What materials are available for this bolt?

Available materials include High Strength Steel and various Stainless Steels such as 201, 304, 316, 321, 309S, 410, 420, and 430.

Can the bolt size and head style be customized?

Yes, sizes range from M6 to M30, and head styles include Round, Hexagonal, Counter Sunk Bolt, and Square.

M12 M16 M20 Guardrail Step Neck Square Head Bolt

Name: M12 M16 M20 Guardrail Step Neck Square Head Bolt
Brand: Hand Industrial Co., Limited
SKU: 809315995

Jiangsu, ChinaHand Industrial Co., Limited

US$0.0167-2.5627

1,000 Pieces

Product profile

Customization

Available

Material

Stainless Steel

Type

Mushroom Head

Model NO.

DIN603

Connection

Common Bolt

Head Style

Mushroom Head

Standard

DIN, ANSI, GB, JIS, Per Customers Desire

Grade

A2;A4

Application

Machinery

Finish

Passivation

Size

M6~M30

Screw Name

Stainless Steel 316 Square Neck Carriage Bolts

Certification

ISO9001

Export Markets

Global

Available Material

High Strength Steel, Stainless Steel

Used

Machinery, Chemical Industry, Environmental

Surface Finishing

Black, Color-Zinc, Blue-White Zinc

Screw Type

Hexagon Head, Round Head, Countersunk Head

Screw Groove

Triangle, Cross, Flower, Flower Word, Special Sha

Screw Head Style

Round, Hexagonal, Counter Sunk Bolt, Square

Transport Package

25*16*25cm Carton Box, Then Polywood Box Packed

Specification

M12, M16, M20

Trademark

Hande

Origin

Jiangsu

HS Code

73181600

Production Capacity

100tons/Year

Key features

Wide Material Selection: Available in 201, 304, 316, 321, 309S, 410, 420, 430 stainless steel and high strength steel.

Customizable Standards: Supports DIN, ANSI, GB, JIS standards and accepts custom customer requirements.

Flexible Screw Types: Offers Hexagon Head, Round Head, Countersunk Head, and various groove styles.

Multiple Surface Finishes: Provides Passivation, Black, Color-Zinc, and Blue-White Zinc finishing options.

Low MOQ Advantage: Supports low minimum order quantities to accommodate diverse customer needs.

Fast Sample Delivery: 3-day sampling for existing molds; 5-7 days for custom requests.

Rapid Production: 3 days for stock items; 7-15 days for production items.

Global Export Experience: Exporting globally since 2010 with extensive market coverage.

Company profile

High Repeat Buyers ChoiceYears of Export ExperienceR&D CapabilitiesFlexible Customization

Hand Industrial Co., Limited

Jiangsu, China

Business Type: Manufacturer/FactoryExport Year: 2010-10-11Nearest Port: Shanghai, Ningbo, GuangzhouAverage Response Time: ≤4.91hTerms of Payment: LC, T/T, PayPal, etc.International Commercial Terms(Incoterms): FOB, CFR, CIF, DAT, FAS, DDP, DAP, CIP, CPT, FCA, EXW, Others

AI-Powered supplier vetting

SummaryHand Industrial Co., Limited is identified as a China-based manufacturer/factory in Jiangsu producing screws, bolts, fasteners, nuts, and rivets. The supplier demonstrates documented procedures for service assessment, corrective and preventive actions, and complaint handling, with records showing implementation. It reports inventory capability, overseas agents or branches, participation in Fastener Fair Mexico 2025, broad export-market coverage, and customization from samples, designs, and full or minor specifications. Production information includes 6,000 tons of screws and nuts, with peak-season fulfillment within 15 workdays; off-season lead-time information is inconsistent across the provided records. The supplier has introduced new products but does not provide 3D software design, ODM, SDK, or well-known-brand OEM services. A TUV Rheinland audit record is provided, but the audit result is recorded as 0 and no certification holding is explicitly identified. Financial credibility cannot be established...

Supplier typeThe supplier is identified as both a manufacturer/factory and a trading company, with the legal company name Hand Industrial Co., Limited. Its stated business scope includes hardware wholesale, metal-material sales, and import/export activities, indicating manufacturing and trading functions.

After-Sales capabilityThe supplier has written procedures and followed records for handling customer complaints, as well as documented corrective and preventive action procedures. It also reports overseas agents or branches and participation in Fastener Fair Mexico 2025, supporting service contact capability, although no specific response-time or warranty terms are provided.

R&D capabilityThe supplier is identified as a professional technical supplier and has developed new products within the past year. However, it does not provide ODM services, SDK access, or 3D software design services, limiting the evidence for advanced platform-based innovation.

Production capacityThe supplier reports in-stock capability, annual screws-and-nuts output of 6,000 tons, 20 qualified suppliers, and peak-season order fulfillment within 15 workdays. It has access to Shanghai, Ningbo, and Guangzhou ports, while off-season lead-time data is inconsistent: one record states within 15 workdays and another states one month.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. This directly supports a broad range of product customization requirements, although 3D software design services are not available.

Product Q&A

Q:Are you a trading company or manufacturer?

We are a manufacturer.

Q:How long is your delivery time?

Generally 7-15 days if goods are in stock, or 15-20 days if not in stock, depending on the specific item and quantity. We have large stock for 3-day delivery on stock items and 7-15 days for production.

Q:Do you provide samples? Is it free or extra?

Yes, we can offer samples for free charge, but the customer does not pay the shipping cost.

Q:What are your terms of payment?

For orders less than USD 5000, 100% T/T in advance. For orders more than USD 5000, 50% T/T in advance with the balance before shipment. Other terms are welcome.

Q:What are your price terms?

We accept EXW, FOB, CIF, CFR, FCA, CPT, CIP, DAP, and DDP.