provide a wider shoulder than other external retaining rings for a larger retaining surface. All are magnetic.

Black-phosphate steel retaining rings resist corrosion in dry environments.

Metric
Number of Pieces	Sizes Included	Retaining Ring Style	Container Type	Specifications Met		Each
Black-Phosphate Steel
300	For 3 mm to 20 mm OD	E	Plastic Box	DIN 6799	000000000	000000

Push Nut Installation Tools

Push nuts and retaining rings over threaded fasteners and shafts. These tools have a magnetized tip so nuts don't fall off as you slide them on.

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

				Shaft
For Shaft Dia.	For Screw Size	Bolt Clearance	Overall Lg.	Lg.	O'all Wd.	Material	Handle Material	Fastener-Holding Mechanism		Each
5/64", 2 mm	No. 0, M2	13/16"	3 1/2"	2 1/4"	1/4"	Steel	Plastic	Magnet	000000000	000000
3/32", 2.5 mm	No. 2, M2.5	1 1/8"	3 1/2"	2 1/4"	1/4"	Steel	Plastic	Magnet	000000000	00000
1/8", 3 mm	No. 4, M3, M3.5	1 1/2"	3 1/2"	2 1/4"	5/16"	Steel	Plastic	Magnet	000000000	00000
5/32", 4 mm	No. 6, M4	2 1/2"	3 1/2"	2 1/4"	7/16"	Steel	Plastic	Magnet	000000000	00000
3/16", 4.5 mm	No. 8	2 1/2"	3 1/2"	2 1/4"	1/2"	Steel	Plastic	Magnet	000000000	00000
7/32", 5 mm	No. 10, M5	2 1/2"	3 1/2"	2 1/4"	1/2"	Steel	Plastic	Magnet	000000000	00000
15/64", 6 mm	No. 12, M6	2 1/2"	3 1/2"	2 1/4"	1/2"	Steel	Plastic	Magnet	000000000	00000
1/4", 7 mm	1/4"	3"	4"	2 3/4"	9/16"	Steel	Plastic	Magnet	000000000	00000
5/16", 8 mm	5/16", M8	3"	4"	2 3/4"	11/16"	Steel	Plastic	Magnet	000000000	00000
3/8", 10 mm	3/8", M10	3"	5"	3 3/4"	7/8"	Steel	Plastic	Magnet	000000000	00000
7/16", 11 mm	7/16"	3"	5"	3 3/4"	15/16"	Steel	Plastic	Magnet	000000000	00000
1/2", 12 mm, 13 mm	1/2", M12	3"	5"	3 3/4"	1"	Steel	Plastic	Magnet	000000000	00000

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About Nuts, Materials, and Finishes

Push-On External Retaining Rings

Side-Mount External Retaining Rings

Push-On Internal Retaining Rings

Internal Teeth Retaining Rings

Round Push Nuts

Installation Tools for Press-Fit Nuts

Side-Mount External Retaining Ring Assortments

Push Nut Installation Tools