Skip to main content

M4 x 8mm 80 Pcs Flat Head Socket Cap Screws, Countersunk Bolts, DIN 7991, 304 Stainless Steel, Fully Threaded, Bright Finish, Allen Hex Drive, Includes Hex Wrench, for Furniture, DIY, 3D Printing

Brand: HirtuOtter
  • Premium 304 Stainless Steel Construction: Our flat head socket cap screws are made from high-quality 18-8 stainless steel, offering excellent rust and corrosion resistance. They are suitable for both indoor and outdoor use and are designed to maintain their strength and performance even when exposed to moisture or harsh weather conditions. Please note that the magnetic properties of 304 steel always show weak magnetic properties due to the structure transformation reasons. This will not affect its high rust resistance, feel confident choosing this.
  • Versatile & Fully Threaded: 80 PCS, M4 x 18mm with fully threaded shafts for secure fastening. They are ideal for a wide range of applications, including furniture assembly, DIY projects, automotive repairs, and construction. Detailed product dimensions(tooth pitch, head diameter, etc) are available in our size chart for your reference.
  • Precision Countersunk Design: The flat head countersunk design ensures a flush, smooth finish when installed. This makes them suitable for woodworking, metalworking, and other applications where a clean finish is required. The screws are designed to integrate seamlessly with your projects for a neat, professional appearance.
  • Smooth, Burr-Free Threads: These screws are designed with smooth, burr-free threads, making them easy to install without damaging surrounding materials.
  • Convenient Set & Customer Support: The set includes all screws and a hex wrench, all packaged in a reusable case for easy storage and access. Our customer support team is available to assist you with any questions or concerns.
Brand: HirtuOtter
Size: M4 x 8mm-80 PCS
Color: Silver
Manufacturer: HirtuOtter
Part Number: KY55XL1
Material Type: Stainless Steel
Isin: IA9BP290Z6F0

$18.22

  • Free shipping in US
  • Shipping: $6.5 Standard Shipping (5-10 Business Days)
  • Arrives:

  • Free 30-Day returns

In Stock

Sold by , Fulfilled by IBSPOT
Ships from USA

IBspot Buyer Protection

Shop confidently on IBspot, receive your item as described or your money back for eligible orders. Learn Program Terms

supported payment methods:Visa, Mastercard, Discover, Amex, Apple Pay, Google Pay

GUARANTEED SAFE CHECKOUT

More seller options

Starting from

Compare all sellers
  • MONEY BACK GUARANTEE

    30 days money back guarantee, no additional fee charged.

  • EXCELLENT SUPPORT

    We provide 24/7 online customer support via email.

  • Fast Shipping

    One week domestic shipping. Global delivery to the US in 2 weeks.

scroll to top arrow
M4 x 8mm 80 Pcs Flat Head Socket Cap Screws, Countersunk Bolts, DIN 7991, 304 Stainless Steel, Fully Threaded, Bright Finish, Allen Hex Drive, Includes Hex Wrench, for Furniture, DIY, 3D Printing

M4 x 8mm 80 Pcs Flat Head Socket Cap Screws, Countersunk Bolts, DIN 7991, 304...

$18.22

HirtuOtter Flat Head Socket Cap Screws(Countersunk) – 304 Stainless Steel with Bright Finish

Enhance your projects with HirtuOtter’s flat head socket cap screws. 

Made from premium 304 stainless steel, these screws offer excellent rust and corrosion resistance, making them suitable for both indoor and outdoor applications.



Key Features:

  • - High-Quality 304 Stainless Steel: Built to last, these screws are made from durable 18-8 (304) stainless steel, offering superior strength and long-lasting corrosion resistance. The bright finish maintains its professional appearance and ensures integrity in harsh environments.
  • - Precision Countersunk Design: The flat head, countersunk design allows for a flush and smooth finish when installed, making them ideal for projects requiring an aesthetically clean, professional look, such as woodworking and metalworking.
  • - Versatile Applications: These screws are Ideal for a variety of applications including DIY projects, home repairs, furniture assembly, automotive work, and securing electronics. Ideal for binding wood, metal, and plastic, they are especially effective for outdoor furniture, bicycles, and other exposed environments.
  • - Easy Installation: The smooth, burr-free threads provide a secure fit with minimal effort. The included Allen hex wrench ensures fast, easy installation, providing a strong connection with no hassle.
  • - Value Set & Customer Support: This set includes all screws and one Allen wrench, all neatly stored in a durable case for easy organization and protection from moisture. HirtuOtter is dedicated to customer satisfaction and offers 24/7 support to resolve any inquiries or concerns.



Why Choose HirtuOtter?

HirtuOtter delivers high-quality products built to last. Our stainless steel screws are designed for high performance, ensuring reliable, long-lasting results for all your projects. With a focus on customer satisfaction, we provide exceptional support to ensure a smooth and hassle-free experience.



Usage Tips:

- Use the included Allen wrench or a compatible hex driver for installation. Avoid over-tightening to prevent damage.

- Store screws in a dry environment to maintain their rust-free performance. The included case helps protect the screws from moisture and corrosion.


Q&A:

Q1: What are the advantages of the countersunk design on these screws?

A1: The screws feature a countersunk flat head design, ensuring that the screw sits flush with the surface when installed. This creates a smooth, professional finish without any protruding parts. The countersunk design is ideal for applications where aesthetics are important, such as furniture assembly and decorative projects.


Q2: What materials are these screws suitable for?

A2: These countersunk screws are Ideal for a wide range of materials, including wood, metal, and plastic. They are commonly used in furniture assembly, home repairs, automotive work, and electronic device repairs, providing a secure connection across various surfaces.


Q3: Are these screws corrosion-resistant?

A3: Yes, these screws are made from high-quality 304 stainless steel, which offers excellent corrosion resistance. Whether exposed to rain, moisture, or saltwater, these screws maintain their strength and appearance, making them ideal for both indoor and outdoor applications.


Q4: How many screws are included in the package?

A4: Each package includes all countersunk screws, along with a Allen hex wrench. The screws are neatly organized in a durable case for easy storage and access.


Q5: How can I contact customer support if I have any issues?

A5: We are committed to providing excellent customer service. If you have any questions or need assistance, feel free to contact us. Our customer support team is available 24/7 and will ensure that your inquiry is addressed within 24 hours.

 

Processing Time

  • We process and ship orders Monday through Friday, excluding holidays.
  • Most orders are processed within 1–3 business days, depending on product availability.
  • Processing time does not include delivery time, which varies based on your location and the product’s shipping origin.

Shipping Coverage

We currently ship to addresses within the United States only.

Products may ship from:

  • Our U.S. warehouses, or
  • Our international fulfillment centers (including Korea, Japan, China, Australia, Mexico, Canada, the United Kingdom, and the EU).

Each product page clearly displays the “Ships From” location before checkout.


Shipping Methods & Estimated Delivery

 

Shipping Method Estimated Delivery Cost
Free Shipping (US) 5–10 business days Free, available on eligible items
Standard Shipping (US to US by Item) 5–10 business days $6.50 for the first item, $2.00 each additional
Standard Shipping (From US Warehouse by Weight) 3–7 business days Starts at $6.50, increasing by $2 for every additional 4 oz (0.25 lb) up to 1 lb, then by $4 for each additional pound beyond 1 lb.
Extended Delivery (Ships from Overseas Warehouse) 10–20 business days $14.50 for the first item, $2.00 each additional

Shipping costs vary by product weight, quantity and origin. Exact rates and delivery estimates are displayed on each product page and confirmed during checkout.

Free Shipping

We offer free standard shipping on select products or during promotional periods. Availability of free shipping will be displayed on the product page and at checkout. 


Carriers

We primarily use USPS and UPS for U.S. deliveries. Items shipped from international warehouses may be handled by partner carriers depending on the country of origin.


Import Duties & Taxes

All import duties and taxes for goods imported into the United States are included in the product price. There are no hidden fees or additional charges at checkout.


Tracking & Notifications

Every order is fully trackable. You will receive a tracking number via email once your order ships. If your order ships in multiple packages, each package will have its own tracking number. If you don’t receive a shipping confirmation immediately, your order is still being processed and will arrive within the estimated timeframe shown at checkout.

You can track your shipment anytime using the Track Your Order page on our website.


Order Changes & Cancellations

If you need to modify or cancel an order, please contact our customer support team as soon as possible. Orders can only be canceled before they ship. Once shipped, cancellations are not possible, but you may request a return after the item is delivered.

Contact: support@ibspot.com


Item Not Received

If your tracking number shows “Delivered” but you haven’t received your package:

  1. Check with your local USPS or UPS office.
  2. Confirm that the shipping address provided was correct.
  3. If the issue remains unresolved, contact support@ibspot.com for assistance.

Damaged or Lost Parcels

If your package arrives damaged or fails to arrive, please contact us immediately. For deliveries to P.O. boxes, ibspot is not responsible for damage caused by weather, temperature, or theft.


Customer Support

For any questions about shipping, tracking, or delivery, our customer support team is here to help.

Email: support@ibspot.com

We’re always happy to help.

Please read our policy carefully before making a purchase.
We aim to ensure every customer has a smooth and transparent experience with ibspot.com.


Order Cancellation Policy

Customers may request to cancel an order before it has been shipped.
Once the package has been shipped, cancellations are no longer possible; however, you may still request a return after receiving your order.

How to Request a Cancellation

You can contact us through:

Please submit your cancellation request as soon as possible after placing the order to allow us to process it before shipment.


Return Policy

We accept returns for most items within 30 days of delivery for a full refund.

To be eligible for a return:

  • The item must be unused, in the same condition as received, and in its original packaging.
  • A tracking number must be provided to confirm the return shipment.

Non-Returnable Items

Certain products cannot be returned, including:

  • Perishable goods (for example, food, flowers, newspapers, magazines)
  • Intimate or sanitary goods
  • Hazardous materials or flammable liquids/gases
  • Gift cards
  • Downloadable software
  • Some health and personal care items

Partial Refunds (If Applicable)

Partial refunds may be granted in specific situations, such as:

  • Books with obvious signs of use
  • Opened CDs, DVDs, software, or vinyl records
  • Items not in their original condition, damaged, or missing parts not due to our error
  • Items returned more than 30 days after delivery

How to Return an Item

To initiate a return, please contact us at support@ibspot.com with your order number and details about the product you wish to return.
Our team will provide you with return instructions and a prepaid return label.


Shipping Cost for Returns

Please contact us before returning any item.
We will provide a free return shipping label.

If a return is sent back without prior contact or without our provided label, we cannot be held responsible for return shipping costs.

For items valued over $75, we recommend using a trackable shipping service or purchasing shipping insurance.
We cannot guarantee that we will receive your returned item if shipped independently.


Refund Processing

Once your return is received and inspected:

  • In-store returns are refunded to the original form of payment or issued as a gift card.
  • Mail-in returns using our prepaid label are refunded to the original payment method within 3–5 business days after we receive your return.

Please allow:

  • 5–7 business days for the return to reach our Returns Center.
  • An additional 3–10 business days for your bank to post the refund to your account.

Damages, Issues & Claims

Please inspect your order immediately upon receipt.
If you receive a defective, damaged, or incorrect item, contact us right away at support@ibspot.com.
We’ll evaluate the issue promptly and make it right.

Product Claims

Before purchasing, please review product details carefully.
If there is a problem with your order upon arrival, visit our Support Center or contact us directly to arrange return shipping or replacement.


Exchanges

We do not process direct exchanges.
The fastest way to get what you need is to return the original item and place a new order once your return is accepted.


Return Address

IBSPOT Return Center
15 Sawmill Ln
Dover Plains, NY 12522
United States


Customer Support

Our support team is available 24/7 to assist with cancellations, returns, or general inquiries.

Email: support@ibspot.com
Contact Form: Contact Us page

Oops!

Sorry, it looks like some products are not available in selected quantity.

OK

Subscribe To Our Newsletter

Disclaimer: Statements made, or products sold through this website, have not been evaluated by the United States Food and Drug Administration. Products are not intended to diagnose, treat, cure or prevent any disease.