






Metal Stamping Parts
DIN 931 Grade 8.8 Zinc Plated Hex Bolt for Chemical Industry
High-strength Grade 8.8 zinc plated hex bolt for chemical, machinery & construction. Custom sizes & coatings available. ISO9001 certified manufacturer.
- Finish
- Color-Zinc Plated
- Certification
- SGS,IATF16949,etc.
- Place of Origin
- China
Technical data
Specifications
| Place of Origin | China |
|---|---|
| Certification | SGS,IATF16949,etc. |
| Model NO. | Hex Bolt |
| Head Style | Hexagonal |
| Standard | DIN, ANSI, GB, JIS, BSW, GOST |
| Grade | 8.8 |
| Application | Machinery, Chemical Industry, Environmental, Building |
| Finish | Color-Zinc Plated |
| Coating | Plain, Black, Galvanized, HDG, Etc. |
| Dimension | As Per Drawing Or Custom′s Sample |
| After-Sale Service | Yes |
| Transport Package | Box |
| Specification | Custom |
| Origin | China |
| Supply Ability | 500000 Piece/Pieces Per Day |
| Package Size | 25.00cm * 25.00cm * 10.00cm |
Description
About this part
DIN 931 Grade 8.8 Zinc Plated Carbon Steel Hex Head Bolt for Chemical Industry Applications
Product Overview
High-quality metric stainless steel galvanized hex bolts manufactured to DIN 931 standards, available in various materials and custom specifications for industrial applications.

Specifications
- Material Options: Stainless Steel (SUS201, SS303, SS304, SS316, SS410, SS430), Carbon Steel (C1018, C1022, 10B21), Alloy Steel (40Cr, SCM435), Brass, Aluminum, Copper
- 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/DIN/BSW/JIS/GOST/GB
- Size Range: M0.6mm – M36mm
- Length Range: 1mm – 600mm
Surface Treatment Options
- Plated: Zinc, Zinc nickel alloy, Chrome, Silver, Gold, Brass, Tin
- Coating: Dacromet, MAGni, Geomet, Electrophoresis, Baking paint
- Passivation & Oxide: Black Oxide, Anodic oxidation
Performance Specifications
- Carbon Steel: 4.8~12.9 grade
- Stainless Steel: A2-70, A4-70, A4-80, A5-80
- Hardening: HV400-HV550 carburized surfaces
- Anticorrosion: Customizable salt spray testing (12H-840H)
Quality Assurance
- Performance test reports
- Salt spray test reports
- Dimensional inspection reports
- PPAP, PSW documentation
- Compliance with RoHS, SCHV, MSDS, IMDS standards
Ordering Information
| Quantity (pieces) | Lead Time (days) |
|---|---|
| 1 – 10,000 | 10 |
| 10,001 – 50,000 | 15 |
| 50,001 – 100,000 | 20 |
| > 100,000 | Negotiable |
MOQ: 500pcs for stocked items, 5000pcs for custom sizes/materials (negotiable)
Packaging: Independent carton, self-sealing bag, blister, vacuum packaging, pallet
Shipping: FedEx, DHL, UPS, or customer-specified carriers
Company Profile
Lock Technology (Shenzhen) Co., Ltd. specializes in fastener and precision machined parts manufacturing since 2007. With a 40,000 sqm facility in Shenzhen and over 1,000 production equipment units, we serve automotive, electronics, appliances, medical, and other industries worldwide.

Frequently Asked Questions
Q1: Can you provide customized services?
A: Yes, we offer OEM/ODM services with 20+ years experience in custom non-standard screws. We can provide product drawings based on your requirements.
Q2: Can you supply samples?
A: Free samples available for existing molds. New molds require customer coverage of mold and shipping costs.
Q3: How do you ensure quality?
A: We maintain strict ISO9001, IATF16949, ISO14001 compliance with professional QC processes including dimensional inspection and sample confirmation.
Q4: What is your MOQ?
A: 1,000-10,000pcs for high-value products, 20,000pcs for standard items. Trial orders accepted before mass production.
Q5: What shipping options are available?
A: Sea, air, or express door-to-door delivery available per customer preference.
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