DIN 981 Bearing Nuts | McMaster-Carr

Filter by

System of Measurement

Thread Size

Face Style

Thread Pitch

Nut Type

Width

Thread Type

Material

Spanner Wrench Style

Thread Spacing

Specifications Met

For Lock Washer Specifications Met

DIN 5406

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

DFARS Specialty Metals

Exempt

REACH

Compliant

RoHS

Compliant

Export Control Classification Number (ECCN)

EAR99

Forward

How can we improve?

92 Products

Bearing Nuts

Carbon Steel

Chamfered Face

Often paired with spring lock washers to strengthen their hold, these bearing nuts—also known as shaft nuts—keep vibration from shifting bearings, bushings, pulleys, and gears on your threaded shaft or spindle. They have slotted sides, so you can tighten and loosen them with a spanner wrench or spanner socket.

Carbon Steel—Carbon steel bearing nuts are strong and resist wear.

Chamfered Face—Chamfered-face bearing nuts weigh less and produce less heat than stepped-face nuts.

ISO 2982— Some chamfered-face bearing nuts meet ISO 2982 (formerly DIN 981), an international standard for bearing locknut dimensions. Their sizes correspond to SKF KM series. Use them with DIN 5406 spring lock washers.

Thread Spacing—When choosing your thread spacing, consider the precision of your application. The finer the threads, the more control you have when making adjustments.

	Nuts								Bearing Lock Washers		Sockets
	Thread
	Size	Spacing	OD, mm	Wd., mm	Specs. Met	For Lock Washer Specs. Met		Each		Each		Each
Carbon Steel







				Chamfered Face

				M10 × 0.75 mm	Extra Fine	18	4	DIN 981, ISO 2982	DIN 5406	3554N11	00000	90391A111	00000	5510N175	0000000


				M12 × 1 mm	Extra Fine	22	4	DIN 981, ISO 2982	DIN 5406	3554N12	0000	90391A112	0000	5510N176	000000
				M15 × 1 mm	Extra Fine	25	5	DIN 981, ISO 2982	DIN 5406	3554N13	0000	90391A113	0000	5510N177	000000
				M17 × 1 mm	Extra Fine	28	5	DIN 981, ISO 2982	DIN 5406	3554N14	0000	90391A114	0000	5510N178	000000
				M20 × 1 mm	Extra Fine	32	6	DIN 981, ISO 2982	DIN 5406	3554N15	0000	90391A115	0000	5510N179	000000
				M25 × 1.5 mm	Extra Fine	38	7	DIN 981, ISO 2982	DIN 5406	3554N16	0000	90391A116	0000	5510N181	000000
				M30 × 1.5 mm	Extra Fine	45	7	DIN 981, ISO 2982	DIN 5406	3554N17	0000	90391A117	0000	5510N182	000000
				M35 × 1.5 mm	Extra Fine	52	8	DIN 981, ISO 2982	DIN 5406	3554N18	0000	90391A118	0000	5510N183	000000
				M40 × 1.5 mm	Extra Fine	58	9	DIN 981, ISO 2982	DIN 5406	3554N19	0000	90391A119	0000	5510N184	000000
				M45 × 1.5 mm	Extra Fine	65	10	DIN 981, ISO 2982	DIN 5406	3554N21	0000	90391A121	0000	———	0
				M50 × 1.5 mm	Extra Fine	70	11	DIN 981, ISO 2982	DIN 5406	3554N22	00000	90391A122	0000	5510N186	000000


				M55 × 2 mm	Extra Fine	75	11	DIN 981, ISO 2982	DIN 5406	3554N23	00000	90391A123	0000	———	0
				M60 × 2 mm	Extra Fine	80	11	DIN 981, ISO 2982	DIN 5406	3554N24	00000	90391A124	0000	5510N188	000000
				M65 × 2 mm	Extra Fine	85	12	DIN 981, ISO 2982	DIN 5406	3554N25	00000	90391A125	0000	5510N189	00000000
				M70 × 2 mm	Extra Fine	92	12	DIN 981, ISO 2982	DIN 5406	3554N26	00000	90391A126	0000	5510N191	00000000
				M75 × 2 mm	Extra Fine	98	13	DIN 981, ISO 2982	DIN 5406	3554N27	00000	90391A127	0000	———	0
				M80 × 2 mm	Extra Fine	105	15	DIN 981, ISO 2982	DIN 5406	3554N28	00000	90391A128	0000	5510N193	00000000
				M85 × 2 mm	Extra Fine	110	16	DIN 981, ISO 2982	DIN 5406	3554N29	00000	90391A129	00000	5510N194	00000000
				M90 × 2 mm	Extra Fine	120	16	DIN 981, ISO 2982	DIN 5406	3554N31	00000	90391A131	00000	———	0
				M95 × 2 mm	Extra Fine	125	17	DIN 981, ISO 2982	DIN 5406	3554N32	00000	90391A132	00000	———	0
				M100 × 2 mm	Extra Fine	130	18	DIN 981, ISO 2982	DIN 5406	3554N33	00000	90391A133	0000	———	0


				M105 × 2 mm	Extra Fine	140	18	DIN 981, ISO 2982	DIN 5406	3554N34	00000	90391A134	0000	———	0
				M110 × 2 mm	Extra Fine	145	19	DIN 981, ISO 2982	DIN 5406	3554N35	00000	90391A135	00000	———	0
				M115 × 2 mm	Extra Fine	150	19	DIN 981, ISO 2982	DIN 5406	3554N36	00000	90391A136	00000	———	0
				M120 × 2 mm	Extra Fine	155	20	DIN 981, ISO 2982	DIN 5406	3554N37	000000	90391A137	00000	———	0
				M125 × 2 mm	Extra Fine	160	21	DIN 981, ISO 2982	DIN 5406	3554N38	00000	90391A138	00000	———	0
				M130 × 2 mm	Extra Fine	165	21	DIN 981, ISO 2982	DIN 5406	3554N39	00000	90391A139	00000	———	0
				M135 × 2 mm	Extra Fine	175	22	DIN 981, ISO 2982	DIN 5406	3554N41	00000	90391A141	00000	———	0
				M140 × 2 mm	Extra Fine	180	22	DIN 981, ISO 2982	DIN 5406	3554N42	000000	90391A142	00000	———	0
				M145 × 2 mm	Extra Fine	190	24	DIN 981, ISO 2982	DIN 5406	3554N43	000000	90391A143	00000	———	0
				M150 × 2 mm	Extra Fine	195	24	DIN 981, ISO 2982	DIN 5406	3554N44	000000	90391A144	00000	———	0


				M155 × 3 mm	Extra Fine	200	25	DIN 981, ISO 2982	DIN 5406	3554N45	000000	———	0	———	0
				M160 × 3 mm	Extra Fine	210	25	DIN 981, ISO 2982	DIN 5406	3554N46	000000	90391A145	000000	———	0
				M165 × 3 mm	Extra Fine	210	26	DIN 981, ISO 2982	DIN 5406	3554N47	000000	———	0	———	0
				M170 × 3 mm	Extra Fine	220	26	DIN 981, ISO 2982	DIN 5406	3554N48	000000	90391A146	000000	———	0
				M180 × 3 mm	Extra Fine	230	27	DIN 981, ISO 2982	DIN 5406	3554N49	000000	90391A147	000000	———	0
				M190 × 3 mm	Extra Fine	240	28	DIN 981, ISO 2982	DIN 5406	3554N51	000000	———	0	———	0
				M200 × 3 mm	Extra Fine	250	29	DIN 981, ISO 2982	DIN 5406	3554N52	000000	———	0	———	0
				M220 × 4 mm	Extra Fine	280	32	DIN 981, ISO 2982	DIN 5406	3554N53	000000	90391A148	000000	———	0
				M240 × 4 mm	Extra Fine	300	34	DIN 981, ISO 2982	DIN 5406	3554N54	000000	———	0	———	0
				M260 × 4 mm	Extra Fine	330	36	DIN 981, ISO 2982	DIN 5406	3554N55	000000	———	0	———	0


				M280 × 4 mm	Extra Fine	350	38	DIN 981, ISO 2982	DIN 5406	3554N56	000000	———	0	———	0