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NBK America LLC
307 East Church Rd. Suite 7
King of Prussia PA 19406

PEEK, RENY, PVDF & other engineering plastic fasteners, springs, and custom parts.

We have 2000+ types of plastic fasteners as off-the-shelf items in CA and in our factories.
We are the top supplier to semiconductor, medical equipment makers, measurement equipment, oil & gas industry, aerospace, military, and electronics manufacturers. PEEK, RENY, PVDF, Polycarbonate, PPS, PFA, PTFE, PVC, Polyacetal, Polypropylene, and PA fasteners are in stock at the factory and lead time is typically 3-7 days. Custom plastic fasteners and parts are also available, often with short lead time.

All of polymers below do not contain any of the six substances (Lead, cadmium, mercury, hexavalent chrome, PBB, PBDE) restricted by RoHS.


Polyether ether ketone


PEEK (Polyether ether ketone) is a semicrystalline super engineering plastic with the highest level of performance. Concentrated sulfuric acid is the only general purpose chemical in which PEEK can be dissolved. Moreover, it has excellent heat resistance, abrasion resistance, flame resistance and hydrolysis resistance, and it is used in various fields like OA equipments, automobiles, IC wafer carrier and LCD manufacturing jigs.

Continuous use temperature: 356°F / 180°C Flammability: UL94 V-0




PVDF (Polyvinylidene-fluoride) is a balanced engineering plastic with excellent performance and molding workability like general purpose resin. It has excellent resistance to chemicals and weather, and it is used in various fields as electronic materials of binders for lithium-ion batteries, fishing line, strings of musical instruments, bulb and lining of electrodes.

Continuous use temperature: 302°F / 150°C Flammability: UL94 V-0


Glass-fiber-reinforced polyamide MXD6


RENY is a crystalline engineering plastic re-inforced with 50% glass fiber with polyamide MXD6 (super nylon) as the base polymer. Among all plastics, it has the highest strength and coefficient of elasticity. Moreover, due to its excellent oil resistance and heat resistance, it is used in transportation machinery parts such as automobiles, general machinery, precision machinery parts, electrical and electronic equipments parts and civil engineering and construction material in place of metals.

Continuous use temperature: 221°F / 105°C Flammability: UL94 HB


Polytetrafluoroethylene resin


PTFE (Polytetrafluoroethylene resin) is a key resin in fluorine series of resins. It is inactive to most of the chemicals and solvents. In addition, it can be widely used in the fields of chemical, electrical, mechanical and aviation due to its excellent electrical characteristics, nonadhesiveness and lubricating properties.

Continuous use temperature: 500°F / 260°C Flammability: UL94 V-0


Perfluoro alkoxyalkane


PFA (Perfluoro alkoxyalkane) is a thermoplastic fluoro resin with excellent chemical, electrical and machine characteristics. Chemically it is a highly stable material and it is not affected by most of the chemicals. It is the most suitable material for semiconductor industry where periodic exposure to highly active chemicals is required.

Continuous use temperature: 500°F / 260°C Flammability: UL94 V-0


Polyphenylene sulfide


PPS (Polyphenylene sulfide) is a crystalline super engineering plastic. It has excellent thermal resistance, and its properties hardly deteriorate even when using for long time under high temperature environment. Moreover, it has excellent chemical resistance, mechanical properties, electrical properties, and dimensional stability, and it is widely used in electrical and electronic parts, automobiles parts, chemical machinery parts etc.

Continuous use temperature: 392°F / 200°C Flammability: UL94 V-0




POM (Polyacetal) is a crystalline engineering plastic. It has balanced mechanical properties and excellent fatigue resistance, creep resistance, friction and abrasion resistance and chemical resistance. Therefore, it is widely used in fields like electrical machineries, automobiles, machineries and construction in place of metals.

Continuous use temperature: 203°F / 95°C Flammability: UL94 HB


Polyamide (Nylon)


PA (Polyamide = Nylon) is a crystalline engineering plastic. It is a strong material with small coefficient of friction. Despite of that, it has excellent resistance to abrasion and self extinguishing properties. Since it is also oil resistant and chemical resistant, it is suitable for machine material. However, one drawback is that its high hygroscopic properties must be considered during design. We offer PA6, PA66 and PA12 products

Temperature: 149°F / 65°C (PA6) 167°F / 75°C (PA66) 223°F / 106°C (PA12)
Flammability: UL94 V-2 (PA6, PA66) L94 HB (PA12)


Alumina 96%


Ceramic (Alumina 96%) is widely used as general ceramics in large machinery parts and precision machinery parts due to its abrasion resistance, very high hardness and stable dimension. In addition, it can be glued to metals with heat treatment. Also, it is widely used in semiconductor equipments due to excellent corrosion resistance and absence of outgas in high temperature gases.

Continuous use temperature: 2732°F / 1500°C Flammability: N/A




PO (Polysoul) is interlinking material of rolling extension nylon sheet, and it is oil-less lubricant with oil bearing film surface. It has excelled abrasion resistance and very little creep deformation. It supports high speed and high load, it is thin and light weight and has 4 salient features. It is suitable for places, "which can not be exposed to oil", "which require some sliding", "which can not be maintained". It is used as thrust washer in various equipment parts.

Continuous use temperature: 149°F / 65°C Flammability: N/A




PS (Polyslider) is manufactured by uniformly distributing graphite particles in the composition using excellent properties of polyamide such that the floating graphite particles form oblate graphite layer on the tape surface. There is almost no creep deformation due to surface pressure, and it has excellent creep resistance, friction and abrasion characteristics. It is used as thrust washer in various equipment parts.

Continuous use temperature: 149°F / 65°C Flammability: UL94 HB



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PC (polycarbonate) is a non-crystalline engineering plastic. It has excellent impact resistance and balanced mechanical properties and electrical properties. Moreover, because it is transparent and self extinguishing, it is used in wide range of fields such as electrical and electronic area, automobiles and medical.

Continuous use temperature: 239°F / 115°C Flammability: UL94 V-2




PP (Polypropylene) is a leading crystalline general purpose plastic. With the specific gravity of 0.9, it is lightest among all general purpose plastics. Moreover, due to its excellent chemical resistance, hydrolysis resistance and electrical properties, it is used in wide range of fields as a plastic with large range of applications. It is frequently used as a replacement material for PVC (poly-vinyl chloride), which has recently come under scanner due to dioxin generation.

Continuous use temperature: 149°F / 65°C Flammability: UL94 HB




PI (Polyimide) has excellent heat resistance, excellent abrasion and wear resistance and friction performance under high pressure and high speed scraping, low outgas properties under high vacuum state, excellent chemical resistance and machine characteristics, extraordinary dimensional stability (no melting point and glass transition point), as well as low electrical conductivity.

Continuous use temperature: 572°F / 300°C Flammability: UL94 V-0


Polyvinyl chloride


PVC (Polyvinyl chloride) is excellent water, acid, alkali and solvent resistance, PVC is used in water distributing pipes. PVC is inferior heat resistance, it generates hazardous substances like chlorine gas upon combustion.

Continuous use temperature: 95°F / 35°C Flammability: N/A