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Extreme-Temperature Belleville Disc Springs
![](/prerenderstable/mvPRE/contents/gfx/imagecache/971/97125k51p1-d03d-digitall@halfx_636987820250687405.png?ver=imagenotfound)
These springs withstand temperatures from -400° to 1100° F. All are 718 nickel, a high-strength, corrosion-resistant alloy that's also known as Inconel. Use them on shafts, bolts, and the ends of valves to maintain tension and separate components. Unlike Belleville washers, they return to their original height once the load is removed.
Deflection is the distance a spring compresses under load. Flat load is the load at which the spring is completely compressed.
Springs may be stacked to increase working load and deflection. In a nested stack, working load is multiplied by the number of springs used, while deflection remains unchanged. In an inverted stack, deflection is multiplied by the number of springs used, while the working load remains unchanged. In a nested and inverted stack, both load and deflection are increased.
For technical drawings and 3-D models, click on a part number.
For Shaft Dia. | ID | OD | Thick. | Ht. | Compressed Ht. @ Working Load | Deflection @ Working Load | Working Load, lbs. | Flat Load, lbs. | Material | Temperature Range, °F | Each | |
0.138" | 0.142" | 0.281" | 0.021" | 0.033" | 0.03" | 0.004" | 95 | 135 | 718 Nickel | -400° to 1100° | 000000000 | 00000 |
0.138" | 0.142" | 0.344" | 0.025" | 0.038" | 0.033" | 0.005" | 147 | 210 | 718 Nickel | -400° to 1100° | 000000000 | 00000 |
0.164" | 0.168" | 0.344" | 0.025" | 0.045" | 0.04" | 0.005" | 144 | 205 | 718 Nickel | -400° to 1100° | 000000000 | 0000 |
0.164" | 0.168" | 0.406" | 0.03" | 0.045" | 0.039" | 0.006" | 203 | 290 | 718 Nickel | -400° to 1100° | 000000000 | 0000 |
0.164" | 0.168" | 0.406" | 0.035" | 0.042" | 0.036" | 0.006" | 312 | 445 | 718 Nickel | -400° to 1100° | 000000000 | 0000 |
3/16" | 0.196" | 0.406" | 0.03" | 0.046" | 0.04" | 0.006" | 200 | 285 | 718 Nickel | -400° to 1100° | 000000000 | 0000 |
3/16" | 0.196" | 0.469" | 0.04" | 0.056" | 0.05" | 0.006" | 403 | 575 | 718 Nickel | -400° to 1100° | 000000000 | 00000 |
1/4" | 0.255" | 0.5" | 0.04" | 0.049" | 0.043" | 0.006" | 382 | 545 | 718 Nickel | -400° to 1100° | 000000000 | 0000 |
1/4" | 0.255" | 0.75" | 0.041" | 0.062" | 0.047" | 0.015" | 343 | 490 | 718 Nickel | -400° to 1100° | 000000000 | 0000 |
1/4" | 0.258" | 0.688" | 0.05" | 0.091" | 0.08" | 0.011" | 592 | 845 | 718 Nickel | -400° to 1100° | 000000000 | 0000 |
5/16" | 0.317" | 0.63" | 0.032" | 0.06" | 0.05" | 0.011" | 196 | 280 | 718 Nickel | -400° to 1100° | 00000000 | 0000 |
5/16" | 0.317" | 0.63" | 0.04" | 0.054" | 0.045" | 0.009" | 343 | 490 | 718 Nickel | -400° to 1100° | 000000000 | 0000 |
5/16" | 0.322" | 0.688" | 0.05" | 0.063" | 0.053" | 0.01" | 574 | 820 | 718 Nickel | -400° to 1100° | 00000000 | 0000 |
3/8" | 0.38" | 0.755" | 0.04" | 0.059" | 0.046" | 0.013" | 312 | 445 | 718 Nickel | -400° to 1100° | 00000000 | 0000 |
3/8" | 0.38" | 0.755" | 0.062" | 0.074" | 0.065" | 0.009" | 910 | 1,300 | 718 Nickel | -400° to 1100° | 000000000 | 0000 |
7/16" | 0.442" | 0.88" | 0.045" | 0.067" | 0.052" | 0.015" | 389 | 555 | 718 Nickel | -400° to 1100° | 000000000 | 0000 |
1/2" | 0.505" | 1.005" | 0.05" | 0.075" | 0.058" | 0.018" | 473 | 675 | 718 Nickel | -400° to 1100° | 00000000 | 0000 |
1/2" | 0.515" | 1.063" | 0.079" | 0.094" | 0.08" | 0.014" | 1,418 | 2,025 | 718 Nickel | -400° to 1100° | 000000000 | 00000 |
1/2" | 0.515" | 1.5" | 0.125" | 0.155" | 0.133" | 0.022" | 4,074 | 5,820 | 718 Nickel | -400° to 1100° | 000000000 | 00000 |
9/16" | 0.562" | 1.13" | 0.04" | 0.063" | 0.039" | 0.025" | 249 | 355 | 718 Nickel | -400° to 1100° | 000000000 | 0000 |
5/8" | 0.625" | 1.255" | 0.04" | 0.074" | 0.045" | 0.029" | 235 | 335 | 718 Nickel | -400° to 1100° | 00000000 | 0000 |
5/8" | 0.625" | 1.255" | 0.05" | 0.086" | 0.061" | 0.025" | 417 | 595 | 718 Nickel | -400° to 1100° | 00000000 | 0000 |
5/8" | 0.637" | 1.25" | 0.061" | 0.094" | 0.072" | 0.022" | 683 | 975 | 718 Nickel | -400° to 1100° | 000000000 | 00000 |
5/8" | 0.644" | 1.313" | 0.1" | 0.122" | 0.105" | 0.017" | 2,335 | 3,335 | 718 Nickel | -400° to 1100° | 000000000 | 00000 |
3/4" | 0.773" | 1.5" | 0.125" | 0.149" | 0.132" | 0.017" | 3,787 | 5,410 | 718 Nickel | -400° to 1100° | 00000000 | 00000 |
3/4" | 0.773" | 2" | 0.156" | 0.198" | 0.168" | 0.03" | 5,950 | 8,500 | 718 Nickel | -400° to 1100° | 000000000 | 00000 |
7/8" | 0.901" | 1.75" | 0.125" | 0.155" | 0.133" | 0.022" | 3,528 | 5,040 | 718 Nickel | -400° to 1100° | 000000000 | 00000 |
7/8" | 0.995" | 2.005" | 0.084" | 0.136" | 0.096" | 0.04" | 1,211 | 1,730 | 718 Nickel | -400° to 1100° | 00000000 | 00000 |
Split Lock Washers
![](/prerenderstable/mvPRE/contents/gfx/imagecache/921/92147a0291566225030-p9@halfx_637018050856940362.png?ver=imagenotfound)
As a screw is tightened, these washers flatten to add tension to the joint, counteracting fatigue around the joint from small amounts of vibration. This makes them a common choice to prevent fasteners from loosening. However, they resist the least amount of vibration compared to other locking washers.
These washers are compatible with fasteners that have right-hand threads to prevent loosening. The uneven split ends bite into fasteners for a tight grip, but they won’t work with hardened surfaces. These washers hold better than curved or wave washers. They are not reusable after tightening.
K500 nickel washers (also known as Monel) have excellent resistance to salt water and some acids. They may be mildly magnetic.
Washers that meet ASME B18.21.1 adhere to strict dimensional standards.
For technical drawings and 3-D models, click on a part number.
For Screw Size | ID | OD | Thick. | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
K500 Nickel | ||||||||
---|---|---|---|---|---|---|---|---|
1/4" | 0.260" | 0.487" | 0.062"-0.077" | Not Rated | ASME B18.21.1 | 10 | 000000000 | 000000 |
5/16" | 0.322" | 0.583" | 0.078"-0.097" | Not Rated | ASME B18.21.1 | 5 | 000000000 | 00000 |
3/8" | 0.385" | 0.680" | 0.094"-0.115" | Not Rated | ASME B18.21.1 | 5 | 000000000 | 00000 |
1/2" | 0.512" | 0.869" | 0.125"-0.151" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 0000 |
5/8" | 0.641" | 1.073" | 0.156"-0.189" | Not Rated | ASME B18.21.1 | 1 | 000000000 | 00000 |