GUK Self-Locking Nut | DIN 981 | Vibration-Resistant Fastener
Order GUK self-locking nuts for secure, reusable shaft retention. DIN 981 certified, vibration-resistant, in-stock for fast delivery. Download datasheet or request a quote now!
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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GUK Self-Locking Nut: Advanced Fastening for Demanding Applications
The GUK self-locking nut is engineered for superior performance in high-vibration and heavy-duty industrial settings. Featuring a robust nylon insert, this nut maintains a secure grip on shafts while allowing for easy, repeated installation and removal. Fully compliant with DIN 981 standards, it’s ideal for applications where reliability and precision are non-negotiable.
Perfect for use in machinery, automotive systems, and automated production lines, the GUK self-locking nut offers proven durability and peace of mind. Download the full technical datasheet or request a fast quote today. Need help selecting the right size? Contact our engineering team for expert support.