Clear All

	System of Measurement System of Measurement

	For ID For ID

20mm

	Retaining Ring Type Retaining Ring Type

	Internal

	Ring OD Ring OD

	Ring Thickness Ring Thickness

	Retaining Ring Style Retaining Ring Style

	Standard

	For Groove Diameter For Groove Diameter

	Material Material

Steel

	For Groove Width For Groove Width

	Specifications Met Specifications Met

DIN

	Thrust Load Capacity Thrust Load Capacity

Less than 10,000 lbs.

10,000 to 19,999 lbs.

20,000 to 99,999 lbs.

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

DFARS Specialty Metals
COTS-Exempt

	Magnetic Properties Magnetic Properties

Magnetic

	Minimum Hardness Minimum Hardness

Rockwell C47

	Finish Finish

17 Products

Heavy-Duty Internal Retaining Rings

Thicker and stronger than standard internal retaining rings, these withstand greater thrust loads. They are made from spring steel, so squeeze them with retaining ring pliers to install and remove them. Their black-phosphate finish won’t corrode in dry environments. All meet DIN 472, an international standard for retaining ring specifications.

Ring OD is measured with the ring uninstalled. 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.

	For Groove		Ring
For ID, mm	Dia., mm	Wd., mm	OD, mm	Thick., mm	Min. Hardness	Thrust Load Cap., lbs.	Magnetic Properties	Specifications Met	Pkg. Qty.		Pkg.
Metric
Black Phosphate 1060-1090 Spring Steel
20	21	1.6	21.5	1.5	Rockwell C47	3,640	Magnetic	DIN 472	25	000000000	00000
22	23	1.6	23.5	1.5	Rockwell C47	4,040	Magnetic	DIN 472	25	000000000	0000
28	29.4	1.6	30.1	1.5	Rockwell C47	4,670	Magnetic	DIN 472	25	000000000	0000
30	31.4	1.6	32.1	1.5	Rockwell C47	4,810	Magnetic	DIN 472	25	000000000	00000
32	33.7	1.6	34.4	1.5	Rockwell C47	4,810	Magnetic	DIN 472	25	000000000	0000
35	37	1.85	37.8	1.75	Rockwell C47	8,220	Magnetic	DIN 472	25	000000000	0000
38	40	1.85	40.8	1.75	Rockwell C47	8,610	Magnetic	DIN 472	10	000000000	00000
40	42.5	2.15	43.5	2	Rockwell C47	13,100	Magnetic	DIN 472	10	000000000	00000
45	47.5	2.15	48.5	2	Rockwell C47	12,700	Magnetic	DIN 472	5	000000000	00000
52	55	2.65	56.2	2.5	Rockwell C47	21,200	Magnetic	DIN 472	5	000000000	00000
55	58	2.65	59.2	2.5	Rockwell C47	21,200	Magnetic	DIN 472	5	000000000	00000
60	63	3.15	64.2	3	Rockwell C47	30,700	Magnetic	DIN 472	5	000000000	00000
62	65	3.15	66.2	3	Rockwell C47	30,700	Magnetic	DIN 472	5	000000000	00000
63	66	3.15	67.2	3	Rockwell C47	30,700	Magnetic	DIN 472	5	000000000	00000
64	67	3.15	68.2	3	Rockwell C47	30,700	Magnetic	DIN 472	5	000000000	00000
65	68	3.15	69.2	3	Rockwell C47	39,100	Magnetic	DIN 472	5	000000000	00000
70	73	3.15	74.5	3	Rockwell C47	38,400	Magnetic	DIN 472	5	000000000	00000