Stainless Steel A4-70 Hex Nylon Nut with Passivation
1> Description: Stainless Steel A4-70 Hex Nylon Nut with Passivation
2> Material: Stainless Steel 316
3> Surface Treatment: Passivated
4> Size Range: M5 (3/16") to M24 (1")
5> Mechanical Properties: A4-70
6> Packing: Bulk packing, box packing, and palletized upon customer 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), and more. 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 makes them easy to install, while coarse threads are better suited for brittle materials and allow faster assembly and disassembly. These nuts provide long-lasting performance for any project. If you're interested in our products, feel free to contact us — we'll provide the best price once we receive your inquiry.
Q&A
Who is Lockey?
Lockey is a fastener manufacturer established in 1973. Dragon Iron Group focuses on the production and sale 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 located in Jingjiang City, making it easy for us to export our products.
What does Lockey do?
As a fastener manufacturer, we mainly produce, but are not limited to:
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 offer 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.
Why choose Lockey?
Lockey never stops innovating. Innovation is the driving force behind our development. We focus on both technological and conceptual innovation to keep moving forward. We have gathered a team of professionals skilled in management and cooperation. Contacting them will give you satisfying results.
We are glad you chose Lockey as your supplier, but we are more than just a supplier — we are your partner. We don't just sell, we share. Share new information about fasteners, price trends, and even profit. We are friends. We care about your sales, your success, and the quality of the products you use.
What measures does Lockey take to ensure quality?
With over 40 years of experience in fastener manufacturing and an ISO 9001 certificate, we address challenges and solve problems effectively. We have established a quality assurance system based on ISO 9001, considering all factors that may affect quality. 80% of our staff are skilled workers with over five years of experience. Employees attend training classes on and off the job for weeks to ensure they know how to prevent and handle issues.
Does Lockey produce non-standard items?
Yes, we do. Send your specifications to our sales representative, and we will provide a quotation.
Do you have a published price list?
No, we do not. Market conditions fluctuate, making it difficult to maintain a standard pricing structure. Our sales team is flexible in providing quotes based on your requirements, ensuring you get the best price available when needed.
Do you offer discounts?
Of course, we can offer discounts based on large orders. However, we believe our sales team has already provided the best possible price. You may receive a small discount, but not a significant one. Feel free to explore further.
Do you provide samples?
Yes, stored samples are completely free. However, we do not have a budget for express shipping.
What is the delivery time?
It depends on the order quantity. Standard items usually take 20–40 days, while non-standard ones take 35–60 days. Please consult with 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 shipping 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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