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China Shoulder Screws Supplier - Precision Stainless & Alloy Steel Fasteners Factory for Mold Fixture Automation
🎯Product Positioning & Overview
We are a professional industrial fastener manufacturer focusing on standard and customized shoulder screw development and manufacturing. Our shoulder screw series targets precision mold, tooling fixture and automation machinery industries, solving common industry pain points including positioning offset and loose connection from ordinary machine screws. Different from conventional fasteners, our precision shoulder screw integrates positioning shoulder and fastening thread into one part to realize dual functions of fixed locking and movable rotation, forming obvious differentiated advantages versus peer suppliers. We keep bulk standard shoulder screw in stock meanwhile produce non-standard custom shoulder screw per clients’ CAD drawings, covering complete metric and inch specification systems to satisfy diversified industrial assembly demands.
🏆Product Features & Competitive Advantages
- Strict dimensional tolerance control: Every finished shoulder screw is processed under precise tolerance to guarantee smooth fitting without clamping or clearance gap, much higher precision than commercial ordinary grade shoulder screw.
- Multiple optional raw materials: Anti-rust stainless steel shoulder screw in SUS304/SUS316 for humid corrosive working environment; high tensile strength alloy steel shoulder screw for heavy-load mold and mechanical structure installation.
- Mainstream hex socket head design, compatible with standard hexagonal tool for fast batch assembly on automatic production lines.
- Flexible customized service: Adjust shoulder diameter, shoulder length, thread size and surface treatment to finish exclusive custom shoulder screw based on customer samples or technical drawings.
- Diversified surface finish: Zinc plating, black oxide and stainless steel passivation available to improve rust resistance and extend service life of the shoulder screw.
📊Product Specifications & Parameters
Our complete shoulder screw product line is sorted into metric specification group and inch specification group:
- metric shoulder screw: Thread range from M1.6 to M16, customizable shoulder diameter 2mm–30mm and shoulder length 3mm–80mm, manufactured following ISO7379 industrial standard.
- inch shoulder screw: UNC and UNF thread ranging from #2 up to 1/2 inch, produced under ASME B18.3 specification requirements.
⚙️Application Scenarios & Successful Project Cases
Our industrial-grade shoulder screw has gained wide popularity across downstream precision manufacturing industries:
- Mold manufacturing field: mold shoulder screw acts as limiting bolt and locating pin for stamping mold and plastic injection mold to control mold opening stroke and avoid plate shifting during production.
- Tooling fixture industry: fixture shoulder screw serves as rotating pivot component for all kinds of processing fixture and testing jig.
- Automation equipment field: automation shoulder screw is widely equipped on conveying equipment, robotic arm connecting structure and small precision transmission machinery.
💡Industry Solutions & Product Value
Most machinery purchasers encounter frequent troubles including mismatched dimension, short anti-corrosion lifespan and long production lead time when purchasing generic screws, and our full-series shoulder screw brings targeted one-stop solutions. High-precision machining of our shoulder screw eliminates assembly clearance error and reduces post-installation maintenance expense of end equipment. In-stock standard shoulder screw supports immediate small-batch shipment to shorten your procurement cycle, while bulk customized order of custom shoulder screw enjoys factory-direct preferential unit price to optimize your purchasing budget. Every batch of our outgoing shoulder screw goes through dimension inspection, hardness testing and salt spray test to verify product stability with actual test data.
🤝Purchase Terms & After-sale Support
- MOQ rule: In-stock standard shoulder screw accepts minimum 100pcs trial order; MOQ of tailor-made custom shoulder screw can be negotiated according to detailed specifications.
- Delivery cycle: Stock items arrange shipment within 1–3 working days; customized production order takes 7–15 working days based on total order quantity.
- Global trade service: We support EXW, FOB and CIF international trade terms and flexible payment options including T/T and L/C, with professional foreign trade team tracking full order progress.
- After-sales guarantee: We offer free replacement or compensation for defective products caused by our production fault.
📧Inquiry Guide & Form Prompt
Fill out the below online inquiry form with your needed material, detailed specification, application industry and required quantity if you need quotation for spot shoulder screw or develop exclusive custom shoulder screw. Our professional sales and technical team will reply formal offer and technical proposal within 24 working hours, and free product sample is available for quality verification before bulk purchase.
❓Frequently Asked Questions (FAQ)
What materials do you offer for shoulder screws?
We manufacture shoulder screws using high-quality materials including SUS304 and SUS316 stainless steel for corrosion resistance, as well as Grade 8.8, 10.9, and 12.9 alloy carbon steel for heavy-load industrial applications.
Can you manufacture custom shoulder screws based on technical drawings?
Yes, we specialize in custom shoulder screws. We can adjust the shoulder diameter, shoulder length, thread size, and surface treatment to meet your exact specifications based on your CAD drawings or physical samples.
What standards do your metric and inch shoulder screws follow?
Our metric shoulder screws are manufactured in accordance with the ISO7379 industrial standard, while our inch shoulder screws comply with ASME B18.3 specifications.
What is your Minimum Order Quantity (MOQ) for standard and custom orders?
For in-stock standard shoulder screws, the minimum order quantity is 100 pieces. For custom shoulder screws, the MOQ is flexible and can be negotiated according to your specific size and manufacturing requirements.
What is the typical delivery lead time for orders?
Standard in-stock items are shipped within 1 to 3 working days. For custom production orders, the lead time typically ranges from 7 to 15 working days, depending on the specifications and order volume.
Do you provide free samples for quality verification?
Yes, we offer free product samples for quality and dimensional verification before you proceed with a bulk purchase. Please contact our sales team to request your samples.