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Mil. Spec. Tooth Lock Washers
External Tooth
 |
Teeth on the outside edge bite into both the fastener and the mating surface for a stronger hold than internal-tooth lock washers. However, they may mar your material and snag on objects. Pair these washers with nuts and screws that are large enough to make contact with the teeth, such as pan, button, and binding head screws.
Wear-Resistant 410 Stainless Steel—These grip hard material better than other types of stainless steel. They are not as corrosion resistant as 18-8 and 316 stainless steel, so they are best for environments that experience occasional moisture.
For Screw Size | ID | OD | Thk. | Mil. Spec. | Specs. Met | Pkg. Qty. | Pkg. | |||
|---|---|---|---|---|---|---|---|---|---|---|
Wear-Resistant 410 Stainless Steel | ||||||||||
| No. 4 | 0.115" | 0.260" | 0.015" to 0.019" | MS35335-57 | ASME B18.21.1 | 25 | 97775A110 | 000000 | ||
| No. 6 | 0.141" | 0.320" | 0.016" to 0.022" | MS35335-58 | ASME B18.21.1 | 25 | 97775A150 | 00000 | ||
| No. 8 | 0.168" | 0.381" | 0.018" to 0.023" | MS35335-59 | ASME B18.21.1 | 25 | 97775A220 | 00000 | ||
| No. 10 | 0.195" | 0.410" | 0.020" to 0.025" | MS35335-60 | ASME B18.21.1 | 25 | 97775A260 | 00000 | ||
| 1/4" | 0.256" | 0.510" | 0.023" to 0.028" | MS35335-61 | ASME B18.21.1 | 25 | 97775A330 | 00000 | ||
| 5/16" | 0.320" | 0.610" | 0.028" to 0.034" | MS35335-62 | ASME B18.21.1 | 25 | 97775A370 | 00000 | ||
| 3/8" | 0.384" | 0.694" | 0.032" to 0.040" | MS35335-63 | ASME B18.21.1 | 25 | 97775A440 | 00000 | ||
| 7/16" | 0.448" | 0.760" | 0.032" to 0.040" | MS35335-64 | ASME B18.21.1 | 25 | 97775A511 | 00000 | ||
| 1/2" | 0.513" | 0.900" | 0.037" to 0.045" | MS35335-65 | ASME B18.21.1 | 10 | 97775A512 | 0000 | ||
| 9/16" | 0.576" | 0.985" | 0.037" to 0.045" | MS35335-66 | ASME B18.21.1 | 10 | 97775A513 | 0000 | ||
| 5/8" | 0.641" | 1.070" | 0.042" to 0.050" | MS35335-67 | ASME B18.21.1 | 5 | 97775A514 | 0000 | ||
| 3/4" | 0.768" | 1.260" | 0.047" to 0.055" | MS35335-68 | ASME B18.21.1 | 5 | 97775A515 | 0000 | ||
| 7/8" | 0.897" | 1.410" | 0.052" to 0.060" | MS35335-69 | ASME B18.21.1 | 1 | 97775A516 | 0000 | ||
| 1" | 1.025" | 1.620" | 0.059" to 0.067" | MS35335-70 | ASME B18.21.1 | 1 | 97775A517 | 0000 | ||
Internal Tooth
 |
Internal teeth dig into the nut or screw to prevent it from backing out. Unlike external-tooth lock washers, these have a smooth outside edge, so they are less likely to mar your material or snag on objects. However, they don’t grip quite as well. Pair them with fasteners that have small diameters, such as fillister and cheese head screws.
Wear-Resistant 410 Stainless Steel—These grip hard material better than other types of stainless steel. They are not as corrosion resistant as 18-8 and 316 stainless steel, so they are best for environments that experience occasional moisture.
For Screw Size | ID | OD | Thk. | Mil. Spec. | Specs. Met | Pkg. Qty. | Pkg. | |||
|---|---|---|---|---|---|---|---|---|---|---|
Wear-Resistant 410 Stainless Steel | ||||||||||
| No. 2 | 0.089" | 0.200" | 0.010" to 0.015" | MS35333-69, NASM35333 | ASME B18.21.1 | 25 | 96551A110 | 00000 | ||
| No. 4 | 0.115" | 0.270" | 0.015" to 0.019" | MS35333-70, NASM35333 | ASME B18.21.1 | 25 | 96551A550 | 00000 | ||
| No. 6 | 0.141" | 0.295" | 0.017" to 0.021" | MS35333-71, NASM35333 | ASME B18.21.1 | 25 | 96551A610 | 00000 | ||
| No. 8 | 0.168" | 0.340" | 0.018" to 0.023" | MS35333-72, NASM35333 | ASME B18.21.1 | 25 | 96551A670 | 00000 | ||
| No. 10 | 0.195" | 0.381" | 0.020" to 0.025" | MS35333-73, NASM35333 | ASME B18.21.1 | 25 | 96551A770 | 00000 | ||
| 1/4" | 0.256" | 0.478" | 0.023" to 0.028" | MS35333-74, NASM35333 | ASME B18.21.1 | 25 | 96551A790 | 00000 | ||
| 5/16" | 0.332" | 0.610" | 0.028" to 0.034" | MS35333-75, NASM35333 | ASME B18.21.1 | 25 | 96551A120 | 0000 | ||
| 3/8" | 0.384" | 0.692" | 0.032" to 0.040" | MS35333-76, NASM35333 | ASME B18.21.1 | 25 | 96551A130 | 00000 | ||
| 7/16" | 0.448" | 0.789" | 0.032" to 0.040" | MS35333-77, NASM35333 | ASME B18.21.1 | 25 | 96551A140 | 00000 | ||
| 1/2" | 0.512" | 0.900" | 0.037" to 0.045" | MS35333-78, NASM35333 | ASME B18.21.1 | 10 | 96551A150 | 00000 | ||
| 5/8" | 0.640" | 1.071" | 0.042" to 0.050" | MS35333-80, NASM35333 | ASME B18.21.1 | 10 | 96551A160 | 00000 | ||
| 3/4" | 0.769" | 1.245" | 0.047" to 0.055" | MS35333-81, NASM35333 | ASME B18.21.1 | 5 | 96551A170 | 00000 | ||
| 7/8" | 0.894" | 1.410" | 0.052" to 0.060" | MS35333-82, NASM35333 | ASME B18.21.1 | 5 | 96551A180 | 00000 | ||
Thrust Ball Bearings
 |  |
For silky-smooth motion, the balls inside these bearings roll nearly friction-free. You'll often find them at the end of a shaft or between a stationary and rotating surface, such as on a propeller or rotary table.
These bearings come as three separate pieces—one cage and two washers. The cage holds the balls in place, while the washers create a surface for the balls to roll on. This design is easy to lubricate, but the oil will attract dust and grime since it's exposed.
Stainless Steel—These bearings won't degrade from water or mild chemicals, such as the ammonia in cleaning solutions. However, they're not as strong as steel bearings.
For Shaft Dia. | OD | Thk. | Cage Material | Dynamic Thrust Load Cap., lb. | Max. Rotation Speed, rpm | Temp. Range, ° F | Includes | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
Stainless Steel | |||||||||||
| 1/8" | 7/16" | 0.193" | Nylon | 80 | 5,000 | -40 to 220 | Two Washers | 6655K31 | 00000 | ||
| 3/16" | 1/2" | 0.193" | Nylon | 85 | 5,000 | -40 to 220 | Two Washers | 6655K32 | 0000 | ||
| 1/4" | 9/16" | 0.193" | Nylon | 90 | 5,000 | -40 to 220 | Two Washers | 6655K33 | 0000 | ||
| 5/16" | 5/8" | 0.193" | Nylon | 95 | 5,000 | -40 to 220 | Two Washers | 6655K34 | 0000 | ||
| 3/8" | 13/16" | 0.249" | Nylon | 120 | 5,000 | -40 to 220 | Two Washers | 6655K35 | 0000 | ||
| 7/16" | 7/8" | 0.249" | Nylon | 130 | 5,000 | -40 to 220 | Two Washers | 6655K36 | 0000 | ||
| 1/2" | 15/16" | 0.249" | Nylon | 140 | 5,000 | -40 to 220 | Two Washers | 6655K37 | 0000 | ||
| 9/16" | 1" | 0.249" | Nylon | 145 | 5,000 | -40 to 220 | Two Washers | 6655K82 | 0000 | ||
| 5/8" | 1 1/8" | 0.342" | Nylon | 175 | 5,000 | -40 to 220 | Two Washers | 6655K38 | 0000 | ||
| 3/4" | 1 1/4" | 0.342" | Nylon | 205 | 5,000 | -40 to 220 | Two Washers | 6655K39 | 0000 | ||
| 7/8" | 1 3/8" | 0.342" | Nylon | 195 | 5,000 | -40 to 220 | Two Washers | 6655K41 | 00000 | ||
| 1" | 1 5/8" | 0.437" | Nylon | 320 | 5,000 | -40 to 220 | Two Washers | 6655K42 | 00000 | ||
| 1 1/8" | 1 3/4" | 0.437" | Nylon | 350 | 5,000 | -40 to 220 | Two Washers | 6655K43 | 00000 | ||
| 1 1/4" | 1 7/8" | 0.437" | Nylon | 380 | 5,000 | -40 to 220 | Two Washers | 6655K44 | 00000 | ||
| 1 1/2" | 2 1/8" | 0.437" | Nylon | 360 | 5,000 | -40 to 220 | Two Washers | 6655K45 | 00000 | ||
| 4 mm | 9 mm | 4.13 mm | Nylon | 35 | 5,000 | -40 to 220 | Two Washers | 6655K91 | 0000 | ||
| 5 mm | 12 mm | 4.92 mm | Nylon | 85 | 5,000 | -40 to 220 | Two Washers | 6655K71 | 0000 | ||
| 6 mm | 14 mm | 4.92 mm | Nylon | 90 | 5,000 | -40 to 220 | Two Washers | 6655K72 | 0000 | ||
| 7 mm | 17 mm | 4.92 mm | Nylon | 95 | 5,000 | -40 to 220 | Two Washers | 6655K73 | 0000 | ||
| 8 mm | 16 mm | 4.92 mm | Nylon | 95 | 5,000 | -40 to 220 | Two Washers | 6655K74 | 0000 | ||
| 10 mm | 21 mm | 6.35 mm | Nylon | 120 | 5,000 | -40 to 220 | Two Washers | 6655K75 | 0000 | ||
| 12 mm | 24 mm | 6.35 mm | Nylon | 140 | 5,000 | -40 to 220 | Two Washers | 6655K76 | 0000 | ||
| 16 mm | 28 mm | 8.69 mm | Nylon | 175 | 5,000 | -40 to 220 | Two Washers | 6655K77 | 0000 | ||
| 19 mm | 32 mm | 8.69 mm | Nylon | 205 | 5,000 | -40 to 220 | Two Washers | 6655K78 | 00000 | ||
| 25 mm | 41 mm | 11.11 mm | Nylon | 320 | 5,000 | -40 to 220 | Two Washers | 6655K79 | 00000 | ||
| 28 mm | 44 mm | 11.11 mm | Nylon | 350 | 5,000 | -40 to 220 | Two Washers | 6655K81 | 00000 | ||
Tooth Lock Washers
Internal and External Tooth
 |
For Screw Size | ID | OD | Thk. | Specs. Met | Pkg. Qty. | Pkg. | |||
|---|---|---|---|---|---|---|---|---|---|
Wear-Resistant 410 Stainless Steel | |||||||||
| No. 4 | 0.115" | 0.475" | 0.016" to 0.021" | ASME B18.21.1 | 100 | 90588A111 | 00000 | ||
| No. 6 | 0.141" | 0.510" | 0.023" to 0.028" | ASME B18.21.1 | 100 | 90588A112 | 0000 | ||
| No. 8 | 0.168" | 0.610" | 0.028" to 0.034" | ASME B18.21.1 | 100 | 90588A113 | 0000 | ||
| No. 10 | 0.195" | 0.610" | 0.028" to 0.034" | ASME B18.21.1 | 100 | 90588A114 | 0000 | ||
| 1/4" | 0.256" | 0.760" | 0.032" to 0.040" | ASME B18.21.1 | 50 | 90588A115 | 0000 | ||
| 5/16" | 0.320" | 0.900" | 0.032" to 0.040" | ASME B18.21.1 | 50 | 90588A116 | 0000 | ||
| 3/8" | 0.384" | 0.985" | 0.037" to 0.045" | ASME B18.21.1 | 25 | 90588A117 | 0000 | ||
| 1/2" | 0.512" | 1.260" | 0.047" to 0.055" | ASME B18.21.1 | 10 | 90588A118 | 0000 | ||
