Nylon patch locking element

Made from alloy steel, these screws are nearly twice as strong as stainless steel flat head screws. Made from stainless steel, these metric set screws are chemical resistant. They have a nylon locking patch that grips threads to resist loosening. These stainless steel set screws are chemical resistant. More corrosion resistant than stainless steel set screws, these have excellent resistance to chemicals and salt water. These alloy steel set screws have a thin edge that digs into hard surfaces for a secure hold.

A nylon locking element grips threads to resist loosening. Made from alloy steel, these metric set screws have a thin edge that digs into hard surfaces for a secure hold. A nylon locking patch grips threads to resist loosening. Also known as jam set screws, these lock other screws in place, hold pins, and adjust spring tension.

A black-oxide finish provides corrosion resistance in dry environments. Stainless steel set screws have excellent corrosion resistance in most environments. Made from Grade 8 steel, these screws can be used in high-stress applications, such as valves, pumps, motors, and automotive suspension systems.

They are more than twice as strong as our stainless steel thread-locking screws. The thread locker helps resist loosening from vibration. These Class 8. For vibration resistance, they have a thread locker bonded to the threads.

Made from stainless steel, these screws have good chemical resistance. More corrosion resistant than stainless steel shoulder screws, these have excellent resistance to chemicals and salt water. A locking element on the threads adds friction to resist loosening.

Comparable to Grade 8 steel, these alloy steel shoulder screws are the strongest we offer. Available in metric sizes, these screws have a locking element on the threads that adds friction to resist loosening. Comparable to Grade 8 steel, they are the strongest screws we offer. System of Measurement. Thread Size. Head Type. Drive Style. Thread Locker Type. Specifications Met. Head Diameter.

Chemical Adhesives. Under-the head Sealants. Thread Sealants. Powder Coating. This metal to metal contact results in a positive resistance to vibration and loosening. Since nylon has great memory characteristics, this locking element can be reused several times. Note order placement does not guarantee stock fulfillment due to high demand. The fasteners then proceed onto a conveyor 40 where they are air-cooled for a short time, from about one to five minutes, and then immersed in a conditioning bath Conveyor 44 carries the fasteners through bath 42 and deposits them onto still another conveyor 46 which carries the fasteners through an infrared drying oven 48 and ultimately drops the fasteners into any suitable shipping or storage container In accordance with one preferred embodiment of the present invention, the applicator employed to form and direct the air-entrained powder into the fastener is that illustrated in FIGS.

The applicator 50 comprises a spray head or nozzle 52 , forming a generally arcuate, radially opening slot which is supplied with a pressurized air stream carrying the air-entrained nylon powder via conduit A cylinder 56 is mounted concentrically around conduit 54 , the cylinder having a closed end 58 and an open end 60 located immediately adjacent nozzle These components thereby define a generally annular vacuum nozzle 62 connected to a vacuum source via port The nylon powder may be delivered to the threaded surface 18 of the fastener with the nozzle 52 located at a fixed axial position within bore However, unexpected advantages have been obtained by applying the powder while the nozzle 52 , together with vacuum nozzle 62 , moves axially within bore Most preferably, the powder is applied while the nozzles 52 and 62 move axially first in one direction and then in the opposite direction along only an interior portion of the bore This powder application technique has been found to substantially reduce the variance in prevailing-torque performance values that otherwise occur with a stationary nozzle, depending upon the angular orientation of the nozzle relative to the start point of the fastener's lead threads.

Another applicator mechanism is illustrated in FIGS. Here, two applicators 62 and 64 are mounted in a base block The applicators each include a central conduit 68 , terminating in a powder spray nozzle 70 with dispensing slot A cylinder 72 is mounted concentrically around conduit 68 and has a radial cut at its free end which forms a vacuum slot 74 when the spray nozzle 70 is mounted over it.

The block 66 includes passageways 76 for transmission of a coolant as indicated by the arrows and vacuum ports 78 which communicate with the interior of cylinder The ability to meet both the clamp load torque window and minimum removal torques specified in these IFI standards results, in part, from a post patch application treatment which conditions the frictional properties of the nylon patch locking element and the threaded surface of the fastener, as well.

Preferably, the fastener with the pre-applied patch is immersed, sprayed or otherwise effectively wetted with a wax containing aqueous emulsion. In the process illustrated schematically in FIG. While a variety of natural or synthetic waxes may be employed, a bath comprising an aqueous hydrocarbon wax dispersion has been found satisfactory.

The fasteners are thoroughly wetted with the solution and thereafter dried in any conventional manner. Of course, it should be understood that various changes and modifications to the preferred embodiments described herein will be apparent to those skilled in the art. Such changes and modifications can be made without departing from the spirit and scope of the present invention and without diminishing its attendant advantages. It is, therefore, intended that such changes and modifications be covered by the following claims.

We claim: 1. A method of manufacturing a prevailing-torque internally threaded fastener comprising the steps of:. The fastener manufacturing method of claim 1 wherein the polymeric resin is applied to the threaded surface by directing an air-entrained powdered resin stream onto the threaded surface.

The fastener manufacturing method of claim 2 wherein the fastener threaded surface is heated prior to application of the resin. The fastener manufacturing method of claim 2 wherein the fastener is zinc plated. The fastener manufacturing method of claim 2 wherein a plurality of air-entrained resin streams are sequentially directed onto the threaded surface.

The fastener manufacturing method of claim 2 wherein the air-entrained resin stream is directed onto the threaded surface while the stream is moving axially within the bore relative to the body. The fastener manufacturing method of claim 6 wherein the air-entrained resin stream moves axially in one direction and then in the opposite direction while the resin is applied to the threaded surface.

The fastener manufacturing method of claim 2 wherein the air-entrained resin stream is directed onto the threaded surface by means of an axially extending applicator having a radially opening nozzle at its free end and a vacuum port disposed adjacent the nozzle. The fastener manufacturing method of claim 1 wherein after application to the threaded surface, the resin is subjected to a conditioning treatment by wetting the resin with a wax containing aqueous emulsion.

Improved automatic lock type fastener with inner side screw and method of manufacturing it. Internally threaded fastener with predominant torque and method to manufacture the same.

Improved prevailing-torque internally threaded fastener and method of manufacture. USB1 en. EPB1 en. JPA en.