Stainless Steel A4-70 Hex Nylon Nut per ASME B18.16.6, Passivated
1. Description: Stainless Steel A4-70 Hex Nylon Nut, as per ASME B18.16.6, with a passivated surface finish
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 or box packing, as per customer request, then palletized
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 provide a secure hold and help reduce slippage. Stainless Steel fasteners are ideal for applications where strength and cost-effectiveness are key considerations. The hexagonal head design ensures easy installation and removal. Coarse threads are recommended for brittle materials and allow for faster assembly and disassembly compared to fine threads. These nuts ensure a long-lasting grip for any project.
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.
| 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 |
**Q&A**
**Who is Lockey?**
Lockey is a fastener manufacturer established in 1973. Dragon Iron Group focuses on the production and sales of fasteners, hardware parts, forging, and machined components 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 do Lockey produce?**
As a fastener manufacturer, we mainly produce, but are not limited to:
1. Bolts, studs, and threaded 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, ASTM A325/A490, ASTM F1852/F2280, DIN 6914/5/6, DIN 7990, etc.
In addition, we also offer special fasteners, hardware parts, forging, and machined components for the automotive industry. We supply parts for Toyota, Honda, and others. 70% of our products are exported globally.
**Why choose Lockey?**
Lockey never stops innovating. Innovation is the driving force behind our development, both in technology and concept. We have a team of professionals who excel in management and cooperation. When you reach out to us, you’ll get excellent results.
We’re not just a supplier—we’re a partner. We don’t just sell products; we share knowledge, market trends, and even profit. We care about your success and the quality of the products you use.
**How does Lockey ensure quality?**
With over 40 years of experience in fastener manufacturing and ISO 9001 certification, we have developed a robust quality assurance system. 80% of our staff are skilled workers with more than five years of experience. Employees undergo regular training to prevent and address issues effectively. This ensures consistent quality across all our products.
**Do you produce non-standard items?**
Yes, we do. Please 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 fluctuate, making it difficult to maintain standard pricing. Our sales team is flexible and can provide competitive pricing tailored to your needs.
**Do you offer discounts?**
Yes, we offer discounts based on order quantity. However, our sales team always aims to provide the best possible price. While discounts may be available, they are usually modest.
**Do you provide samples?**
Yes, we offer free samples if they are in stock. However, we don’t cover express shipping costs.
**What is the delivery time?**
Delivery time depends on the order quantity. Standard items take approximately 20–40 days, while non-standard items may take 35–60 days. Contact your sales representative for an accurate shipment date.
**What are the payment terms?**
Preferred payment methods are T/T and L/C. Western Union is also acceptable for low-value payments such as sample shipping fees.
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