DIN 981 Bearing Nuts | McMaster-Carr

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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	0000000	00000	000000000	00000	00000000	0000000
				M12 × 1 mm	Extra Fine	22	4	DIN 981, ISO 2982	DIN 5406	0000000	0000	000000000	0000	00000000	000000
				M15 × 1 mm	Extra Fine	25	5	DIN 981, ISO 2982	DIN 5406	0000000	0000	000000000	0000	00000000	000000
				M17 × 1 mm	Extra Fine	28	5	DIN 981, ISO 2982	DIN 5406	0000000	0000	000000000	0000	00000000	000000
				M20 × 1 mm	Extra Fine	32	6	DIN 981, ISO 2982	DIN 5406	0000000	0000	000000000	0000	00000000	000000
				M25 × 1.5 mm	Extra Fine	38	7	DIN 981, ISO 2982	DIN 5406	0000000	0000	000000000	0000	00000000	000000
				M30 × 1.5 mm	Extra Fine	45	7	DIN 981, ISO 2982	DIN 5406	0000000	0000	000000000	0000	00000000	000000
				M35 × 1.5 mm	Extra Fine	52	8	DIN 981, ISO 2982	DIN 5406	0000000	0000	000000000	0000	00000000	000000
				M40 × 1.5 mm	Extra Fine	58	9	DIN 981, ISO 2982	DIN 5406	0000000	0000	000000000	0000	00000000	000000
				M45 × 1.5 mm	Extra Fine	65	10	DIN 981, ISO 2982	DIN 5406	0000000	00000	000000000	0000	———	0
				M50 × 1.5 mm	Extra Fine	70	11	DIN 981, ISO 2982	DIN 5406	0000000	00000	000000000	0000	00000000	000000
				M55 × 2 mm	Extra Fine	75	11	DIN 981, ISO 2982	DIN 5406	0000000	00000	000000000	0000	———	0
				M60 × 2 mm	Extra Fine	80	11	DIN 981, ISO 2982	DIN 5406	0000000	00000	000000000	0000	00000000	000000
				M65 × 2 mm	Extra Fine	85	12	DIN 981, ISO 2982	DIN 5406	0000000	00000	000000000	0000	00000000	000000
				M70 × 2 mm	Extra Fine	92	12	DIN 981, ISO 2982	DIN 5406	0000000	00000	000000000	0000	00000000	00000000
				M75 × 2 mm	Extra Fine	98	13	DIN 981, ISO 2982	DIN 5406	0000000	00000	000000000	0000	———	0
				M80 × 2 mm	Extra Fine	105	15	DIN 981, ISO 2982	DIN 5406	0000000	00000	000000000	0000	00000000	00000000
				M85 × 2 mm	Extra Fine	110	16	DIN 981, ISO 2982	DIN 5406	0000000	00000	000000000	0000	00000000	00000000
				M90 × 2 mm	Extra Fine	120	16	DIN 981, ISO 2982	DIN 5406	0000000	00000	000000000	00000	———	0
				M95 × 2 mm	Extra Fine	125	17	DIN 981, ISO 2982	DIN 5406	0000000	00000	000000000	00000	———	0
				M100 × 2 mm	Extra Fine	130	18	DIN 981, ISO 2982	DIN 5406	0000000	00000	000000000	0000	———	0
				M105 × 2 mm	Extra Fine	140	18	DIN 981, ISO 2982	DIN 5406	0000000	00000	000000000	0000	———	0
				M110 × 2 mm	Extra Fine	145	19	DIN 981, ISO 2982	DIN 5406	0000000	00000	000000000	00000	———	0
				M115 × 2 mm	Extra Fine	150	19	DIN 981, ISO 2982	DIN 5406	0000000	00000	000000000	00000	———	0
				M120 × 2 mm	Extra Fine	155	20	DIN 981, ISO 2982	DIN 5406	0000000	00000	000000000	00000	———	0
				M125 × 2 mm	Extra Fine	160	21	DIN 981, ISO 2982	DIN 5406	0000000	00000	000000000	00000	———	0
				M130 × 2 mm	Extra Fine	165	21	DIN 981, ISO 2982	DIN 5406	0000000	00000	000000000	00000	———	0
				M135 × 2 mm	Extra Fine	175	22	DIN 981, ISO 2982	DIN 5406	0000000	000000	000000000	00000	———	0
				M140 × 2 mm	Extra Fine	180	22	DIN 981, ISO 2982	DIN 5406	0000000	000000	000000000	00000	———	0
				M145 × 2 mm	Extra Fine	190	24	DIN 981, ISO 2982	DIN 5406	0000000	000000	000000000	00000	———	0
				M150 × 2 mm	Extra Fine	195	24	DIN 981, ISO 2982	DIN 5406	0000000	000000	000000000	00000	———	0
				M155 × 3 mm	Extra Fine	200	25	DIN 981, ISO 2982	DIN 5406	0000000	000000	———	0	———	0
				M160 × 3 mm	Extra Fine	210	25	DIN 981, ISO 2982	DIN 5406	0000000	000000	000000000	000000	———	0
				M165 × 3 mm	Extra Fine	210	26	DIN 981, ISO 2982	DIN 5406	0000000	000000	———	0	———	0
				M170 × 3 mm	Extra Fine	220	26	DIN 981, ISO 2982	DIN 5406	0000000	000000	000000000	000000	———	0
				M180 × 3 mm	Extra Fine	230	27	DIN 981, ISO 2982	DIN 5406	0000000	000000	000000000	000000	———	0
				M190 × 3 mm	Extra Fine	240	28	DIN 981, ISO 2982	DIN 5406	0000000	000000	———	0	———	0
				M200 × 3 mm	Extra Fine	250	29	DIN 981, ISO 2982	DIN 5406	0000000	000000	———	0	———	0
				M220 × 4 mm	Extra Fine	280	32	DIN 981, ISO 2982	DIN 5406	0000000	000000	000000000	000000	———	0
				M240 × 4 mm	Extra Fine	300	34	DIN 981, ISO 2982	DIN 5406	0000000	000000	———	0	———	0
				M260 × 4 mm	Extra Fine	330	36	DIN 981, ISO 2982	DIN 5406	0000000	000000	———	0	———	0
				M280 × 4 mm	Extra Fine	350	38	DIN 981, ISO 2982	DIN 5406	0000000	000000	———	0	———	0