Stainless Steel A4-50 Hex Nylon Nut, per DIN 982, Passivated
1. Description: Stainless Steel A4-50 Hex Nylon Nut, designed according to DIN 982 standards, with a passivated surface finish.
2. Material: Made from stainless steel 316, known for its high corrosion resistance and durability.
3. Surface Finish: Passivated to enhance its resistance against rust and oxidation.
4. Size Range: Available in sizes from M5 (3/16") up to M24 (1").
5. Mechanical Properties: Complies with the A4-50 standard, ensuring reliable strength and performance.
6. Packing: Offered in bulk packing or box packing, and can be customized as per customer requirements, then shipped on pallets.
We produce a wide range of nuts, including hex nuts, hex flange nuts, Kep nuts, hex nylon nuts, hex flange nylon nuts, square nuts, coupling nuts, jam nuts, heavy hex nuts, channel nuts (sliding nuts), and more.
Lock nuts are designed to provide a secure hold and reduce slippage. Stainless steel fasteners are ideal for applications where strength and cost-effectiveness are key considerations. The hexagonal drive system ensures ease of installation. Coarse threads are better suited for brittle materials and allow for faster assembly and disassembly compared to fine threads. Ensure long-lasting performance for all your projects.
If you are interested in our products, please don’t hesitate to contact us. We will provide the best price as soon as we receive your inquiry.
Q&A
Who is Lockey?
Lockey is a fastener manufacturer established in 1973. Dragon Iron Group specializes in the production and sales of fasteners, hardware parts, forging, and machine parts for the automotive and other industries. The group's headquarters, Dragon Iron Enterprise, is located in A Lien, Taiwan. Lockey Industrial Co., Ltd. was set up in 2003 in Dongguan City as the foreign sales department of the group. Our plant is based in Jingjiang City, allowing for efficient export of our products.
What does Lockey do?
As a fastener manufacturer, we produce a wide range of products, including but not limited to:
1. Bolts, studs, and thread rods
2. Hex nuts, nylon nuts, and flange locknuts
3. Tapping screws, drilling screws, wood screws, machine screws, and socket cap screws
4. Plain washers, spring washers, and tooth washers
5. Structural applications such as ASTM A325/A490, ASTM F1852/F2280, DIN6914/5/6, and DIN7990
In addition, we also manufacture special fasteners, hardware parts, forging, and machine parts for the automotive industry, serving clients like Toyota and Honda. 70% of our products are exported globally.
Why choose Lockey?
Lockey never stops innovating. Innovation is the driving force behind our development, combining both technological and conceptual advancements to keep us moving forward. We have a team of professionals skilled in management and cooperation. When you reach out to us, you’ll get satisfactory results.
We are not just a supplier, but a partner. We don't only sell products—we share information about fasteners, market trends, and profits. We're friends who care about your success as much as our own, and we value the quality and usability of our products.
How does Lockey ensure quality?
With over 40 years of experience in fastener manufacturing and an ISO 9001 certification, we consistently solve problems and maintain high-quality standards. Our quality assurance system is built upon ISO 9001, with strict criteria for factors that may affect product quality. 80% of our staff are skilled workers with over five years of experience, and they regularly attend training sessions to improve their skills and prevent issues.
Do you produce non-standard items?
Yes, we do. Send your specifications or drawings to our sales representative, and we'll provide a quotation.
Do you have a published price list?
No, we don't. Market conditions change frequently, making it difficult to maintain a fixed pricing structure. Our sales team is flexible when providing quotes, so you always get the best price available at the time of your request.
Do you offer discounts?
Of course, we offer discounts based on large quantities. However, our sales team already provides the best possible price. While you may get a small discount, we believe our pricing is competitive and fair.
Do you provide samples?
Yes, we do. Stored samples are free of charge. However, we don’t have a budget for express shipping.
What is the delivery time?
It depends on the order quantity. Standard items typically take 20–40 days, while non-standard items may take 35–60 days. Please consult with your sales representative for an accurate shipping date.
What is the payment term?
T/T and L/C are preferred payment methods. Western Union is also accepted for low-value payments, such as sample express fees.
Technical Delivery Conditions | ||
Material | Steel | |
General Requirements | As specified in DIN 267 part 1 & 15 | |
Thread | Tolerance | 6H |
Standard | DIN13 Part 12 & 15 | |
Mechanical Properties | Property Class | ≤M39: 5, 6, 8 or 10; >39: by agreement |
Standard | ISO 267 Part 4 | |
Limit Deviations Geometrical Tolerance | Product Grade | A for product up to size M24 and L≤10d or 150mm; B for product exceeding size M24 or L>10d or 150mm |
Standard | ISO 4759 Part 1 | |
Surface Finish | As processed | |
DIN267 Part 2 shall apply regarding surface roughness | ||
DIN267 Part 20 shall apply regarding permissible surface discontinuities | ||
DIN267 Part 21 shall apply regarding the widening test | ||
DIN267 Part 9 shall apply regarding electroplating | ||
DIN267 Part 10 shall apply regarding hot dip galvanizing | ||
Acceptance Inspection | DIN267 Part 5 shall apply regarding acceptance inspection |
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