Stainless Steel A4-50 Hex Nylon Nut, per DIN982, Passivate
1. Description: Stainless Steel A4-50 Hex Nylon Nut, per DIN982, Passivate
2. Material: Stainless Steel 316
3. Surface: Passivated
4. Size: M5 (3/16") to M24 (1")
5. Mechanical Properties: A4-50
6. Packing: Bulk packing, box packing, and palletized as per customer's request
We produce a wide range of nuts including Hex Nut, Hex Flange Nut, Kep Nut, Hex Nylon Nut, Hex Flange Nylon Nut, Square Nut, Coupling Nut, Hex Jam Nut, Hex Heavy Nut, Channel Nut (Sliding Nut), etc.
Lock Nuts ensure a secure hold and reduce slippage. Stainless Steel fasteners are ideal for applications where strength and cost-effectiveness are key factors. The hexagonal head design allows for easy installation and removal. Coarse threads are particularly suitable for brittle materials and offer faster assembly and disassembly compared to fine threads.
If you're interested in our products, please don't hesitate to contact us. We'll provide the best price possible once we receive your details.
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 has its headquarters 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 located in Jingjiang City, which makes it easier for us to export our products.
What does Lockey do?
As a fastener manufacturer, we mainly produce the following:
1. Bolts, studs, and thread rods
2. Hex nuts, nylon nuts, flange locknuts
3. Tapping screws, drilling screws, wood screws, machine screws, socket cap screws
4. Plain washers, spring washers, tooth washers
5. Structural applications, ASTM A325/A490, ASTM F1852/F2280, DIN6914/5/6, DIN7990
In addition, we also manufacture special fasteners, hardware parts, forging, and machine parts for the automotive industry. We supply parts for Toyota, Honda, and others. 70% of our products are exported worldwide.
Why choose Lockey?
Lockey never stops innovating. Innovation is the driving force behind our growth. We focus on both technological and conceptual innovation to keep moving forward. We have a team of experienced professionals who are skilled in management and collaboration. When you reach out to us, you will get excellent results.
We are not just a supplier; we are a partner. We don’t only sell products—we share information about fasteners, market trends, and even profit. We consider ourselves friends, caring not only about our own success but also yours and the quality of your usage.
How does Lockey ensure quality?
With over 40 years of experience in fastener manufacturing and ISO9001 certification, we continuously address challenges and find solutions. We have a comprehensive quality assurance system based on ISO9001, developed over decades of experience. 80% of our staff are skilled workers with more than five years of experience. Employees undergo regular training to prevent and handle any issues effectively.
Do you produce non-standard items?
Yes, we do. Please send your specification drawings to our sales representative, and we’ll provide you with a quotation.
Do you have a published price list?
No, we don’t. Market conditions are always changing, making standard pricing difficult. Our sales team is flexible when it comes to providing quotes, so you can get the best available price when you need it.
Do you offer discounts?
Of course. We can offer discounts based on large quantities. However, we believe our sales team already offers the best price available. You may get a small discount, but not a huge one. Feel free to explore further.
Do you provide samples?
Yes, we do. Stored samples are completely free. However, we don’t have a budget for express shipping.
What is the delivery time?
It depends on the order quantity. Standard items take around 20–40 days, while non-standard ones take 35–60 days. Contact your sales representative for an accurate shipment date.
What is the payment term?
T/T and L/C are preferred. Western Union is also acceptable 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 with regard to surface roughness | ||
| DIN267 Part 20 shall apply with regard to permissible surface discontinuities | ||
| DIN267 Part 21 shall apply with regard to the widening test | ||
| DIN267 Part 9 shall apply with regard to electroplating | ||
| DIN267 Part 10 shall apply with regard to hot dip galvanizing | ||
| Acceptance inspection | DIN267 Part 5 shall apply with regard to acceptance inspection | |
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