Description
Captive Locating Screws with Hand Knob
These Captive Locating Screws have an integral hand knob for tightening by hand. Captive Locating Screws can be used for locating and clamping, or for clamping only, by selecting the appropriate screw length. The locating screw’s precision-ground body is positively retained in a locking bushing. In fully retracted position, the bushing’s spring clip snaps into the body’s radial groove. This holds the screw fully retracted by spring force and positively prevents removal. Spring pressure also holds the screw in intermediate extended positions, an advantage especially if the fixture is turned upside down. Made in USA.The complete assemblies listed below include a Captive Locating Screw, Locking-Pin Bushing, and Lockscrew. Choice of standard or long bushing in most sizes, for installation in thinner or thicker plates. Locking-Pin Bushings are designed to press fit in a standard reamed hole, and can be further secured with the included Lockscrew to positively hold the bushing in place.
Application Information
In fully retracted position, the bushing’s spring clip holds the Locating Screw fully retracted by spring force and positively prevents removal. Spring pressure also holds the screw in intermediate extended positions.
Material
| Steel | |||
| Item | Material | Heat Treat | Finish |
| Knob | 319 Aluminum Alloy | – | N/A |
| Screw | 1215 Steel | Carburized-hardened | Black Oxide |
| Locking Bushing | 1144 Steel or Equivalent | Carburized-hardened | Black Oxide |
| Retainer Clip | Stainless Steel | – | N/A |
Parts Specification
| A Diameter Nominal (Inch) | A Diameter Actual (Inch) | B Screw Length (Inch) | P Bushing Length Under Head (Inch) | P (Inch) | C (Inch) | D (Inch) | E Thread (Inch) | F (Inch) | G (Inch) | K Diameter (Inch) | L (Inch) | M (Inch) | N Diameter Nominal (Inch) | N Diameter Actual (Inch) | R (Inch) | S Diameter (Inch) |
| 3/8″ | 0.3740″ | 1-1/2″ | Long” | 0.50″ | 2.5″ | 1.5″ | 3/8-16″ | 0.56″ | 0.75″ | 1″ | 1.06″ | 0.41″ | 5/8″ | 0.6267″ | 0.62″ | 13/16″ |
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