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Plastic Inserts

Plastic Insert for Machine Screws

Plastic Inserts provide solid, secure fastening whether they are rapped into wood or plastic as an insert, or wrenched on studs like a nut. As an insert, this fastener's 8-point splined body prevents rotation as the screw is driven or removed. As a nut, the fasteners splines fit a standard 8-point socket wrench. These plastic inserts are available pre-tapped, for use with machine screws to increase ease of assembly, or plain, for use with tapping or machine screws where prevailing torque is required.

Tinnerman Plastic Inserts may be easily rapped into wood or plastic as an insert, or wrenched on studs like a nut. Either way, TPI's provide solid, secure fastening at minimum cost.

Two types of TPI (Tinnerman Plastic Inserts) Nut fasteners are available: Pretapped, these fasteners are used with machine screws for greater ease of assembly and plain for use with tapping or with machine screws, where prevailing torque is a requisite. This screw fastener forms its own thread as driven. Listed are sizes for No. 10 though 5/16 screws showing torque and tensile values.

When seated as plastic inserts, the 8-point splined fastener body prevents rotation as the screw is driven or removed. Used as a nut, the fastener splines fit a standard 8-point socket wrench. TPI fasteners are molded of polycarbonate resin, which has many inherent advantages for these fasteners. These fasteners are non-toxic, have a very low absorption rate and can be painted. Mechanical properties approach those of metals. TPI Nut fasteners are also corrosion proof, have excellent dielectric properties and will withstand temperatures ranging from -50 to 250 degrees Fahrenheit.



 
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