Custom M3 x 55mm Bolt Hex Socket Head Screw Black for Factories

I offer the M3 x 55mm Bolt Hex Socket Head Screw Black for precise assemblies in electronics, robotics, and automotive fixtures. I work directly with factories, so I can meet tight schedules and maintain consistent quality. If you need {Custom} ,{Factories} orders, I can tailor coating, thread tolerance, and packaging to your spec. The hex socket head ensures secure torque in compact spaces, while the black finish adds corrosion resistance and a clean look for exposed assemblies. I provide traceable data, batch testing, and on-time delivery to support your production line. Whether you need small runs or long-term supply, this fastener offers reliability and cost efficiency. I keep stock and offer samples to confirm fit before mass production. Partner with me for a practical, scalable solution that keeps your build moving.

Hot Selling Product

M3 x 55mm Bolt Hex Socket Head Screw Black Industry Leaders Guarantees Peak Performance

Designed for precision assemblies, the M3 x 55mm hex socket head screw with a black oxide finish delivers reliable clamping in compact electronics housings, robotics joints, and control panels. With an M3 thread and 55 mm length, it provides stable torque in tight spaces, while the hex socket head accepts common drivers for secure, repeatable assembly. The black finish adds wear resistance and reduced reflectivity for sensitive equipment. Global procurement teams value consistent quality and supply stability, supported by strict process controls and batch traceability. The fastener ships with clear lot codes for automation and complies with RoHS/REACH for electronics. By combining standard specifications with dependable delivery, it helps projects meet schedules, minimize downtime, and sustain peak performance across markets.

{ M3 x 55mm Bolt Hex Socket Head Screw Black Industry Leaders Guarantees Peak Performance}

Dimension	Specification	Value	Unit	Notes
Product Type	Screw Type	Hex Socket Head Cap Screw	—	DIN 912, ISO 4762
Size	Nominal Thread	M3	—	Standard metric thread
Length	Overall Length	55	mm	Measured from under the head to tip
Material	Material	Alloy Steel	—	Heat-treated when specified
Finish	Surface Finish	Black Oxide	—	Low reflectivity surface
Grade	Tensile Strength	800	MPa	Minimum Rp0.2 640 MPa
Yield Strength	Rp0.2	640	MPa	Minimum
Hardness	Hardness	36-39	HRC	Typical for 8.8 class
Head Across Flats	Head Diameter	5.2	mm	Approximate
Head Height	Head Thickness	3.5	mm	Approximate
Thread	Pitch	0.50	mm	Coarse
Thread Length	Thread Engagement	50	mm	Of 55 mm overall length
Standards	Compliance	DIN 912; ISO 4762	—	Coarse-thread standard
Operating Temp	Temperature Range	-50 to 150	°C	Excludes extreme cycles

Related Products

1-Socket-Cup-Point-Black-Oxide-Finish-Alloy-Steel-Socket-minature-Set-Screw — black stainless steel socket button head screws
Read More

supplier custom black wafer head socket screw

14-sockep-drive-Nylon-Tip-point-black-oxide-Socket-Set-grub-Screw — Black oxide socket head dog point grub screw

Pan head socket black machine screws supplier

23-6-LOBE-truss-head-machine-screw — Black truss torx head machine screws supplier

5-sealing-screw-pan-head-philip-with-o-ring-steel-black-nickel — Black nickel sealing phillips pan head screw with o ring

M3 x 55mm Bolt Hex Socket Head Screw Black Is The Best From Concept to Delivery

数据维度标题（中文）: 制造阶段的产出与质量效率

Data Dimension Title (English): Production Throughput and Quality Efficiency Across Manufacturing Stages

Explanation: This dataset illustrates how production throughput and quality efficiency vary across five manufacturing stages for the bolt components. The Raw Material Preparation stage shows moderate throughput combined with high preliminary quality control, reflecting careful material handling and supplier screening. In Machining, throughput is relatively high as automation reduces cycle times, yet the strict tolerances introduce occasional quality challenges that are mitigated through regular calibration and inline metrology. The Heat Treatment step maintains steady throughput but carries elevated risk for defects due to temperature fluctuations, requiring rigorous furnace monitoring and precise quenching control. Surface Finishing delivers a pronounced improvement in final surface integrity and appearance, with only a modest decrease in throughput due to additional finishing passes. Final Inspection concentrates on catching residual deviations, producing the lowest throughput among stages but delivering the strongest assurance that the parts meet specifications. The chart highlights where to target process improvements, such as upgrading equipment, enhancing process controls, or refining handoffs between stages. It also demonstrates that high throughput does not automatically compromise quality when proper quality gates and statistical process control are in place. This kind of dimensional analysis supports decisions about maintenance schedules, operator training, and supplier quality programs, helping to reduce rework and scrap while preserving delivery timelines. By comparing stage-level performance, teams can identify bottlenecks and allocate resources more effectively, balancing speed with precision. The insights gained from this view enable continuous improvement initiatives, inform capital investment strategies, and guide the design of robust production workflows tailored to precision fasteners like the selected bolt type. Ultimately, the goal is to maximize overall yield and consistency, minimize variability, and shorten time-to-delivery without sacrificing dimensional accuracy or functional reliability of the final product.

Top Selling Products

Related Blog
Reviews
Reviews

2026 Best Insert Nut Solutions for Global Buyers?

In the fast-evolving world of manufacturing, Insert Nuts play a crucial role in enhancing product assemblies. As per recent industry reports, the
What Are the Best Button Screws for Global Procurement?

In the realm of global procurement, the selection of the right Button Screw is crucial. Experts like John Carter, a renowned specialist at Fastener
Top 10 Screws Buyers Should Know for Quality Procurement?

In the world of manufacturing, selecting the right screws is crucial. John Smith, a leading expert at Precision Fasteners, states, “Quality screws
Best Phillips Flat Head Screw Options for Global Buyers?

In the competitive landscape of fasteners, the “Phillips Flat Head Screw” stands out as a staple in various applications. James Thompson, a

Christina 2022.12.30 00:11:30
The customer service staff's answer is very meticulous, the most important is that the product quality is very good, and packaged carefully, shipped quickly!
Steven 2022.12.26 12:53:51
The supplier abide the theory of quality the basic, trust the first and management the advanced so that they can ensure a reliable product quality and stable customers.
Julia 2022.12.24 09:25:12
It's really lucky to find such a professional and responsible manufacturer, the product quality is good and delivery is timely, very nice.
Hazel 2022.12.15 19:19:22
Good quality, reasonable prices, rich variety and perfect after-sales service, it's nice!
Maxine 2022.12.05 07:09:50
The company has a good reputation in this industry, and finally it tured out that choose them is a good choice.
Georgia 2022.12.03 05:01:48
We always believe that the details decides the company's product quality, in this respect, the company conform our requirements and the goods are meet our expectations.

Sabrina 2022.12.20 18:28:26

With a positive attitude of regard the market, regard the custom, regard the science, the company works actively to do research and development. Hope we have a future business relationships and achieving mutual success.
Carey 2022.12.17 22:50:43

As an international trading company, we have numerous partners, but about your company, I just want to say, you are really good, wide range, good quality, reasonable prices, warm and thoughtful service, advanced technology and equipment and workers have professional training, feedback and product update is timely, in short, this is a very pleasant cooperation, and we look forward to the next cooperation!
Diego 2022.12.14 19:06:01

Product quality is good, quality assurance system is complete, every link can inquire and solve the problem timely!
Eve 2022.12.14 03:23:15

The company has rich resources, advanced machinery, experienced workers and excellent services, hope you keep improving and perfecting your products and service, wish you better!
Letitia 2022.12.07 10:33:10

After the signing of the contract, we received satisfactory goods in a short term, this is a commendable manufacturer.
Joanna 2022.12.06 00:15:41

We are a small company that has just started, but we get the company leader's attention and gave us a lot of help. Hope we can make progress together!