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Add-a-Knob Weld-Mount Retractable Spring Plungers
Spring Plunger
Replacement Barrel Sleeve
Add a knob or handle to the threaded shank. Weld these spring plungers in place for a strong permanent hold. They have a long nose that provides a large bearing surface to handle side loads; pull the handle to retract the nose.
Steel is strong and wear resistant.
18-8 stainless steel is chemical resistant and may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.
Spring Plungers | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Body | Nose | Knob End | Replacement Barrel Sleeves | |||||||
| Wd. | Lg. | Dia. | Extended Lg. | Thread Size  | Thread Length | Temperature Range, ° F | Each | Each | ||
18-8 Stainless Steel Body and 18-8 Stainless Steel Nose | ||||||||||
| 1" | 1.5" | 0.375" | 0.563" | 3/8"-16 | 1/2" | 0° to 165° | 000000000 | 000000 | 000000000 | 000000 |
| 1" | 1.5" | 0.5" | 0.563" | 3/8"-16 | 1/2" | 0° to 165° | 000000000 | 00000 | 000000000 | 00000 |
| 1" | 2.25" | 0.5" | 0.563" | 3/8"-16 | 1/2" | 0° to 165° | 000000000 | 00000 | 000000000 | 00000 |
Steel Body and Zinc-Plated Steel Nose | ||||||||||
| 1" | 1.5" | 0.375" | 0.563" | 3/8"-16 | 1/2" | 0° to 165° | 000000000 | 00000 | 000000000 | 0000 |
| 1" | 1.5" | 0.5" | 0.563" | 3/8"-16 | 1/2" | 0° to 165° | 000000000 | 00000 | 000000000 | 0000 |
| 1" | 2.25" | 0.5" | 0.563" | 3/8"-16 | 1/2" | 0° to 165° | 000000000 | 00000 | 000000000 | 0000 |