Custom Length Carriage Bolt for Special Installation

• Customization: Available
• Material: Carbon Steel
• Type: Round Head
• Model NO.: Bolt
• Connection: Common Bolt
• Head Style: Round
• Standard: DIN, ANSI
• Grade: 8.8
• Application: Machinery, Chemical Industry, Environmental, Building
• Finish: Color-Zinc Plated
• Sample: Sample Avaliable
• Quality Control: 100% Inspection
• MOQ: 1000PCS
• Certificate: ISO9001:2008
• Transport Package: Carton+Pallet
• Specification: M4-M128
• Trademark: JM Hardware ®
• Origin: China
• HS Code: 7318150000
• Production Capacity: 10000000PCS/Month
• Package Size: 22.00cm * 22.00cm * 22.00cm
• Package Gross Weight: 16.000kg
• Lead Time: 15 days (1 - 1000 Pieces) ; To be negotiated ( > 1000 Pieces)

Product Description

Custom Length Carriage Bolt for Special Installation

Specification

Material	1.StainlessSteel:SS201,SS303,SS304,SS316,SS410,SS420 2.Steel:C45(K1045), C46(K1046),C20 3.Carbon Steel: 1010,1035,1045
Grade	SAE J429 Gr.2, 5,8; ASTM A307Gr.A,A193 B7,B8,B8M,A194 2H, Class 4.8, 5.8, 6.8, 8.8, 10.9, 12.9 and etc.
Finish	Plain, Zinc Plated(Clear/Blue/Yellow/Black), Black oxide, Nickel, Chrome, H.D.G and etc.
Thread	UNC,UNF,UEF,UN,UNS
Standard	ISO, DIN, ANSI, JIS, BS and Non-standard
Sample Service	Samples are all in free.
Certificate	ISO9001,CE, SGS, BV
Packing	Bulk in cartons (25kg Max.)+wood Pallet or according to customer special demand
Payment terms	FOB, CIF, CFR, L/C, or others.
Delivery method	by sea, by air or by express service
Application	Structural Steel; Metal Buliding; Oil&Gas; Tower&Pole; Wind Energy; Mechanical Machine; Automobile: Home Decorating and etc.

Product Description

Industrial Carriage Bolt for Reliable Power Transmission

JM Hardware® manufactures carriage bolts designed for industrial applications where stable fastening and reliable performance are required.

Carriage bolts supplied by JM Hardware® are widely used in power transmission systems, conveyor equipment, and mechanical assemblies.

JM Hardware® provides carriage bolts in different materials, sizes, thread types, and surface treatments to meet various operating conditions and installation requirements. Standard products and customized solutions based on drawings are both available.

Certifications

Certified Manufacturing and Quality Management System

JM Hardware® operates under internationally recognized quality management systems and follows applicable product standards.

JM Hardware® holds multiple certifications related to quality management, supplier assessment, and manufacturing control, ensuring stable production processes and traceable quality records.

Certification documents from JM Hardware® can be provided upon request to support customer quality verification and audits.

Why Choose JM Hardware

Reliable Industrial Fastener Supplier – JM Hardware®

JM Hardware® offers one-stop supply services and can assist customers in sourcing related industrial fasteners and components.

With strong R&D capability and long-term manufacturing experience, JM Hardware® supports both standard carriage bolts and customized fastening solutions.

JM Hardware® combines rich industry experience, a professional service team, extensive export background, and registered trademarks in major international markets to ensure reliable cooperation.

Quality Control

Strict Quality Control Throughout the Production Process

At JM Hardware®, quality control is implemented at every stage of carriage bolt production.

From raw material inspection to in-process monitoring and final inspection before shipment, JM Hardware® follows defined inspection procedures to ensure dimensional accuracy and product consistency.

This systematic quality control approach at JM Hardware® helps reduce risks during installation and long-term operation.

Production & Testing Equipment

Advanced Equipment for Stable and Flexible Production

JM Hardware® is equipped with complete production facilities for fastener manufacturing, including machining, threading, heat treatment, and surface treatment processes.

The production equipment at JM Hardware® supports both small-batch orders and mass production, allowing flexible scheduling while maintaining stable product quality.

Professional Testing to Ensure Product Reliability

JM Hardware® uses professional testing equipment to verify the mechanical and dimensional performance of carriage bolts.

Testing items may include dimensional inspection, hardness testing, tensile performance verification, and surface condition checks, depending on product requirements.

Inspection and testing reports issued by JM Hardware® can be provided when required.

Packaging & Shipping

Safe Packing and Efficient Export Logistics

JM Hardware® packs carriage bolts according to product characteristics and customer requirements to ensure safety during transportation.

Common packing methods include cartons, wooden cases, pallets, and customized packaging solutions with clear labeling.

With extensive export experience, JM Hardware® supports different delivery terms and shipping arrangements to meet global customer needs.

Long-Term Cooperation with Global Customers

JM Hardware® regularly participates in international exhibitions and maintains stable cooperation with customers from different industries and regions.

Through exhibitions, customer visits, and factory audits, JM Hardware® continuously improves its understanding of application requirements and service standards.

Customers are welcome to visit JM Hardware® for technical communication and long-term cooperation.

FAQ

FAQ — Fasteners

1) Can JM Hardware® produce customized fasteners based on drawings?
A: Yes. JM Hardware® supports customized production based on drawings, samples, or technical requirements. Customers can provide drawings (PDF/DWG/STEP), material/specification requests, and key dimensions/tolerances. JM Hardware® will review feasibility, confirm process route, and provide a quotation with lead time.
 
2) What information should I provide to get a fast and accurate quotation from JM Hardware®?
A: For an efficient quotation, JM Hardware® recommends providing:
Product type (e.g., stud bolt, carriage bolt, bolt with internal thread)
Standard (ASTM/DIN/ISO/GB or customer spec)
Size (diameter × length), thread type (metric/inch)
Material grade (e.g., stainless steel, alloy steel, carbon steel)
Surface treatment (e.g., zinc plating, HDG, black oxide, phosphate)
Quantity and target delivery time
Application environment (if corrosion/high temperature is involved)
With complete details, JM Hardware® can respond faster and reduce back-and-forth.
 
3) What materials are available for JM Hardware® fasteners?
A: JM Hardware® offers fasteners in common industrial materials such as stainless steel, carbon steel, alloy steel, aluminum alloy, copper, and other special alloys based on customer requirements. Material selection can be aligned with strength requirements, corrosion conditions, and project standards.
 
4) What surface treatments can JM Hardware® provide?
A: JM Hardware® can provide multiple surface treatments based on application needs, such as zinc plating, hot dip galvanizing (HDG), black oxide, phosphate coating, and other customized finishes. If you have coating thickness or corrosion resistance requirements, JM Hardware® can align production and inspection accordingly.
 
5) Does JM Hardware® provide samples before mass production?
A: Yes. JM Hardware® can provide samples for confirmation when required. For standard items, available samples may be provided quickly. For customized items, JM Hardware® can arrange sample production after confirming drawings/specifications. Sample lead time depends on complexity and material availability.
 
6) How does JM Hardware® control quality?
A: JM Hardware® implements quality control throughout production, including:

Raw material verification and incoming inspection
In-process inspection during forming/machining/threading
Final inspection before packing and shipment
Packaging checks and traceability labeling
This systematic approach helps JM Hardware® maintain stable product quality and reduce installation risks.
 
7) What testing and inspection can JM Hardware® provide?
A: JM Hardware® can support dimensional inspection and mechanical property verification according to product requirements. Depending on standards and customer requests, JM Hardware® may provide checks such as hardness, tensile performance verification, thread inspection, and surface condition verification. Inspection reports can be provided when required.
 
8) Can JM Hardware® supply products with nuts, washers, or complete sets?
A: Yes. JM Hardware® can supply fasteners as complete sets (e.g., stud bolt + nuts, bolt + nut + washer combinations) according to your installation needs. This helps customers reduce sourcing workload and ensures matching components for assembly.
 
9) What are JM Hardware®'s typical packaging options?
A: JM Hardware® offers export-oriented packaging options such as cartons, wooden cases, pallets, and customized packaging. Labeling can include size, grade, quantity, heat/lot information, and customer-required marks. Packaging can be adjusted to match destination logistics and warehouse requirements.
 
10) What shipping terms and logistics support can JM Hardware® provide?
A: JM Hardware® supports common international shipping arrangements and can cooperate with customer-appointed forwarders or recommend suitable logistics solutions. Typical shipment methods include sea freight, air freight, and express delivery depending on order urgency and weight/volume.
 
11) What is JM Hardware®'s lead time for standard and customized orders?
A: Lead time depends on product type, material, surface treatment, and quantity. Standard items may have shorter lead times if stock or production schedule is available. Customized fasteners usually require additional time for drawing confirmation, tooling (if needed), and sample approval. JM Hardware® will confirm lead time clearly during quotation.
 
For more information about JM Hardware®, please feel free to contact us for technical support and quotation.