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Item #:
203350972
M3-0.5 x 45mm Flat Head Hex Socket Cap Screws Countersunk Bolts, 10.9 Grade Alloy Steel, Black Oxide Finish, Allen Hex Drive, Metric Machine Fully
85% of respondents would recommend this to a friend
Item #:
203350972
SLE 377
Price Details
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*All items will import from US
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Imported from USA store
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Order now and get it around Wednesday, September 23
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What Stands Out
High Grade Strength
Made from 10.9 grade alloy steel, these screws offer superior tensile strength and durability, making them ideal for heavy-duty applications.
Countersunk Design
The flat head design allows for a flush finish, perfect for sleek installations while preventing snagging and enhancing aesthetic quality in projects.
Value Pack Quantity
With 100 pieces included, this bulk pack provides excellent value, ensuring you have enough screws for multiple projects and reducing the need for frequent repurchases.
Product Details
| Thread Size | m3-0.5 |
| Thread Coverage | Fully Threaded |
| Size Name | M3-0.5 x 45mm(50PCS) |
| Brand | NIULUNBAO |
| Color | Black |
| Unit Count | 1 Count |
| Manufacturer | NIULUNBAO |
| Part Number | NLBPTHNLJM34550 |
| Screw Head Style | Flat |
| Thread Style | Right Hand |
| Drive System | External Hex |
| Grade Rating | Grade 10.9 |
| Material Type | Alloy Steel |
| Exterior Finish | Black Oxide |
| Material | Alloy Steel |
| Head Style | Flat |
| Item Weight | 1.5 lbs (680 grams) |
Who Should Buy?
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DIY Enthusiasts
Perfect for home improvement projects requiring strong, durable screws in various materials and applications.
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Machinery Assembly
Ideal for assembling machinery or equipment where secure fastening is crucial for safety and performance.
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Automotive Repairs
Suitable for automotive applications requiring reliable fastening solutions, ensuring parts are held securely in place.
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Plastic Applications
Not the best choice for fastening plastic components, as the screws may cause cracking or damage.
Product Description
M3-0.5 x 45mm Flat Head Hex Socket Cap Screws Countersunk Bolts, 10.9 Grade Alloy Steel, Black Oxide Finish, Allen Hex Drive, Metric Machine Fully Threaded, 50PCS
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What are M3-0.5 x 45mm flat head hex socket cap screws used for?
Answer: M3-0.5 x 45mm flat head hex socket cap screws are commonly used in various mechanical and engineering applications. Their design allows for a flush surface post-installation, making them ideal for assembling parts where aesthetics and space-saving are crucial, such as in machinery frames, electronic devices, and automotive components. The socket head allows for easy installation with an Allen wrench, enhancing accessibility in tight spaces. -
Question:
What is the significance of the 10.9 grade rating for these screws?
Answer: The 10.9 grade rating signifies that these screws are made from high-strength alloy steel, capable of withstanding significant tension and shear forces. This makes them suitable for demanding applications where reliability and performance are essential, such as in automotive or aerospace engineering. Using high-grade fasteners helps ensure safety and longevity in critical assemblies. -
Question:
What is the advantage of the black oxide finish on these screws?
Answer: The black oxide finish not only enhances the aesthetic appeal of M3-0.5 x 45mm screws but also provides some degree of corrosion resistance and minimizes light reflection. This makes them particularly useful in applications where visual appearance or reduced glare is important, such as in consumer electronics or luxury items. Additionally, the finish can help reduce friction during installation. -
Question:
Can I use these screws in outdoor applications?
Answer: While the black oxide finish provides some level of corrosion resistance, it is not fully waterproof. For outdoor applications, it's advisable to consider additional protective coatings or use screws specifically designed for corrosion resistance, such as stainless steel options. However, if used in low-moisture environments, the M3-0.5 x 45mm screws can perform adequately. -
Question:
Are these screws suitable for 3D printing projects?
Answer: Yes, M3-0.5 x 45mm flat head hex socket cap screws are an excellent choice for securing components in 3D printed projects. They provide a strong mechanical bond, ideal for printer assemblies, mountings, and structural supports. Their lower profile also suits various design preferences in 3D printed models, making them a popular fastener choice among hobbyists and engineers. -
Question:
What tools do I need to install these screws?
Answer: To install M3-0.5 x 45mm flat head hex socket cap screws, you will require an Allen wrench or hex key that matches the size of the socket in the screw head. Using the correct tool ensures a tight fit and reduces the risk of stripping the screw head during installation. Appropriate torque settings should be followed to avoid damaging both the screw and the assembled materials. -
Question:
What makes these screws different from regular screws?
Answer: These screws are specifically designed with a flat head and hex socket, which allows for a more secure fit and customized torque during installation. Unlike standard screws with slotted or Phillips heads, the hex socket provides better grip and minimizes slippage. This design feature is beneficial in applications requiring high tightness and stability, such as automotive assembly and industrial machinery. -
Question:
What is the load-bearing capacity of these screws?
Answer: The load-bearing capacity of M3-0.5 x 45mm flat head hex socket cap screws largely depends on the material being fastened, as well as the way they are installed. Generally, 10.9 grade screws can handle significant loads—usually in the range of hundreds to thousands of pounds of tensile strength. It's essential to consult technical specifications or use strength calculation methods for safety-critical applications. -
Question:
Where can I buy M3-0.5 x 45mm Flat Head Hex Socket Cap Screws Countersunk Bolts, 10.9 Grade Alloy Steel, Black Oxide Finish, Allen Hex Drive, Metric Machine Fully?
Answer: You can buy M3-0.5 x 45mm flat head hex socket cap screws at Ubuy in Sierra Leone. Ubuy offers a wide selection of fasteners and ensures that you get high-quality products for your projects. Their platform is designed for easy browsing and purchasing, making it a convenient choice for both professionals and DIY enthusiasts.
NIULUNBAO Socket Head Screws Editorial Review
M3-0.5 x 35mm Flat Head Hex Socket Cap Screws are made from high-grade 10.9 alloy steel with a black oxide finish, perfect for various projects requiring durable and reliable fastening. Users highlight the precise 35mm length ideal for tasks like mounting RMR optics on Tisas PX9 pistols, showcasing the utility of these fully threaded screws. Although there are some concerns about the softness of the material leading to stripped heads, many buyers appreciate their functionality and value, making them a common choice for metric machine fastening needs. The Allen Hex drive system ensures efficient installation, contributing to a smooth user experience.
Customer Reviews & Ratings
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Pros
- Durable 10.9 grade alloy steel construction
- Fully threaded design enhances grip
- Perfect for mounting optics and accessories
- Precise length suitable for various applications
- Black oxide finish offers corrosion resistance
Cons
- Some users report stripping under torque limits
Platform Trust & Buyer Confidence
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Jasmin
Verified buyer
“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
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“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”
10 September 2026 · via Trustpilot
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“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”
10 September 2026 · via Trustpilot
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Opaleye
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“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
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Adele
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“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
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SLE 377
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Features & Benefits
- Made from high-quality 10.9 grade alloy steel.
- Surface treated with black oxide for enhanced corrosion resistance.
- Perfectly suited for engineering, automotive assembly, and precision machinery.
- Includes 50 durable flat head hex socket cap screws (M3 x 45mm).
- Warranty covers damages or losses during transportation with guaranteed refunds.
- Compact size catering to various applications while ensuring safety.
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