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Carbon Steel Black Oxide Shoulder Screw Bolt - China Manufacturer

Purchased by engineers and buyers, I supply the Carbon Steel Black Oxide shoulder Screw Bolt with consistent tolerances and rugged finish. As a China Manufacturer, I understand you need reliable fasteners for automation and machinery. Our Carbon Steel Black Oxide shoulder Screw Bolt features a hardened shoulder for precise positioning, a corrosion resistant black oxide coating, and a high-shear load capacity. It's ideal for jigs, fixtures, and guiding applications where repeatability matters. I keep tight tolerances on thread length and head height to ensure compatibility with standard instrumentations. Available in common metric and imperial sizes, I can offer custom lengths and shoulder diameters to meet your design. Our service includes fast samples, competitive pricing, and on-time delivery to your factory. Company detail {} is provided to support your procurement records. If you score a durable solution for assembly lines and automation, this bolt is the right pick.

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Carbon Steel Black Oxide shoulder Screw Bolt Exceeds Industry Benchmarks Global Reach

Global buyers seeking reliable fasteners can rely on carbon steel black oxide shoulder screws for precise shoulder alignment and strong bearing surfaces. The engineered shoulder provides accurate spacing in automation fixtures, conveyors, and precision machinery, while the smooth shank minimizes friction and wear. The black oxide finish adds modest corrosion resistance and an understated, durable appearance, helping parts run cooler and longer in demanding environments. Exceeding industry benchmarks, this bolt combines tight tolerances, uniform finish, and robust load performance with scalable production and dependable delivery. Its global reach supports bulk orders across regions, backed by rigorous quality control and traceability. Procurement teams benefit from consistent lead times, package integrity, and compliance with international standards, enabling seamless integration into OEM and aftermarket supply chains worldwide.

{ Carbon Steel Black Oxide Shoulder Screw Bolt Exceeds Industry Benchmarks Global Reach }

Product Code Material Finish Shoulder Ø (mm) Shoulder Length (mm) Head Type Drive Type Thread Tolerance (mm) Tensile Strength (MPa) Hardness (HRC) Standards / Certifications Regions Covered Lead Time (days) Notes
SH-1045-BC-6x25 Carbon Steel 1045 Black Oxide 6 25 Shoulder Screw Hex Socket M6 x 1.0 ±0.05 570 42 ISO 9001; ASTM A29 / AISI 1045 North America, Europe, Asia-Pacific 5 General purpose, consistent alignment for light to medium loads
SH-1045-BC-8x30 Carbon Steel 1045 Black Oxide 8 30 Shoulder Screw Hex Socket M8 x 1.25 ±0.05 590 41 ISO 9001; ASTM A29 / AISI 1045 North America, Europe, Asia-Pacific 6 Enhanced load distribution with improved mating surface
SH-1045-BC-10x40 Carbon Steel 1045 Black Oxide 10 40 Shoulder Screw Hex Socket M10 x 1.5 ±0.05 610 42 ISO 9001; ASTM A29 / AISI 1045 North America, Europe, Asia-Pacific 7 Balanced combination of strength and machinability
SH-1045-BC-12x50 Carbon Steel 1045 Black Oxide 12 50 Shoulder Screw Hex Socket M12 x 1.75 ±0.05 630 43 ISO 9001; ASTM A29 / AISI 1045 North America, Europe, Asia-Pacific, Latin America 8 Higher load-bearing capacity for precision assemblies
SH-1045-BC-16x60 Carbon Steel 1045 Black Oxide 16 60 Shoulder Screw Hex Socket M16 x 2.0 ±0.05 650 43 ISO 9001; RoHS compliant Global: NA, EU, APAC, LATAM, MEA 9 Ideal for medium-to-high torque applications
SH-1045-BC-20x80 Carbon Steel 1045 Black Oxide 20 80 Shoulder Screw Hex Socket M20 x 2.5 ±0.05 665 44 ISO 9001; ASTM A29 / AISI 1045 Global: North America, Europe, Asia-Pacific, Latin America, Middle East 10 Premium option for high-load, accurate alignment in heavy assemblies

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Carbon Steel Black Oxide shoulder Screw Bolt Application Dominates

Data Dimension: Durability Index vs Operating Temperature for Carbon Steel Black Oxide Shoulder Screws

This dataset investigates the relationship between operating temperature and the durability of carbon steel black oxide shoulder screw bolts. The line chart displays a synthetic durability index, ranging from 0 to 100, measured under a consistent load and cycle regime, across a temperature span from 20°C to 120°C. The durability index is a composite proxy that reflects wear resistance, coating integrity, and environmental corrosion performance. The overall trend shows a clear inverse relationship: as temperature rises, the durability index declines, indicating a higher likelihood of wear and coating degradation over time. In the lower temperature range (20–40°C), the durability index remains high (roughly 90–95), suggesting optimal performance with limited wear and robust coating adherence. As temperatures increase into mid-range values (50–80°C), the index gradually falls to around 60–75, which aligns with increased oxidation rates and the potential breakdown of lubricant films that reduce metal-to-metal wear. At high temperatures (90–120°C), the durability index drops sharply to values near 20–40, signaling a substantial reduction in life expectancy due to accelerated wear, potential coating embrittlement, and thermal expansion effects that can compromise fit and preload stability.

While illustrative, these results highlight essential engineering trade-offs: temperature tolerance, coating selection, and mechanical loading jointly influence service life. The model assumes a single durability metric under constant load, lubrication, and humidity, which simplifies the real-world environment where multiple factors interact. For design optimization, it would be valuable to integrate additional dimensions such as load variation, lubrication regime, corrosion exposure, and material finish. The chart serves as a guide for comparing material-coating combinations and identifying operating envelopes that maximize expected life. Future work could incorporate empirical test data, probabilistic safety margins, and multi-factor analyses to provide a more robust decision-support tool for selecting shoulder screw bolts in temperature-sensitive assemblies.

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  • Emma 2022.12.29 18:30:23

    Good quality, reasonable prices, rich variety and perfect after-sales service, it's nice!

  • Fernando 2022.12.26 08:33:11

    The goods are very perfect and the company sales manager is warmful, we will come to this company to purchase next time.

  • Debby 2022.12.16 15:03:26

    It is really lucky to meet such a good supplier, this is our most satisfied cooperation, I think we will work again!

  • Honey 2022.12.12 04:52:56

    We have been appreciated the Chinese manufacturing, this time also did not let us disappoint,good job!

  • Catherine 2022.12.03 09:14:52

    Reasonable price, good attitude of consultation, finally we achieve a win-win situation,a happy cooperation!

  • Marguerite 2022.12.03 02:40:05

    The supplier cooperation attitude is very good, encountered various problems, always willing to cooperate with us, to us as the real God.

  • Cherry 2022.12.30 08:59:47

    The product manager is a very hot and professional person, we have a pleasant conversation, and finally we reached a consensus agreement.

  • Marcia 2022.12.30 01:27:08

    The enterprise has a strong capital and competitive power, product is sufficient, reliable, so we have no worries on cooperating with them.

  • Jodie 2022.12.27 19:54:47

    Product quality is good, quality assurance system is complete, every link can inquire and solve the problem timely!

  • Moira 2022.12.12 20:11:09

    Good quality and fast delivery, it's very nice. Some products have a little bit problem, but the supplier replaced timely, overall, we are satisfied.

  • Melissa 2022.12.12 12:59:17

    The supplier cooperation attitude is very good, encountered various problems, always willing to cooperate with us, to us as the real God.

  • Helen 2022.12.03 19:31:20

    This company can be well to meet our needs on product quantity and delivery time, so we always choose them when we have procurement requirements.

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