What sizes are in this 100-piece screw set?

The assortment spans M2, M2.5, M3, M4, M5, M6, and M8, all fully threaded. The exact count per size isn't fixed, with smaller sizes usually included in larger numbers. It's an assorted box, so it's handy for general repair and assembly stock.

How strong is Grade 12.9 alloy steel?

Grade 12.9 is the top strength class for these socket cap screws, hardened to roughly 39 to 44 HRC. That makes them suited to high-stress, high-torque joints. The hex socket drive lets you really crank them down in tight spots.

Will the black oxide finish stop rust?

Black oxide cuts glare and gives some corrosion resistance, but it's a light coating, not heavy rustproofing. For damp or outdoor use, add oil or keep them dry. Indoors and in machinery, they hold up well.

M2-M8 Hex Socket Cap Screws | Grade 12.9 Alloy Steel | 100-Piece Black DIN912 Bolts

Name: M2-M8 Hex Socket Cap Screws | Grade 12.9 Alloy Steel | 100-Piece Black DIN912 Bolts
Brand: Compel
SKU: FAST-00084
Price: 5.95 USD
Availability: InStock

Stock #:TBS-05611

SKU:FAST-00084

M2-M8 Hex Socket Cap Screws | Grade 12.9 Alloy Steel | 100-Piece Black DIN912 Bolts - Image 1

$5.95

Ships to United States · standard est. 10-20 business days

Free standard shipping on orders over $59 (under 2kg). Express available at checkout.

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M2-M8 Hex Socket Cap Screws | Grade 12.9 Alloy Steel | 100-Piece Black DIN912 Bolts

$5.95

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Questions about this product

What sizes are in this 100-piece screw set?: The assortment spans M2, M2.5, M3, M4, M5, M6, and M8, all fully threaded. The exact count per size isn't fixed, with smaller sizes usually included in larger numbers. It's an assorted box, so it's handy for general repair and assembly stock.
How strong is Grade 12.9 alloy steel?: Grade 12.9 is the top strength class for these socket cap screws, hardened to roughly 39 to 44 HRC. That makes them suited to high-stress, high-torque joints. The hex socket drive lets you really crank them down in tight spots.
Will the black oxide finish stop rust?: Black oxide cuts glare and gives some corrosion resistance, but it's a light coating, not heavy rustproofing. For damp or outdoor use, add oil or keep them dry. Indoors and in machinery, they hold up well.

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Assortment of black alloy steel hex socket cap head screws in various metric sizes (M2 to M8), Grade 12.9, with DIN912 specification.

M2-M8 Hex Socket Cap Screws | Grade 12.9 Alloy Steel | 100-Piece Black DIN912 Bolts

Price$5.95

Rating4.8

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This premium assortment of high-strength alloy steel socket cap screws offers exceptional durability and precision fastening. Featuring a Grade 12.9 rating and black oxide finish, these DIN912-compliant bolts provide superior tensile strength and corrosion resistance for demanding mechanical applications. Features and Benefits - Grade 12.9 Alloy Steel Construction - Delivers the highest tensile strength for critical, high-stress applications requiring maximum reliability. - Black Oxide Surface Finish - Provides a durable, corrosion-resistant layer that also reduces light reflection and minimizes galling. - Hex Socket (Allen) Drive Design - Enables high-torque installation in confined spaces with a clean, flush finish for streamlined assemblies. - DIN912 Standard Compliance - Guarantees precise dimensional accuracy and consistent quality for professional engineering and manufacturing projects. Applications - Precision machinery assembly and maintenance - Automotive engine and transmission components - Heavy-duty industrial equipment and jigs - High-performance bicycle and motorcycle frames

Sizes: M2, M2.5, M3, M4, M5, M6, M8. Material: Alloy Steel. Drive Type: Hex Socket (Allen). Finish: Black. Grade: 12.9. Head Type: Socket Cap. Package Type: Assorted set. Product Type: Hex Socket Cap Head Screw. Quantity: 100 pieces. Standard: DIN 912. Thread Length: Full thread. Thread Type: Metric. Quantity per Size: 100/50/20/10 pieces (distribution unspecified). Thread Sizes: M2, M2.5, M3, M4, M5, M6, M8. Material: Alloy Steel. Temperature Range: -50°C to +250°C (coating dependent). Standard: DIN 912. Corrosion Resistance: Low (requires protective coating). Drive Type: Internal Hex (Allen). Finish/Coating: Black. Grade/Class: 12.9. Hardness: 39-44 HRC. Head Type: Hex Socket Cap Head (Allen). Proof Load: Approx. 90% of tensile strength. Tensile Strength (min): 1220 MPa. Thread Type: Metric coarse (standard). Yield Strength (min): 1080 MPa. Q: What are the specifications of these socket cap head screws? A: These are Allen hex socket cap head screws (DIN912) made from Grade 12.9 alloy steel. They are available in sizes M2, M2.5, M3, M4, M5, M6, and M8, with quantities ranging from 10 to 100 pieces per size, and feature a black finish.. Q: How is the quality and strength of the Grade 12.9 alloy steel? A: Grade 12.9 alloy steel is a high-strength material, offering excellent tensile strength and durability. These screws are suitable for high-stress applications where reliable fastening is required.. Q: Are these screws compatible with standard Allen/hex keys? A: Yes, these socket cap head screws are designed to be used with standard Allen/hex keys corresponding to their size. The internal hex socket conforms to the DIN912 standard for compatibility.. Q: Is there any warranty or guarantee provided with these screws? A: Warranty details are typically provided by the seller or retailer. It is recommended to check the specific product listing or contact the seller directly for information on any warranty coverage.. Q: Do these screws offer good value for the price? A: Given the high-grade material, variety of sizes, and quantity options, these screws provide good value for professionals and DIY users needing reliable, high-strength fasteners for demanding applications..

M2-M8 Hex Socket Cap Screws | Grade 12.9 Alloy Steel | 100-Piece Black DIN912 Bolts

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