A nut is a type of fastener with a threaded hole. Nuts are almost always used in conjunction with a mating bolt to fasten two or more parts together. The two partners are kept together by a combination of their threads' friction, a slight stretching of the bolt, and compression of the parts to be held together. These DIN582 A2-70 SS304 Stainless Steel Lifting Eye Nuts in M24 and M36 sizes are reliable and essential components for safe lifting and hoisting operations, providing durability and strength in various industrial applications.
GRADE | CHEMICAL COMPOSITION1(%MAXIMA UNLESS STATED) | NOTES | ALTERNATIVE NAMES | ||||||||
C | Si | Mn | P | S | Cr | Mo | Ni | Cu | |||
A1 | 0.12 | 1 | 6.5 | 0.2 | 0.15/0.35 | 16-19 | 0.7 | 5-10 | 1.75-2.25 | 2 3 4 | 303S31,303S42,1.4305 |
A2 | 0.1 | 1 | 2 | 0.05 | 0.03 | 15-20 | 5 | 8-19 | 4 | 6 7 | 304,394S17(BS3111),1.4301,1.4567 |
A3 | 0.08 | 1 | 2 | 0.045 | 0.03 | 17-19 | 5 | 9-12 | 1 | 8 | 321,1.4541,347,1.4550 |
A4 | 0.08 | 1 | 2 | 0.045 | 0.03 | 16-18.5 | 2-3 | 10-15 | 4 | 7 9 | 316,1.4401,1.4578 |
A5 | 0.08 | 1 | 2 | 0.045 | 0.03 | 16-18.5 | 2-3 | 10.5-14 | 1 | 8 9 | 316Ti,1.4571,316Cb,1.4580 |
C1 | 0.09-0.15 | 1 | 1 | 0.05 | 0.03 | 11.5-14 | - | 1 | - | 9 | 410,1.4006 |
C3 | 0.17-0.25 | 1 | 1 | 0.04 | 0.03 | 16-18 | - | 1.5-2.5 | - |
|
431,1.4057 |
C4 | 0.08-0.15 | 1 | 1.5 | 0.06 | 0.15-0.35 | 12-14 | 0.8 | 1 |
|
2 9 | 416,1.4005 |
F1 | 0.12 | 1 | 1 | 0.04 | 0.03 | 15-18 | 10 | 1 |
|
11 12 | 430,1.4016,430Ti,1.4520,430Cb,1.4511 |
In scenarios where the risk of nuts working loose due to vibration or rotation is a concern, a range of locking mechanisms can be utilized to ensure secure fastening. These include lock washers, jam nuts, specialized adhesive thread-locking fluids like Loctite, safety pins (split pins), or lockwire paired with castellated nuts. Additionally, solutions like nylon inserts (Nyloc nuts) or slightly oval-shaped threads can effectively prevent unintended loosening.
The hexagonal shape is the most prevalent due to its practicality, offering six sides that allow for easy access and tightening using tools. This shape's design enables optimal grip with just a 1/6th rotation, ensuring secure fastening. However, shapes with more than six sides don't offer the same grip, while those with fewer sides necessitate more rotations for complete fastening. Unique shapes like wingnuts allow for hand adjustment, while captive nuts, such as cage nuts, cater to use in hard-to-reach areas.
Nuts come in various types, ranging from standard household hardware to specialized designs meeting industry-specific standards. In automotive, engineering, and industrial applications, precise torque settings are crucial, often requiring the use of a torque wrench. Nuts are graded according to strength ratings that correspond to their respective bolts. For instance, an ISO property class 10 nut is designed to support the proof strength load of an ISO property class 10.9 bolt without stripping. Similarly, an SAE class 5 nut matches the proof load capacity of an SAE class 5 bolt, ensuring compatibility and reliable fastening in various applications.