Bearing Lock Nut / Km Nut / DIN981 /Round Nut

• Customization: Available
• Material: Carbon Steel, Stainless Steel, Alloy Steel
• Type: Hexagon Head
• Model NO.: Bearing Nut
• Connection: Common Bolt
• Head Style: Hexagonal
• Standard: DIN, ANSI, GB, JIS, BSW
• Grade: 4,6,8,10,12
• Delivery: 5-10 Days in Stock, 10-30 Days Not in Stock
• Head Mark: Customized
• Thread Length: Lnternal Threads
• Size: M3-M100
• Transport Package: Plastic Bags+Cartons+Pallets
• Specification: as Request
• Trademark: LS or Customized
• Origin: Hebei, China
• HS Code: 731816
• Production Capacity: 50 Million Tons/Month
• Package Size: 23.00cm * 11.00cm * 6.00cm
• Package Gross Weight: 25.000kg

Product Description

PRODUCT PARAMETER

Bearing Nuts

Bearing nuts (or shaft nuts) are precision fasteners designed to secure bearing inner/outer rings to shafts or housings, preventing axial movement and maintaining bearing alignment under rotational loads. Typically made of high-carbon steel (1045) or alloy steel (40Cr), they often have surface treatments like phosphating or zinc plating for corrosion resistance, complying with standards such as DIN 980V (slotted) or ISO 8665 (hexagon thin).

Key Applications:

Mechanical Rotation Systems: Lock bearings on motor shafts, pump spindles, and gearbox shafts to ensure stable rotation.
Automotive Drivetrains: Secure wheel hub bearings and transmission bearings, withstanding vibration and axial forces during driving.
Machine Tools: Fix spindle bearings in lathes or milling machines, critical for maintaining machining precision.
Agricultural/Heavy Equipment: Fasten bearings in tractor axles or conveyor rollers, enduring harsh working conditions.

nominal size			2.204	2.407	2.626	4.778	5.185	5.622	6.097
d
code			RN 10	RN 11	RN 12	ANR 22	ANR 24	ANR 26	RN 28
k1			18	18	18	12	12	12	8
C	Maximum value (inches)		3.062	3.281	3.5	6.312	3.938	7.312	7.938
E	Maximum value (inches)		2.562	2.812	3.062	5.375	5.625	6.062	6.563
D	Maximum value (inches)		0.594	0.594	0.656	0.781	0.844	0.906	0.969
G	Minimum value (inches)		0.24	0.24	0.24	0.61	0.61	0.61	0.61
H	Maximum value (inches)		0.135	0.135	0.135	0.26	0.291	0.291	0.291
D1	Maximum value (inches)		0.078	0.078	0.078	0.141	0.141	0.141	0.141
C	Maximum value (mm)		77.77	83.34	88.9	160.32	176.23	185.72	201.63
E	Maximum value (mm)		65.07	71.42	77.77	136.53	142.88	153.97	166.7
D	Maximum value (mm)		15.09	15.09	16.66	19.84	21.44	23.01	24.61
G	Maximum value (mm)		6.1	6.1	6.1	15.49	15.49	15.49	15.49
H	Maximum value (mm)		3.43	3.43	3.43	6.6	7.39	7.39	7.39
D1	Minimum value (mm)		1.98	1.98	1.98	3.58	3.58	3.58	3.58

ABOUT US

LONGSHI FASTENERS MANUFACTURING CO.,LTD.,

Longshi Fastener Manufacturing Co., Ltd., founded in 2008, is located in Shahe City, Hebei Province, close to the country's largestLarge fastener industrial cluster - Yongnian standard parts Industrial Park. The company headquarters covers an area of 21 thousand square meters, the annual output value of 200 million yuan, with more than 200 employees, with domestic More than 100 sets of advanced production equipment. It is a "manufacturing + service" type enterprise integrating fastener production, intelligent warehousing and e-commerce sales. The company's construction of the sea screw e-commerce park is located in Yongnian District, Handan City, Hebei Province, covers an area of 45 acres, the park planning and construction of office area, production area, packaging area, storage area, etc., to provide fastener production, packaging, warehousing, e-commerce sales and other services. Longshi mainly produces high quality and high strength fasteners, and "Longshi" screws have become a well-known brand in the industry. Longshi always adhere to quality first, reputation first. From raw material procurement, design and development, production and processing to products strict quality control is implemented in every link of quality testing and sales to win the recognition of our customers. The company has established standardized product testing laboratories and quality testing processes and standards to ensure that products strictly comply with national standards.

FAQ

Q1: What is your minimum order quantity (MOQ)? Do you charge extra for small orders?
100 pieces MOQ (most peers require 1,000+), no price premium for small orders. First-time customers for cross-border e-commerce/trade get free samples.
Q2:Do you support custom orders? How long does the customization process take?
Longshi Advantage: 8-dimensional customization (material, specification, surface treatment, etc.), with 3D design drawings + process plans.
Q3: What if an item is out of stock?
Stockout rate <0.1% (peers: 10+%), with real-time inventory monitoring. For extreme stockouts, free upgraded alternatives are provided (peers often leave clients waiting indefinitely).
Q4: Do you provide technical support, such as installation guidance or drawing optimization?
Dedicated 1v1 engineer team offering free technical support.
Q5:Can I visit your factory or arrange a factory audit?
Support online factory tours (real-time video of production lines/laboratories) and offline visits (pick-up service available).