CS GUK Self-Locking Nuts | Vibration Resistant Bearing Fasteners | Taiwan Manufacturer
CS GUK Self-Locking Nuts feature PA6 nylon inserts for superior vibration resistance in bearing applications. Available in sizes M10-M100, these Taiwan-manufactured fasteners eliminate the need for lock washers or keyways. Ideal for industrial machinery requiring reliable fastening solutions with 100°C temperature tolerance.
GUK Self-Locking Nut
GUK Self-locking nuts are self-locking due to their nylon PA6 insert. Therefore, they can also be used as retaining nuts and can be used multiple times. The thread series mainly corresponds to cylindrical bearing slotted lock nuts according to DIN 981.
GUK self-locking nuts add a nylon insert that sits on top of the nut to deform on the mating thread and catch the bolt or stud. This provides a locking function that creates resistance - or primary torque - to lock the nut in place and resist vibration.
In addition to the nylon PA6 self-locking feature, GUK self-locking nuts are equipped with four equally spaced grooves on the outside diameter of the nut, which allow a hook wrench to easily tighten or loosen the nut. These self-locking nuts are not suitable for high temperature over 100 degree applications. For further information, please contact us immediately.
• Material: Nut-SS400 Elastic Ring: PA6
• SUITABLE MAX TEMPERATURE: 100 degree.
• Finish: Zinc plated / C. TOLERANCE 4H
Model
GUK00, GUK01, GUK02, GUK03, GUK04, GUK05, GUK06, GUK07, GUK08, GUK09, GUK10, GUK11, GUK12, GUK13, GUK14, GUK15, GUK16, GUK17, GUK18, GUK19, GUK20
Drawing
GUK Drawing
Self-Locking Nuts - GUK
| Item NO. | Thread * pitch | H mm | h mm | D mm | D2 mm | t mm | S mm | No. of Grooves for Hook | KG |
|---|---|---|---|---|---|---|---|---|---|
| GUK00 | M10*0.75 | 7.4 | 4.5 | 18 | 15 | 15 | 3 | 4 | 0.009 |
| GUK01 | M12*1.0 | 7.4 | 4.5 | 21 | 18 | 18 | 3 | 4 | 0.009 |
| GUK02 | M15*1.0 | 8.4 | 5.5 | 24 | 21 | 21 | 4 | 4 | 0.012 |
| GUK03 | M17*1.0 | 8.4 | 5.5 | 28 | 24 | 24 | 4 | 4 | 0.018 |
| GUK04 | M20*1.0 | 9.4 | 6.5 | 32 | 27 | 27 | 4 | 4 | 0.025 |
| GUK05 | M25*1.5 | 10.3 | 6.5 | 38 | 33 | 33 | 5 | 4 | 0.035 |
| GUK06 | M30*1.5 | 10.9 | 6.5 | 44 | 38 | 38 | 5 | 4 | 0.046 |
| GUK07 | M35*1.5 | 11.1 | 7 | 50 | 44 | 44 | 5 | 4 | 0.062 |
| GUK08 | M40*1.5 | 12.1 | 8.2 | 56 | 50 | 50 | 6 | 4 | 0.080 |
| GUK09 | M45*1.5 | 12.1 | 8.2 | 62 | 55 | 55 | 6 | 4 | 0.095 |
| GUK10 | M50*1.5 | 12.7 | 8.5 | 68 | 61 | 61 | 6 | 4 | 0.130 |
| GUK11 | M55*2.0 | 13.2 | 8.5 | 75 | 68 | 68 | 7 | 6 | 0.160 |
| GUK12 | M60*2.0 | 13.2 | 8.5 | 80 | 73 | 73 | 7 | 6 | 0.170 |
| GUK13 | M65*2.0 | 14.3 | 9.5 | 85 | 77 | 77 | 7 | 6 | 0.185 |
| GUK14 | M70*2.0 | 14.3 | 9.5 | 92 | 84 | 84 | 8 | 6 | 0.230 |
| GUK15 | M75*2.0 | 15.3 | 10.5 | 98 | 89 | 89 | 8 | 6 | 0.270 |
| GUK16 | M80*2.0 | 16.3 | 11.5 | 105 | 96 | 96 | 8 | 8 | 0.340 |
| GUK17 | M85*2.0 | 17.3 | 12.5 | 110 | 100 | 100 | 8 | 8 | 0.390 |
| GUK18 | M90*2.0 | 17.5 | 12.5 | 120 | 110 | 110 | 10 | 8 | 0.540 |
| GUK19 | M95*2.0 | 18.5 | 13.5 | 125 | 115 | 115 | 10 | 8 | 0.600 |
| GUK20 | M100*2.0 | 19.5 | 14.5 | 130 | 120 | 120 | 10 | 8 | 0.680 |
* Unnecessary to add any tooth lock washer.
* Unnecessary to mill a keyway on the shaft and shorten its assembled time.
* Allow to be used after repeatedly screwing.
* Bearing any vibration and ensuring the integrated resistance when not tightened.
* The surface is galvanized to prevent rust.
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Spec. of GUK
Spec. of GUK00, GUK01, GUK02, GUK03, GUK04, GUK05, GUK06, GUK07, GUK08, GUK09, GUK10, GUK11, GUK12, GUK13, GUK14, GUK15, GUK16, GUK17, GUK18, GUK19, GUK20
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How do GUK Self-Locking Nuts eliminate vibration-related bearing failures in high-stress applications?
GUK Self-Locking Nuts feature an integrated nylon PA6 insert that deforms precisely against mating threads, creating consistent resistance that prevents loosening under severe vibration. Unlike conventional fastening methods, this system maintains reliable retention force throughout operational cycles without degradation, eliminating the common causes of bearing failure. Our customers report up to 87% reduction in vibration-related maintenance issues after switching to CS GUK Self-Locking Nuts in their high-stress applications.
Each GUK Self-Locking Nut is manufactured from premium SS400 steel with zinc plating for enhanced corrosion protection, while featuring strategically positioned hook wrench grooves for simplified installation and removal. The integrated PA6 nylon element creates reliable self-locking functionality through controlled thread deformation, maintaining consistent torque resistance even after multiple assembly cycles. With operational temperature capabilities up to 100°C and precision 4H tolerances, these Taiwan-manufactured fasteners deliver exceptional performance for machinery requiring secure bearing retention in vibration-intensive applications.