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DFARS Compliance
Locking Type
Press-Fit Ball-Nose Spring Plungers
Designed with a flange to keep the plunger from being pushed through a hole when the ball is depressed. These spring plungers have a tapered end and smooth body to make them easy to press into unthreaded holes in soft material such as wood, plastic, and aluminum. Drill a slightly smaller hole for a snug fit.
Steel is strong and wear resistant.
Stainless steel is chemical resistant and may be mildly magnetic.
Plastic is chemical resistant and lightweight; plastic noses are extra soft to minimize marring soft surfaces such as aluminum.
Brass is corrosion resistant in wet environments.
Extended nose force is the force required to begin to depress the nose. Compressed nose force is the force required to depress the nose flush with the body. When using a plunger as a detent or stop, a lighter nose force with a shallower hole releases more easily, while a heavier force with a deeper hole holds more securely.
For technical drawings and 3-D models, click on a part number.
Inch
Body | Nose | Flange | Nose Force, lbs. | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | Lg. | Extended Lg. | Dia. | Temp. Range, °F | Dia. | Thick. | Extended | Compressed | Each | |
Steel Body | ||||||||||
400 Series Stainless Steel Nose  | ||||||||||
| 0.125" | 0.252" | 0.035" | 0.093" | __ | 0.187" | 0.032" | 2 | 5 | 00000000 | 00000 |
| 0.125" | 0.252" | 0.035" | 0.094" | __ | 0.187" | 0.032" | 0.4 | 1.3 | 00000000 | 0000 |
| 0.125" | 0.252" | 0.035" | 0.094" | __ | 0.187" | 0.032" | 0.8 | 2.5 | 00000000 | 0000 |
| 0.157" | 0.33" | 0.046" | 1/8" | __ | 0.215" | 0.035" | 1.5 | 3.5 | 00000000 | 0000 |
| 0.157" | 0.33" | 0.046" | 1/8" | __ | 0.215" | 0.035" | 3 | 7.5 | 00000000 | 0000 |
| 0.188" | 0.394" | 0.058" | 0.156" | __ | 0.25" | 0.04" | 1 | 2.5 | 00000000 | 0000 |
| 0.188" | 0.394" | 0.058" | 0.156" | __ | 0.25" | 0.04" | 2 | 5 | 00000000 | 0000 |
| 0.188" | 0.405" | 0.058" | 0.156" | __ | 0.25" | 0.035" | 4 | 10 | 00000000 | 0000 |
| 0.25" | 0.471" | 0.07" | 0.187" | __ | 0.312" | 0.045" | 1.5 | 3.5 | 00000000 | 0000 |
| 0.25" | 0.471" | 0.07" | 0.187" | __ | 0.312" | 0.045" | 3 | 7 | 00000000 | 0000 |
| 0.25" | 0.481" | 0.07" | 0.187" | __ | 0.312" | 0.044" | 6 | 13 | 00000000 | 0000 |
| 0.312" | 0.643" | 0.09" | 1/4" | __ | 0.375" | 0.045" | 2 | 5 | 00000000 | 0000 |
| 0.312" | 0.643" | 0.09" | 1/4" | __ | 0.375" | 0.045" | 4 | 10 | 00000000 | 0000 |
| 0.312" | 0.643" | 0.09" | 1/4" | __ | 0.375" | 0.045" | 8 | 16 | 00000000 | 0000 |
| 0.375" | 0.785" | 0.11" | 0.312" | __ | 0.5" | 0.078" | 10 | 18 | 00000000 | 0000 |
| 0.375" | 0.786" | 0.11" | 0.312" | __ | 0.5" | 0.078" | 2.5 | 7 | 00000000 | 0000 |
| 0.375" | 0.786" | 0.11" | 0.312" | __ | 0.5" | 0.078" | 5 | 14 | 00000000 | 0000 |
| 0.5" | 1.1" | 0.161" | 0.437" | __ | 0.688" | 0.11" | 4 | 9 | 00000000 | 0000 |
| 0.5" | 1.1" | 0.161" | 0.437" | __ | 0.688" | 0.11" | 8 | 18 | 00000000 | 0000 |
| 0.5" | 1.13" | 0.161" | 0.437" | __ | 0.688" | 0.088" | 12 | 23 | 00000000 | 0000 |
Acetal Plastic Nose | ||||||||||
| 0.125" | 0.252" | 0.035" | 0.093" | __ | 0.187" | 0.032" | 2 | 5 | 000000 | 0000 |
| 0.157" | 0.33" | 0.046" | 1/8" | __ | 0.215" | 0.035" | 1.5 | 3.5 | 0000000 | 0000 |
| 0.157" | 0.33" | 0.046" | 1/8" | __ | 0.215" | 0.035" | 3 | 7.5 | 0000000 | 0000 |
| 0.188" | 0.405" | 0.058" | 0.156" | __ | 0.25" | 0.035" | 4 | 10 | 0000000 | 0000 |
| 0.25" | 0.481" | 0.07" | 0.187" | __ | 0.312" | 0.044" | 6 | 13 | 0000000 | 0000 |
| 0.312" | 0.643" | 0.09" | 1/4" | __ | 0.375" | 0.045" | 8 | 16 | 0000000 | 0000 |
| 0.375" | 0.785" | 0.11" | 0.312" | __ | 0.5" | 0.078" | 10 | 18 | 0000000 | 0000 |
| 0.5" | 1.13" | 0.161" | 0.437" | __ | 0.688" | 0.088" | 12 | 23 | 0000000 | 0000 |
Nylon Plastic Nose | ||||||||||
| 0.125" | 0.252" | 0.035" | 0.094" | -20° to 180° | 0.187" | 0.032" | 0.4 | 1.3 | 0000000 | 0000 |
| 0.125" | 0.252" | 0.035" | 0.094" | -20° to 180° | 0.187" | 0.032" | 0.8 | 2.5 | 0000000 | 0000 |
| 0.188" | 0.394" | 0.058" | 0.156" | -20° to 180° | 0.25" | 0.04" | 1 | 2.5 | 0000000 | 0000 |
| 0.188" | 0.394" | 0.058" | 0.156" | -20° to 180° | 0.25" | 0.04" | 2 | 5 | 0000000 | 0000 |
| 0.25" | 0.471" | 0.07" | 0.187" | -20° to 180° | 0.312" | 0.045" | 1.5 | 3.5 | 0000000 | 0000 |
| 0.25" | 0.471" | 0.07" | 0.187" | -20° to 180° | 0.312" | 0.045" | 3 | 7 | 0000000 | 0000 |
| 0.312" | 0.643" | 0.09" | 1/4" | -20° to 180° | 0.375" | 0.045" | 2 | 5 | 0000000 | 0000 |
| 0.312" | 0.643" | 0.09" | 1/4" | -20° to 180° | 0.375" | 0.045" | 4 | 10 | 0000000 | 0000 |
| 0.375" | 0.786" | 0.11" | 0.312" | -20° to 180° | 0.5" | 0.078" | 2.5 | 7 | 0000000 | 0000 |
| 0.375" | 0.786" | 0.11" | 0.312" | -20° to 180° | 0.5" | 0.078" | 5 | 14 | 0000000 | 0000 |
| 0.5" | 1.1" | 0.161" | 0.437" | -20° to 180° | 0.688" | 0.11" | 4 | 9 | 0000000 | 0000 |
| 0.5" | 1.1" | 0.161" | 0.437" | -20° to 180° | 0.688" | 0.11" | 8 | 18 | 0000000 | 0000 |
18-8 Stainless Steel Body | ||||||||||
400 Series Stainless Steel Nose | ||||||||||
| 0.125" | 0.252" | 0.035" | 0.093" | __ | 0.187" | 0.032" | 2 | 5 | 00000000 | 0000 |
| 0.125" | 0.252" | 0.035" | 0.094" | __ | 0.187" | 0.032" | 0.4 | 1.3 | 00000000 | 0000 |
| 0.125" | 0.252" | 0.035" | 0.094" | __ | 0.187" | 0.032" | 0.8 | 2.5 | 00000000 | 0000 |
| 0.157" | 0.16" | 0.04" | 0.12" | __ | 0.18" | 0.04" | 0.6 | 1.4 | 00000000 | 0000 |
| 0.157" | 0.33" | 0.046" | 1/8" | __ | 0.215" | 0.035" | 1.5 | 3.5 | 00000000 | 0000 |
| 0.157" | 0.33" | 0.046" | 1/8" | __ | 0.215" | 0.035" | 3 | 7.5 | 00000000 | 0000 |
| 0.188" | 0.394" | 0.058" | 0.156" | __ | 0.25" | 0.04" | 1 | 2.5 | 00000000 | 0000 |
| 0.188" | 0.394" | 0.058" | 0.156" | __ | 0.25" | 0.04" | 2 | 5 | 00000000 | 0000 |
| 0.188" | 0.405" | 0.058" | 0.156" | __ | 0.25" | 0.035" | 4 | 10 | 00000000 | 0000 |
| 0.2" | 0.2" | 0.06" | 0.16" | __ | 0.22" | 0.04" | 0.7 | 1.5 | 00000000 | 0000 |
| 0.24" | 0.24" | 0.07" | 0.2" | __ | 0.26" | 0.04" | 1.2 | 2.6 | 00000000 | 0000 |
| 0.25" | 0.471" | 0.07" | 0.187" | __ | 0.312" | 0.045" | 1.5 | 3.5 | 00000000 | 0000 |
| 0.25" | 0.471" | 0.07" | 0.187" | __ | 0.312" | 0.045" | 3 | 7 | 00000000 | 0000 |
| 0.25" | 0.481" | 0.07" | 0.187" | __ | 0.312" | 0.044" | 6 | 13 | 00000000 | 0000 |
| 0.31" | 0.31" | 0.09" | 0.26" | __ | 0.33" | 0.04" | 1.6 | 2.8 | 00000000 | 0000 |
| 0.312" | 0.643" | 0.09" | 1/4" | __ | 0.375" | 0.045" | 2 | 5 | 00000000 | 0000 |
| 0.312" | 0.643" | 0.09" | 1/4" | __ | 0.375" | 0.045" | 4 | 10 | 00000000 | 0000 |
| 0.312" | 0.643" | 0.09" | 1/4" | __ | 0.375" | 0.045" | 8 | 16 | 00000000 | 0000 |
| 0.375" | 0.785" | 0.11" | 0.312" | __ | 0.5" | 0.078" | 10 | 18 | 00000000 | 0000 |
| 0.375" | 0.786" | 0.11" | 0.312" | __ | 0.5" | 0.078" | 2.5 | 7 | 00000000 | 0000 |
| 0.375" | 0.786" | 0.11" | 0.312" | __ | 0.5" | 0.078" | 5 | 14 | 00000000 | 0000 |
| 0.394" | 0.45" | 0.13" | 0.33" | __ | 0.43" | 0.06" | 1.9 | 4.2 | 00000000 | 0000 |
| 0.472" | 0.54" | 0.16" | 0.39" | __ | 0.51" | 0.09" | 2.7 | 6 | 00000000 | 0000 |
| 0.5" | 1.1" | 0.161" | 0.437" | __ | 0.688" | 0.11" | 4 | 9 | 00000000 | 0000 |
| 0.5" | 1.1" | 0.161" | 0.437" | __ | 0.688" | 0.11" | 8 | 18 | 00000000 | 0000 |
| 0.5" | 1.13" | 0.161" | 0.437" | __ | 0.688" | 0.088" | 12 | 23 | 00000000 | 00000 |
Acetal Plastic Nose | ||||||||||
| 0.125" | 0.252" | 0.035" | 0.093" | -30° to 190° | 0.187" | 0.032" | 2 | 5 | 0000000 | 0000 |
| 0.157" | 0.33" | 0.046" | 1/8" | __ | 0.215" | 0.035" | 0.8 | 2 | 0000000 | 0000 |
| 0.157" | 0.33" | 0.046" | 1/8" | __ | 0.215" | 0.035" | 1.5 | 3.5 | 000000 | 0000 |
| 0.157" | 0.33" | 0.046" | 1/8" | __ | 0.215" | 0.035" | 3 | 7.5 | 0000000 | 0000 |
| 0.188" | 0.405" | 0.058" | 0.156" | -30° to 190° | 0.25" | 0.035" | 4 | 10 | 0000000 | 0000 |
| 0.25" | 0.481" | 0.07" | 0.187" | -30° to 190° | 0.312" | 0.044" | 6 | 13 | 0000000 | 0000 |
| 0.312" | 0.643" | 0.09" | 1/4" | -30° to 190° | 0.375" | 0.045" | 8 | 16 | 0000000 | 0000 |
| 0.375" | 0.785" | 0.11" | 0.312" | -30° to 190° | 0.5" | 0.078" | 10 | 18 | 0000000 | 0000 |
| 0.5" | 1.13" | 0.161" | 0.437" | -30° to 190° | 0.688" | 0.088" | 12 | 23 | 0000000 | 0000 |
Nylon Plastic Nose | ||||||||||
| 0.125" | 0.252" | 0.035" | 0.094" | -20° to 180° | 0.187" | 0.032" | 0.4 | 1.3 | 0000000 | 0000 |
| 0.125" | 0.252" | 0.035" | 0.094" | -20° to 180° | 0.187" | 0.032" | 0.8 | 2.5 | 0000000 | 0000 |
| 0.188" | 0.394" | 0.058" | 0.156" | -20° to 180° | 0.25" | 0.04" | 1 | 2.5 | 0000000 | 0000 |
| 0.188" | 0.394" | 0.058" | 0.156" | -20° to 180° | 0.25" | 0.04" | 2 | 5 | 0000000 | 0000 |
| 0.25" | 0.471" | 0.07" | 0.187" | -20° to 180° | 0.312" | 0.045" | 1.5 | 3.5 | 0000000 | 0000 |
| 0.25" | 0.471" | 0.07" | 0.187" | -20° to 180° | 0.312" | 0.045" | 3 | 7 | 0000000 | 0000 |
| 0.312" | 0.643" | 0.09" | 1/4" | -20° to 180° | 0.375" | 0.045" | 2 | 5 | 0000000 | 0000 |
| 0.312" | 0.643" | 0.09" | 1/4" | -20° to 180° | 0.375" | 0.045" | 4 | 10 | 0000000 | 0000 |
| 0.375" | 0.786" | 0.11" | 0.312" | -20° to 180° | 0.5" | 0.078" | 2.5 | 7 | 0000000 | 0000 |
| 0.375" | 0.786" | 0.11" | 0.312" | -20° to 180° | 0.5" | 0.078" | 5 | 14 | 0000000 | 0000 |
| 0.5" | 1.1" | 0.161" | 0.437" | -20° to 180° | 0.688" | 0.11" | 4 | 9 | 0000000 | 0000 |
| 0.5" | 1.1" | 0.161" | 0.437" | -20° to 180° | 0.688" | 0.11" | 8 | 18 | 0000000 | 0000 |
Metric
Body | Nose | Flange | Nose Force, lbs. | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia., mm | Lg., mm | Extended Lg., mm | Dia., mm | Temp. Range Min. | Temp. Range Max., °F | Dia., mm | Thick., mm | Extended | Compressed | Each | |
Acetal Plastic Body | |||||||||||
400 Series Stainless Steel Nose | |||||||||||
| 3 | 3.4 | 0.55 | 2 | Not Rated | 480° | 3.6 | 0.6 | 0.4 | 0.8 | 0000000 | 00000 |
| 4 | 4 | 0.8 | 3 | Not Rated | 480° | 4.6 | 1 | 0.7 | 1.3 | 0000000 | 0000 |
| 5 | 5 | 1 | 4 | Not Rated | 480° | 5.6 | 1 | 1.3 | 2.1 | 0000000 | 0000 |
| 6 | 6 | 1.6 | 5 | Not Rated | 480° | 6.5 | 1 | 1.4 | 2.8 | 0000000 | 0000 |
| 8 | 8 | 1.9 | 6.5 | Not Rated | 480° | 8.5 | 1 | 2.2 | 4.6 | 0000000 | 0000 |
| 10 | 12 | 2.4 | 8 | Not Rated | 480° | 11 | 1.5 | 2.7 | 5 | 0000000 | 0000 |
| 12 | 14.5 | 3.3 | 10 | Not Rated | 480° | 13 | 1.5 | 3.1 | 5.6 | 0000000 | 0000 |
Acetal Plastic Nose | |||||||||||
| 4 | 4 | 0.8 | 3 | Not Rated | 120° | 4.6 | 1 | 0.7 | 1.5 | 0000000 | 0000 |
| 5 | 5 | 1 | 4 | Not Rated | 120° | 5.6 | 1 | 1.3 | 2.1 | 0000000 | 0000 |
| 6 | 6 | 1.6 | 5 | Not Rated | 120° | 6.5 | 1 | 1.4 | 2.8 | 0000000 | 0000 |
| 8 | 8 | 1.9 | 6.5 | Not Rated | 120° | 8.5 | 1 | 2.2 | 4.6 | 0000000 | 0000 |
| 10 | 12 | 2.4 | 8 | Not Rated | 120° | 11 | 1.5 | 2.7 | 5 | 0000000 | 0000 |
| 12 | 14.5 | 3.3 | 10 | Not Rated | 120° | 13 | 1.5 | 3.1 | 5.6 | 0000000 | 0000 |
Brass Body | |||||||||||
400 Series Stainless Steel Nose | |||||||||||
| 3 | 3.4 | 0.6 | 2.4 | Not Rated | 480° | 3.6 | 0.6 | 0.4 | 0.8 | 0000000 | 0000 |
| 4 | 4 | 0.8 | 3 | Not Rated | 480° | 4.5 | 1 | 0.7 | 1.3 | 0000000 | 0000 |
| 5 | 5 | 1 | 4 | Not Rated | 480° | 5.5 | 1 | 0.9 | 1.5 | 0000000 | 0000 |
| 6 | 6 | 1.6 | 5 | Not Rated | 480° | 6.5 | 1 | 1.3 | 2.6 | 0000000 | 0000 |
| 8 | 8 | 1.9 | 6.5 | Not Rated | 480° | 8.5 | 1 | 1.8 | 2.8 | 0000000 | 0000 |
300 Series Stainless Steel Body | |||||||||||
400 Series Stainless Steel Nose | |||||||||||
| 3 | 3.4 | 0.7 | 2.4 | Not Rated | 480° | 3.5 | 0.6 | 0.4 | 0.8 | 0000000 | 0000 |
| 4 | 4.1 | 1 | 3 | Not Rated | 480° | 4.6 | 0.9 | 0.1 | 0.2 | 0000000 | 0000 |
| 4 | 4.1 | 1 | 3 | Not Rated | 480° | 4.6 | 0.9 | 0.6 | 1.3 | 0000000 | 0000 |
| 4 | 4.1 | 1 | 3 | Not Rated | 480° | 4.6 | 0.9 | 1.1 | 2.3 | 0000000 | 0000 |
| 4 | 9.8 | 0.9 | 3 | Not Rated | 480° | 4.6 | 0.9 | 2.9 | 4.3 | 0000000 | 0000 |
| 5 | 5.1 | 1.4 | 4 | Not Rated | 480° | 5.6 | 0.9 | 0.1 | 1.1 | 0000000 | 0000 |
| 5 | 5.1 | 1.4 | 4 | Not Rated | 480° | 5.6 | 0.9 | 0.7 | 1.5 | 0000000 | 0000 |
| 5 | 5.1 | 1.4 | 4 | Not Rated | 480° | 5.6 | 0.9 | 1.1 | 2.7 | 0000000 | 0000 |
| 5 | 11.1 | 1.3 | 4 | Not Rated | 480° | 5.6 | 0.9 | 4.3 | 6.6 | 0000000 | 0000 |
| 6 | 6 | 1.8 | 5 | Not Rated | 480° | 6.5 | 1 | 0.5 | 1.5 | 0000000 | 0000 |
| 6 | 6 | 1.8 | 5 | Not Rated | 480° | 6.5 | 1 | 1.2 | 2.6 | 0000000 | 0000 |
| 6 | 6 | 1.8 | 5 | Not Rated | 480° | 6.5 | 1 | 1.6 | 4.3 | 0000000 | 0000 |
| 6 | 14 | 1.7 | 5 | Not Rated | 480° | 6.5 | 1 | 6.3 | 10.7 | 0000000 | 0000 |
| 8 | 7.9 | 2.4 | 6.5 | Not Rated | 480° | 8.5 | 1.1 | 0.9 | 2 | 0000000 | 0000 |
| 8 | 7.9 | 2.4 | 6.5 | Not Rated | 480° | 8.5 | 1.1 | 1.6 | 2.8 | 0000000 | 0000 |
| 8 | 7.9 | 2.4 | 6.5 | Not Rated | 480° | 8.5 | 1.1 | 2.5 | 5.6 | 0000000 | 0000 |
| 8 | 16.9 | 2.3 | 6.5 | Not Rated | 480° | 8.5 | 1.1 | 9 | 15.1 | 0000000 | 0000 |
| 10 | 11.5 | 3.3 | 8.5 | Not Rated | 480° | 11 | 1.5 | 0.9 | 2.2 | 0000000 | 0000 |
| 10 | 11.5 | 3.3 | 8.5 | Not Rated | 480° | 11 | 1.5 | 1.9 | 4.2 | 0000000 | 0000 |
| 10 | 11.5 | 3.3 | 8.5 | Not Rated | 480° | 11 | 1.5 | 3.8 | 8.3 | 0000000 | 0000 |
| 10 | 24.5 | 3.1 | 8.5 | Not Rated | 480° | 11 | 1.5 | 14.8 | 23.6 | 0000000 | 0000 |
| 12 | 13.7 | 4 | 10 | Not Rated | 480° | 13 | 2.3 | 1.4 | 3.3 | 0000000 | 0000 |
| 12 | 13.7 | 4 | 10 | Not Rated | 480° | 13 | 2.3 | 2.7 | 6 | 0000000 | 0000 |
| 12 | 13.7 | 4 | 10 | Not Rated | 480° | 13 | 2.3 | 6.7 | 12.1 | 0000000 | 0000 |