About Nuts, Materials, and Finishes
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About Selecting Shock Absorbers
To select the best shock absorber for your application, you need to find the energy capacity your application requires. Use this formula to calculate the energy capacity required to stop a horizontal-moving load. For example, if you have a 250-lb. load moving at 25 inches per second, your calculation is (250 lbs. ÷ 772) × 252 = 202.4 in.-lbs. energy capacity.
Note: Choose a shock absorber with a higher energy capacity than you calculated. Factors such as driving force or an inclined surface will increase the energy capacity required.
Energy Capacity (in.-lbs.) = (Weight, lbs./772) × Velocity2 (in. per second)
Metric Medium-Strength Steel Thin Hex Nuts
Half as thick as regular hex nuts, these metric nuts fit into spaces with low height clearances. They’re a good choice for fastening most machinery and equipment. Also known as jam nuts, they can be threaded together to form a locknut that won’t move or loosen due to vibration. When fastening threaded rod, you can use two nuts to create a point for tightening the rod with a wrench. These nuts have less tensile strength than a standard hex nut when used alone. Made of steel, they’re best for dry environments, since moisture and chemicals will cause them to rust.
Zinc- and zinc yellow-chromate plated steel nuts resist corrosion in wet environments.
DIN 936 nuts are sometimes taller and wider than ISO 4035 nuts. Although it’s no longer active, DIN 936 is still a commonly referenced standard for material and dimensional compatibility.
ISO 4035 (formerly DIN 439B) nuts are chamfered, so their edges are less sharp than DIN 936 nuts. This new ISO standard is functionally the same as the DIN standard it replaced, with slightly different tolerances for width.
For technical drawings and 3-D models, click on a part number.
Metric Fine-Thread Medium-Strength Steel Thin Hex Nuts
These nuts are half the height of standard hex nuts, and have closely spaced threads to prevent loosening from vibration. They are not compatible with coarse threads. Use them to fasten most machinery and equipment.
Also known as jam nuts, they can be used in place of standard nuts when height clearances are tight, or threaded together to form a locknut. When fastening threaded rod, you can use two nuts to create a point for tightening the rod into place with a wrench. These nuts have less tensile strength than a standard hex nut when used alone.
All meet ISO or DIN standards for dimensions and material composition to ensure compatibility with other products and tools. DIN 936 and DIN 439B standards are no longer active, but they are commonly referenced globally.
Steel nuts without a plating are best for dry environments, since exposure to moisture and chemicals will cause them to rust.
Zinc- and zinc yellow-chromate plated steel nuts resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
Metric 18-8 Stainless Steel Thin Hex Nuts
Useful in low-clearance applications, these metric nuts are roughly half the height of standard hex nuts, but aren’t as strong. Commonly used as locknuts, threading a thin nut against any other hex nut prevents loosening caused by vibration. You can also use them as jam nuts by threading two of these thin nuts against each other on a threaded rod to create a gripping point for turning the rod without damaging its threads. All are 18-8 stainless steel, which is nearly as strong as steel but won’t rust in outdoor, washdown, and other corrosive environments.
DIN 936 nuts are sometimes taller and wider than ISO 4035 nuts. Although it’s no longer active, DIN 936 is still a commonly referenced standard for material and dimensional compatibility.
ISO 4035 nuts are functionally the same as DIN 439B nuts (sometimes called DIN 439-2), but have slightly different width tolerances. These nuts have chamfered edges that make them less sharp than DIN 936 nuts.
For technical drawings and 3-D models, click on a part number.
Metric Fine-Thread 18-8 Stainless Steel Thin Hex Nuts
Made with fine-pitch threads, vibration is less likely to loosen these metric nuts than those with coarse-pitch threads since the threads sit closer together. Fine and coarse threads are not compatible. Also called jam nuts, they are roughly half the height of standard hex nuts, so they’re good for applications with low clearance. However, they have less tensile strength than standard height nuts. Often used as locknuts, thread two against each other to further prevent loosening caused by vibration. You can also do this on a threaded rod, which creates a gripping point so you can turn it without damaging the threads. All are 18-8 stainless steel, which is almost as strong as steel but also won’t rust in outdoor, washdown, and other corrosive environments.
DIN 936 nuts are sometimes slightly taller and wider than DIN 439B nuts. Although it’s no longer active, DIN 936 remains a commonly referenced standard for material and dimensional compatibility.
ISO 4035 nuts are functionally the same as DIN 439B nuts (sometimes also referred to as DIN 439-2), but have slightly different width tolerances. This ISO spec replaces the DIN spec, however DIN 439B is still a common reference point. These nuts have chamfered edges, so they’re less sharp than DIN 936 nuts.
For technical drawings and 3-D models, click on a part number.
Metric Super-Corrosion-Resistant 316 Stainless Steel Thin Hex Nuts
These metric nuts are made of 316 stainless steel and half as tall as regular hex nuts—use them around chemicals and salt water when space is limited. Also known as jam nuts, they can be tightened in pairs to prevent loosening from vibration. Jamming two of these nuts together can also create a gripping point on a threaded rod, letting you use a wrench to turn the rod without damaging the threads.
Nuts with fine and extra-fine threads are less likely to loosen from vibration than those with coarse threads. Fine and extra-fine threads aren’t compatible with coarse threads.
ISO 4035 (formerly DIN 439B) nuts are chamfered, so their edges are less sharp than DIN 936 nuts. This new ISO standard is functionally the same as the DIN standard it replaced, with slightly different tolerances for width.
For technical drawings and 3-D models, click on a part number.
Mounting Nuts for Shock Absorbers
Use Mounting Blocks for Shock Absorbers (not included) to mount and secure threaded-body shock absorbers.
Steel | |||
---|---|---|---|
Thread Size | Thread Pitch, mm | Each | |
Hex Nut | |||
M36 | 1.5 | 0000000 | 000000 |