A: It depends.If we have bulk goods in stock, we can ship goods within 3 days after the QC process. If we don’t have stock, normally it takes 7-15 days for OEM samples and 20-30 days for bulk goods. If it refers to opening the new mold, it takes an extra 7-15 days to make the mold.
Kep Nut
K-Lock Nuts (Keps Nuts with Lock Washers): Overview
Material:
- Common materials:
- Carbon steel: Grade 8/10 (heat-treated for high strength), zinc-plated or galvanized.
- Stainless steel: 304/316 (corrosion resistance in harsh environments).
- Nylon insert: Glass-filled nylon for vibration resistance (in Keps-style nuts).
- Surface treatments: Zinc plating, Dacromet coating, or passivation (stainless steel) for durability.
Manufacturing Process:
- Cold Heading: Forms the hexagonal nut body from steel wire.
- Thread Rolling: Precision rolling of internal threads (metric/SAE) for compatibility.
- Washer Integration:
- Keps nuts: A free-spinning external tooth lock washer is pre-assembled via crimping.
- Nylon insert nuts: Press-fit a nylon ring into a machined groove.
- Heat Treatment: Applied to carbon steel nuts to enhance hardness (HRC 22-35).
- Surface Finishing: Electroplating or coating for corrosion resistance.
Key Production Considerations:
- Washer alignment: Ensure teeth/washers are symmetrically attached to prevent uneven locking force.
- Thread concentricity: Avoid cross-threading risks with precise die alignment.
- Nylon insert quality: Uniform density and moisture resistance for consistent friction.
- Coating adhesion: Prevent flaking on threads or washer contact surfaces.
Applications:
- Automotive: Engine components, transmission systems, and wheel assemblies.
- Electronics: Securing PCBs, enclosures, and connectors in high-vibration devices.
- Industrial machinery: Pumps, compressors, and conveyor systems.
- Aerospace: Lightweight assemblies requiring reusable locking.
- Consumer goods: Furniture, bicycles, and appliances.
Installation:
- Tool selection: Use a wrench or socket matching the nut’s hex size (e.g., 10mm, ½”).
- Alignment: Hand-tighten the nut until the washer contacts the surface.
- Torque application: Tighten to manufacturer specifications (e.g., 15–100 Nm for M6–M20 nuts).
- For Keps nuts: The washer’s teeth bite into the mating surface to prevent rotation.
- For nylon insert nuts: Tighten until the nylon engages the bolt threads.
- Inspection: Check for washer deformation or nylon ring integrity post-installation.
Note:
- Reusability: Nylon insert nuts are limited to 3–5 uses; Keps nuts can be reused if undamaged.
- Temperature limits: Avoid nylon inserts above 120°C; use all-metal Keps nuts for high temps.
- Load capacity: Match nut grade to bolt strength (e.g., Grade 10 nut with Grade 10.9 bolt).
Ideal for engineers and technicians needing vibration-resistant, reusable fastening in automotive, industrial, or consumer applications.
Key Terms: K-Lock Nuts, Keps Nuts, Nylon Insert Nuts, DIN 985, Vibration-Resistant Fasteners.
Character Count: Optimized for technical clarity and brevity.
Frequently Asked Questions
A: Normally, we make a 30% deposit after Pl confirmation and a 70% balance before shipment. lf order amountis too small, we can also change to 100% deposit in order to save bank handling charge.
A: A pre-bulk sample check can solve this problem to the largest extent. We will arrange production according to the pre-bulk sample quality standard after your confirmation of the samples.
A: We are not only a trading company but also a manufacturer. Our factory mainly focuses on mold design and quality inspection. Our bulk production may come from the factories we have worked with for a long time, and they are all ISO9001 certified. Through this cooperation model, we can not only ensure product quality and service, but also satisfy the diversified product needs of customers, and the price is more advantageous.
A: Yes,we are very glad to offer you samples.
However the express courier cost from our company to your required address will be upon your account.
Usually we use DHL, UPS, FEDEX or EMS as the courier.
It will take 3-7 days to arrive many Europe countries and North America.
Which express courier we will use, it’s up to your convenient or the express charge.
A: No,just part of our capable categories have been showed in our site.
If you are looking for relative industrial products, please feel free to contact us.
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