TufLok®/Nytemp® for self-locking external threads
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TufLok®/Nytemp® for self-locking external threads TufLok® – „der blaue Fleck“ (the blue patch) has proven highly successful in practical applications around the globe: In the automotive engineering industry, in heavy-duty machinery, fittings and appliance construction, in hydraulic systems, electrical and precision mechanics and in optical applications. The TufLok spot is also suitable for use wherever other systems are unable to meet requirements for technical or economic reasons: • For extremely small screws – from M 0,8 • For screws made of hard materials • For screws whose cross-section must not be weakened • For threaded bolts Field of application • TufLok®: Temperature resistant from -56° to +120°C. Following prior practical testing, applications up to +150°C are possible. • Nytemp®: For high-temperature screw locking for continuous thermal stress of up to 200°C (higher thermal stress also possible for short periods). • TufLok®: Does not dry out, shrink or decompose, has a practically unlimited storage life. Resistant to alcohol, oil, petrol and most thinners. The TufLok coating is also suitable for use in the food industry. 6 Product features Installation • Excellent locking effect compared to other methods; even if screws are not correctly tightened. TufLok screws are mounted either mechanically or manually using conventional tools. The TufLok screw enhances productivity due to its capacity for fully automatic feed and installation. The female thread does not need to be free of oil or grease, so allowing torque levels to be decreased. • Vibration-resistant in every screw-in position. This makes the TufLok screw ideally suited as an adjusting screw. • Fluid and gas-tight seal. The nylon layer presses firmly into the flanks of the thread, so preventing the ingress of media. All-round coating is recommended for these applications. • Replaces positive locking elements which are often forgotten and lost during assembly. The blue TufLok dot is an integral part of the screw and cannot be lost. • Multiple use. The highly elastic blue TufLok spot always endeavours to regain its original shape. Its systemtypical spray edge area safeguards the contact surface from shearing off. • No drying time whatsoever required – immediately capable of withstanding stress. No problems also when tightening the TufLok screw during final installation. • Suitable for all metallic materials, also for threaded components made of stainless steels, light alloys and brass, as well as for almost all surface-treated parts. Coating Coating takes place in accordance with works standard 900.1. It is also possible for galvanized screws to be chromated after TufLok coating; The concentration of nitric acid for activation of the zinc coat may not exceed five percent, it should always be kept as low as possible. Optimum results are achieved with a clean, smooth and chip-free nut thread in the medium tolerance category. We generally recommend countersinking the female thread. The TufLok system can be used without problems in running production series without any need for tool modification. Most special requirements relating to the position of the coating and the degree of torque can be accommodated. Testing Testing generally takes place in accordance with WS 900.1. Other test methods must always be specified, and can include: • DIN 267, part 28 • DIN EN ISO 2320 • Customer test specimen with torque specification

... technologies for a reliable hold Thread coating with nylon TufLok®/Nytemp® Clamping coating in accordance with DIN 267, Part 28 Application Normal coating For the manufacture of ready-toassemble, self-locking and sealing screws and threaded parts from M 0,8 to M 68. Works Standard 900.1 Coating angle α in the screw body area ≈ 90°, edge zone (spray transition) up to ≈ 180°. Coating length B1 ≈ 4 to 6 thread turns. Around 2 to 3 thread turns remain uncoated to ensure flawless installation (B2). B1 B2 α A Torque levels according to Works Standard Screws ISO 6g II First unscrewing III...

TufLok®/Nytemp® for self locking internal threads Self-locking internal threads are coated with a highly elastic nylon layer, TufLok® –„der blaue Fleck“ (the blue patch). When screwing on the internal thread, this blue TufLok spot brings about a high level of surface pressure against the flanks of the mating thread. The nylon layer also fills out the axial backlash between the threads of the screw and nut, producing a vibrationproof connection which prevents the thread from working loose under dynamic stress, but can be released at any time. Field of application Self-locking TufLok internal...

... technologies for a reliable hold Thread coating with nylon TufLok®/Nytemp® Clamping coating in accordance with DIN EN ISO 2320 Application Standard coating For screw fastenings which are both vibration-resistant and capable of release at any time. Works Standard 945 - patch coating - 360° all round B F A Torque values according to Works Standard Thread nut Dimensions in mm Clamping torque strength class 5 and 8 strength class 10 and 12 First screwing on max. M 5 M 6 M 8 M10 M12 First unscrewing min. Fifth unscrewing min. First screwing on max. first unscrewing min. Fifth unscrewing min....