Product Announcement from Stock Drive Products/Sterling Instrument - SDP/SI

Shaftloc® from SDP: The Ultimate Fastening Device-Image

New Hyde Park, NY -- Shaftloc® Fastening Device is Simply Superior!

Shaftloc® is a patented rotating component fastening device, produced by Stock Drive Products (An ISO 9001 Registered Manufacturer). A surprisingly simple design, it eliminates all the disadvantages of traditional methods for fastening components to shafts.

There are several different styles available for the Shaftloc® Fastener, but they all feature a simple two-piece construction with corresponding male and female threads. The sleeves slide over the shaft on either side of the component to be secured. The threads are assymetrical so that the two sleeves wedge together around the shaft, holding the part between them. Hex heads make it easy to tighten the Shaftloc® sufficiently, and to unscrew it to make adjustments as needed.

Because the design is so simple, it is very easy to install and low cost. Because there are no set screws, it can be reused and adjusted many times over without ever marring the shaft. The shallow angle of the thread produces large amplification of forces, resulting in substantial torque transmission capability between the component and the shaft.

SDP/SI is a leading manufacturer of small mechanical components, servicing a wide variety of aerospace, medical and commercial industries for over 50 years. Quotes, online orders, and 3D CAD Models are available on our updated estore at SDP/SI offers over 130,000 small mechanical components, including gears, belt and chain drives, shafts, shaft accessories, bearings, couplings, universal joints, vibration mounts, miscellaneous components, hardware, gearheads and speed reducers, right angle drives, brakes and clutches, motors and gearmotors. For additional information about SDP/SI please visit

Stock Drive Products / Sterling Instrument (SDP/SI), 2101 Jericho Turnpike, P.O. Box 5416, New Hyde Park, NY 11042-5416. Phone: 1-800-819-8900 | 516-328-3300 • Fax: 516-326-8827.

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