Industrial Long Bolts with Sealing Ring
High-performance 1/4 inch long bolts designed for critical machinery connections requiring superior strength and corrosion resistance. These fasteners provide reliable stability for engines, transmission systems, support frames, gearboxes, reducers, clutches, and transformers.
Material Specifications
| Material Type | Available Options |
|---|
| Stainless Steel | SUS201, SS303, SS304, SS316, SS410, SS430 |
| Carbon Steel | C1018, C1022, 10B21 |
| Alloy Steel | 40Cr, SCM435 |
| Non-Ferrous Metals | Brass, Aluminum, Copper |
| Custom Materials | Available upon request |
Design & Configuration Options
| Feature | Available Options |
|---|
| Head Style | Pan, Truss, Flat, Hexagonal, Round, HEX, Cheese, Binding, Oval |
| Drive Style | Phillips, Torx, Inner Hexagonal, Hexagonal, Plum, Cross, Slotted, Star |
| Thread Type | Self-tapping, Machine teeth (Coarse/Fine), Custom thread |
| Standards | DIN, ISO, ANSI, BSW, JIS, GOST, GB |
Surface Treatment & Finishes
| Treatment Type | Available Options |
|---|
| Plated Finishes | Zinc, Zinc nickel alloy, Chrome, Silver, Gold, Brass, Tin |
| Coating Systems | Dacromet, MAGni, Geomet, Electrophoresis, Baking paint |
| Oxidation Treatments | Black Oxide, Anodic oxidation, Passivation |
Performance Grades
| Material | Performance Grades |
|---|
| Carbon Steel | 4.8~12.9 grade |
| Stainless Steel | A2-70, A4-70, A4-80, A5-80 |
| Carburized Surfaces | HV400-HV550 hardness |
Customization Capabilities
| Parameter | Customization Range |
|---|
| Anticorrosion Testing | Custom salt spray testing: 12H, 24H, 48H, 96H, 196H, 240H, 480H, 720H, 840H |
| Size Range | M0.6mm, M0.8mm ~ M36mm |
| Length Range | 1mm~600mm |
Manufacturing Excellence
Lock Technology (Shenzhen) Co., Ltd. specializes in fastener and precision machined parts manufacturing since 2007. Our 40,000 square meter facility in Shenzhen houses over 1,000 production equipment units, serving automotive, electronics, electrical equipment, and medical industries worldwide.
Quality Certifications
ISO9001, IATF16949, ISO14001, ISO45001 certified manufacturing processes ensure consistent quality and reliability.
Production & Delivery Timeline
| Order Quantity (pieces) | Lead Time (days) |
|---|
| 1 - 10,000 | 10 |
| 10,001 - 50,000 | 15 |
| 50,001 - 100,000 | 20 |
| > 100,000 | Negotiable |
Frequently Asked Questions
Q1: Can you provide customized services?
Yes, we offer comprehensive OEM/ODM services with 20+ years experience in custom non-standard screws. We can develop product drawings based on your specific requirements.
Q2: Can you supply samples?
Free samples available for existing molds. New tooling requires customer to cover mold development and shipping costs.
Q3: How do you ensure quality?
Our professional QC department implements ISO9001, IATF16949, and other international standards. We provide samples for customer confirmation before production begins.
Q4: What is the MOQ?
500-5,000 pieces depending on product complexity and value. We accept trial orders before mass production commitments.
Q5: What transportation options are available?
Sea freight, air cargo, or express delivery options available based on your timeline and budget requirements.
Q6: How to place orders and make payment?
Send purchase order or confirmation email. We'll provide Proforma Invoice with bank details. Accept PayPal and Letter of Credit payments.
