What are the lead times for production?

The average lead time is 1-3 months for both peak and off-peak seasons.

Do you offer OEM and ODM services?

Yes, we provide OEM and ODM services for railway fasteners.

What grades of bolts are available?

We offer grades ranging from 4.6 to 12.9, including 4.6, 4.8, 5.6, 8.8, 10.6, 10.9, and 12.9.

High Strength Half Thread Square Head Bolt 1/2-13 X 4" Square Railway Bolt Hex Bolt

Name: High Strength Half Thread Square Head Bolt 1/2-13 X 4" Square Railway Bolt Hex Bolt
Brand: Maanshan Kingrail Technology Co., Ltd.
SKU: 2077055242

Anhui, ChinaMaanshan Kingrail Technology Co., Ltd.

US$0.20-0.70

1 Piece

Product profile

Customization

Available

After-sales Service

1 Year

Warranty

1 Year

Model NO.

Railway Bolt Hex Bolt

Customized

Certification

ISO14001, ISO9001

Other Name

Sleeper Screw, Rail Screw or Lag Bolt,

Material

Q235,10b21,Stainless Steel

Standard

GB/T 1346,GB,JIS,ANSI,DIN,BS

Processing

Hot Rolling

Surface

Bronze,Zinc,Rainbow,Plain,Nickle,Passivated,Electr

Production

OEM ODM

Sizes

M1.6,M2,M2.5,M3,M3.5,M4,M5,M6,M8,M10-M20

Head Type

Pan,Binding,Cheese,Truss,Flat,Oval,Round,Fillister

Drive Type

Slotted(Socket),Square,Pz,Triangle,H,Torx(

Heat Treatment

Tempering,Hardening,Stress Relieving,etc.

Application

Railway, Engineering, Bridge Construction, Buildin

Grade

4.8,5.6,8.8.10.9,12.9

Quality Control

Inspection 100%

Transport Package

Wooden Box/Pallet

Specification

Rail Screw Spike for Wooden or Concrete Sleeper

Trademark

Kingrail Parts

Origin

China

HS Code

86080090

Production Capacity

50000PCS/Year

Key features

Customized Specifications: Customizable railway bolts based on customer drawings, samples, and specific requirements.

Multiple Material Options: Available in Q235, 10b21, Stainless Steel, Carbon Steel, 35#, 45#, and 40Cr grades.

Comprehensive Surface Treatments: Options include Zinc, HDG, Black Painting, Plain, Oiled, Passivated, and Dacromet.

Wide Grade Range: Available in grades 4.6, 4.8, 5.6, 8.8, 10.6, 10.9, and 12.9 for various strength needs.

International Standards Compliance: Meets AREMA, ASTM, DIN, UIC, BS, GB, JIS, ANSI, GOST, and ISO standards.

ISO and CRCC Certification: Manufactured in CRCC and ISO certified facilities ensuring high quality and reliability.

Diverse Head and Drive Types: Includes Pan, Truss, Flat, Oval, Round, Square, and various drive types like Torx and Hex.

20+ Years Industry Experience: Over two decades of specialization in railway fasteners serving global markets.

Company profile

Importers and ExportersHigh Repeat Buyers Choice

Maanshan Kingrail Technology Co., Ltd.

Anhui, China

Business Type: Manufacturer/FactoryAverage Response Time: ≤2.39h

AI-Powered supplier vetting

SummaryThe supplier is identified as a trading company with business activities covering metal-product research and development, technical services, key systems and components, railway rolling stock parts, and related equipment sales. It reports ISO 9000 and ISO 9001 certification, OEM service for well-known brands, ODM capability, and broad customization options. Reported production capacity includes wheels, track materials, and metal products, while quality-control and traceability evidence is incomplete. The supplier has one R&D engineer, no new products reported in the past year, no available SDK, and no R&D audit documentation. After-sales service is included in the R&D engineer’s responsibilities, but documented complaint-handling and corrective-action records are absent. No monetary or financial figures are included in this assessment; the available records only identify financial information for three historical years. Overseas service infrastructure is limited, with no overseas agents, branches,...

Supplier typeThe supplier is explicitly classified as a trading company. Its stated activities include metal-product R&D and technical services, as well as sales of key systems, railway rolling stock parts, and related equipment.

CertificationsThe supplier reports ISO 9000 and ISO 9001 management-system certifications. However, quality assurance status is unspecified, and approved-supplier, corrective-action, and complaint-handling records are incomplete or undocumented.

Production capacityReported annual capacity includes 20,000 wheels, 10,000 tons of track materials, and 800 tons of metal products, supported by 11–20 quality-control staff and ISO certifications. However, the supplier states it has no in-stock service capacity, while raw-material traceability and outsourcing controls remain unknown.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, and minor customization, and also provides ODM services. These statements directly support broad customization capability.