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M4 Shoulder Screw - China Manufacturer of Precision Fasteners

From our workshop in China, I offer the m4 shoulder screw that my factory designs for precision assemblies and long service life. As a China-based Manufacturer, I know B2B buyers want reliable fasteners that can keep tight tolerances under load. This m4 shoulder screw features a hardened steel body with a proper shoulder for accurate alignment, standard M4 external thread, and options in stainless steel or heat-treated steel. It’s ideal for hinges, guides, jigs, and machinery where repeatable positioning matters. I provide short lead times, customizable shoulder length and finish, and competitive pricing for bulk orders. I can support OEM packaging and private labeling if needed. Durable, corrosion resistant, and easy to install, this screw helps reduce downtime and improve assembly quality. Reach out with your required length, finish, and quantity and I’ll tailor a quote fast.

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m4 shoulder screw Manufacturer Supplies the World\u2019s Top Brands

Global manufacturing relies on M4 shoulder screws for precise alignment and smooth motion in assemblies from consumer electronics to automation equipment. An M4 shoulder screw features a precise cylindrical shoulder and a metric 4 mm thread, delivering consistent performance under vibration and during repeated cycles. With carefully chosen materials and finishes—stainless steel, alloy steel, or protective plating—plus strict dimensional control, these fasteners provide reliable operation and long service life across industries. Global buyers expect reliable quality, predictable lead times, and clear traceability. A capable supplier uses advanced turning, grinding, and controlled heat treatment to meet tight tolerances, with thorough inspections at first article and batch release. Options include varied shoulder lengths, thread depths, and finishes such as zinc, nickel, or black oxide to suit corrosion resistance and aesthetics. Compliance with ISO 9001 and material standards (RoHS/REACH) adds confidence for regulated markets. Efficient packaging, scalable production, and flexible logistics support multi-site procurement and just‑in‑time delivery, helping buyers keep assemblies on schedule. A dependable partner provides consistent quality, transparent documentation, and reliable inventory, reducing risk and accelerating time-to-market for new products.

{ m4 shoulder screw Manufacturer Supplies the World’s Top Brands }
Model Material Finish Head Type Thread Size Shoulder Diameter (mm) Shoulder Length (mm) Thread Length (mm) Overall Length (mm) Dimensional Tolerance Application
SS-A2-70-M4-06 Stainless Steel A2-70 Plain / Passivated Shoulder Bolt with Socket M4 4.0 6 6 16 ±0.08 Coupling alignment
SS-A2-70-M4-08 Stainless Steel A2-70 Passivated Shoulder Bolt with Socket M4 4.0 8 8 18 ±0.08 Limit stop
SS-A4-80-M4-10 Stainless Steel A4-80 Black Oxide Socket Head M4 4.0 10 6 22 ±0.08 High corrosion resistance
AL-6061-M4-12 Aluminum 6061-T6 Anodized Cylinder Head M4 4.0 12 6 24 ±0.10 Light-duty guide
SS-Zn-M4-16 Steel (Zinc Plated) Zinc Plated Socket Head M4 4.0 16 6 28 ±0.10 General assembly

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m4 shoulder screw Exceeds Industry Benchmarks From Concept to Delivery

Lifecycle Lead Time by Stage (Concept to Delivery)

4
12
18
14
28
38
26
9
Concept
Design
Prototyping
Validation
Tooling
Manufacturing
Assembly
Delivery

Explanation: The dataset illustrates the lifecycle lead time for a mechanical component from concept to delivery, measured in days. The eight stages show a typical sequential pattern with the heavy emphasis on tooling and manufacturing. The initial concept phase is the shortest (4 days), reflecting rapid ideation and feasibility screening. The design stage takes about 12 days, indicating iterative refinement but moderate complexity. Prototyping (18 days) adds significant time due to build and test cycles. Validation (14 days) captures verification against specifications. The tooling stage (28 days) marks the most time-consuming setup for tooling, molds, or jigs, which often governs overall cycle time. Manufacturing (38 days) represents the largest contributor to lead time, as it includes setup, process optimization, and production runs. Assembly (26 days) adds integration time and quality checks. Delivery (9 days) includes packing and logistics. The peak at Manufacturing suggests a potential area for optimization; strategies could include parallelization of activities, concurrent engineering, and pre-qualification of tooling during design, or modular design to reduce tooling dependency. The spread between early stages (Concept and Delivery) and mid-to-late stages highlights the importance of early-stage design for manufacturability and robust supply chain readiness. If this dataset were real, improvements might focus on reducing tooling lead times through vendor qualification and flexible tooling strategies, re-using shared tooling across products, and implementing options for shorter-cycle production or alternative manufacturing methods. A rapid prototyping approach could reduce early-stage times, while enhanced validation through simulation and digital twins could shorten verification. In a project environment, tracking these stages with a dashboard helps identify bottlenecks quickly and align cross-functional teams to reduce overall cycle time while maintaining quality. The chart demonstrates how different stages contribute to the total lead time and how targeted improvements in the most time-intensive stages can yield meaningful reductions in time-to-market, ultimately supporting faster iteration cycles and improved competitiveness.

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  • Jane 2022.12.30 03:13:37

    This is a reputable company, they have a high level of business management, good quality product and service, every cooperation is assured and delighted!

  • Delia Pesina 2022.12.28 18:03:24

    This supplier stick to the principle of Quality first, Honesty as base, it is absolutely to be trust.

  • Dana 2022.12.21 05:35:15

    We are really happy to find such a manufacturer that ensuring product quality at the same time the price is very cheap.

  • Mark 2022.12.19 02:58:15

    Company director has very rich management experience and strict attitude, sales staff are warm and cheerful, technical staff are professional and responsible,so we have no worry about product,a nice manufacturer.

  • Eleanore 2022.12.16 16:44:34

    The company can keep up with the changes in this industry market, product updates fast and the price is cheap, this is our second cooperation, it's good.

  • Pag 2022.12.07 18:58:51

    This is a very professional wholesaler, we always come to their company for procurement, good quality and cheap.

  • Elma 2022.12.30 00:20:14

    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.

  • Amy 2022.12.28 03:58:02

    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.

  • Christine 2022.12.14 23:03:19

    We have been engaged in this industry for many years, we appreciate the work attitude and production capacity of the company, this is a reputable and professional manufacturer.

  • Riva 2022.12.14 01:00:34

    The factory workers have a good team spirit, so we received high quality products fast, in addition, the price is also appropriate, this is a very good and reliable Chinese manufacturers.

  • Muriel 2022.12.12 07:36:11

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

  • Ray 2022.12.03 16:21:03

    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.

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