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العربية carbon steel hex bolts manufacturer
XZ Fastener manufactures carbon steel hex bolts for industrial buyers who need stable dimensions, controlled mechanical properties, and finish options for different assembly environments. Products can be supplied according to DIN, ISO, ANSI, ASME, and drawing-based requirements, with common grades including 4.8, 8.8, 10.9, 12.9, SAE, and ASTM specifications. Full thread and partial thread styles are available upon request. Buyers can specify zinc plated, black oxide, hot dip galvanized, plain, or custom coating requirements together with size list, quantity, packaging, and inspection details.
Metric and inch carbon steel hex bolts can be supplied for machinery, steel fabrication, construction, equipment assembly, and maintenance projects.
Quick Specs
What Buyers Should Know Before Sourcing Carbon Steel Hex Bolts
Carbon steel hex bolts are selected when buyers need predictable strength, economical production, and broad finish choices. The most important point is to separate the dimensional standard from the strength requirement. DIN 933, DIN 931, ISO 4017, ISO 4014, ANSI B18.2.1, and ASME descriptions define geometry, while grade standards define tensile strength, proof load, and hardness.
For full-thread metric orders, many buyers use DIN 933 carbon steel hex bolts as the purchasing description. For partial-thread assemblies, check grip length, thread length, and shank diameter before confirming the order.
Procurement checks
- Confirm standard, diameter, pitch, length, and thread style.
- Specify the strength grade and material requirement clearly.
- Match coating selection with application environment.
- Confirm nut grade, washer size, and thread compatibility.
- State packing, marking, inspection, and test document requirements before quotation.
Common Purchasing Descriptions
Metric hex bolt descriptions
- DIN 933 full thread hex bolts, carbon steel, zinc plated
- Grade 8.8 carbon steel hex bolts, black oxide finish
- Metric hex head bolts, M6 to M36, full thread or partial thread
- Zinc plated DIN 933 bolts for machinery and equipment assembly
- Hot dip galvanized DIN 933 bolts for outdoor steel structures
Project and drawing descriptions
- DIN 931 partial thread hex bolts with controlled shank length
- ISO 4017 hex head bolts, Grade 8.8 or Grade 10.9
- Black oxide DIN 933 bolts for machinery installation
- Carbon steel hex bolts with matching nuts and flat washers
- Custom hex bolts produced according to drawing and sample requirement
For long grip length or partial-thread requirements, buyers may compare DIN 931 carbon steel hex bolts before deciding whether full thread or partial thread is suitable for the assembly.
Detailed Specifications Table
| Specification Item | Common Options | Buyer Notes |
|---|---|---|
| Product type | Hex head bolt, full thread bolt, partial thread bolt, hex cap screw | Confirm whether the application requires full thread engagement or an unthreaded shank area. |
| Стандарты | DIN 933, DIN 931, ISO 4017, ISO 4014, ANSI / ASME B18.2.1, drawing parts | The selected standard affects head size, thread length, body diameter, and measurement method. |
| Diameter range | Common metric sizes M5 to M64; inch sizes available upon request | Large sizes and special lengths should be checked with drawings or samples. |
| Length | Standard lengths or custom lengths according to order requirement | Measure bolt length from under the head to the end of the bolt unless the drawing states otherwise. |
| Thread | Metric coarse, metric fine, UNC, UNF, special thread | Pitch and tolerance should be confirmed, especially when bolts are paired with pre-supplied nuts. |
| Strength grade | 4.8, 5.8, 8.8, 10.9, 12.9, SAE, ASTM grades | For common high-strength metric orders, review DIN 933 Grade 8.8 hex bolts and confirm the required mechanical properties. |
| Материал | Low carbon steel, medium carbon steel, alloy carbon steel | Material selection depends on grade, heat treatment, load, and service environment. |
| Finish | Plain, zinc plated, yellow zinc, black oxide, hot dip galvanized, zinc flake, PTFE | Coating should be selected with thread fit, corrosion exposure, and assembly friction in mind. |
| Inspection | Dimensions, thread gauge, hardness, tensile test, coating thickness, visual check | Inspection scope should be stated before quotation so cost and lead time can be reviewed accurately. |
| Packaging | Bulk cartons, small boxes, bags, pallets, labels, customer-specified packing | Export packaging, carton weight, pallet size, and label format can be arranged according to order requirement. |
Material and Grade Explanation
Carbon steel hex bolts can be produced from low carbon steel for lower-strength applications, medium carbon steel for stronger mechanical performance, or alloy carbon steel when heat treatment and higher tensile strength are required. The material should match the required grade, not only the price target.
Grade 4.8 bolts are commonly used for light-duty assemblies. Grade 8.8 carbon steel hex bolts are widely used for machinery and steel structures. Grade 10.9 and 12.9 bolts require tighter process control and are usually selected for higher-load connections. For inch fasteners, SAE and ASTM grade descriptions should be confirmed separately from the dimensional standard.
Grade selection reminders
- Confirm tensile strength, yield strength, hardness, and proof load where applicable.
- Check whether heat treatment is required for the selected grade.
- Match the bolt grade with compatible nut and washer grades.
- Confirm head marking requirements before production.
- Request material or mechanical documents if the project requires traceability.
Surface Finish Selection Guide
Plain or oiled
Suitable for controlled indoor storage, later coating, or applications where corrosion protection is handled after assembly.
Zinc plated
Common for general machinery and indoor equipment. Zinc plated DIN 933 bolts can be supplied in white zinc or yellow zinc upon request.
Чернение
Often used for machinery appearance and light protection with oil. Black oxide DIN 933 bolts should not be selected as heavy outdoor protection.
Hot dip galvanized
Used for outdoor structures, infrastructure, and exposed steelwork. Hot dip galvanized DIN 933 bolts require thread fit confirmation with matching nuts.
Zinc flake
Available upon request for higher corrosion resistance and applications where coating performance must be balanced with thread fit.
PTFE coating
Can be supplied for corrosion resistance, color identification, and controlled assembly requirements after the application is reviewed.
For comparing coating choices, salt spray expectations, and thread-fit concerns, review XZ Fastener’s fastener coating guide before finalizing the finish.
Manufacturing and Quality Control
Carbon steel hex bolt production may include raw material inspection, wire drawing or bar preparation, cold heading or hot forging depending on size, thread rolling or thread cutting, heat treatment for high-strength grades, surface finishing, sorting, and packing. Buyers can review the general process in XZ Fastener’s guide to how bolts are manufactured.
Quality control can include dimensional checks, thread inspection, head marking review, hardness testing, tensile testing, proof load testing, coating thickness checks, and final packing inspection. For thread acceptance, go/no-go thread gauge testing can be arranged according to order requirement.
Приложения
- Industrial machinery and equipment frame assembly
- Steel structure connections, brackets, and support systems
- Construction projects requiring metric hex head bolts or inch hex bolts
- Pipe supports, skids, platforms, and plant maintenance
- Automotive, agricultural, and general repair applications
Carbon steel hex bolts are widely used when a project needs a balance of mechanical strength, cost control, coating flexibility, and broad size availability. For outdoor applications, coating selection and matching nut finish are important. For vibration or dynamic load, nut type, washer selection, and tightening method should be reviewed together.
When standard bolts cannot meet a drawing, special length, non-standard thread, or coating requirement, custom production can be reviewed based on drawings, samples, or clear purchase descriptions.
How to Get a Faster Quotation
A complete inquiry helps XZ Fastener check material, process, finish, inspection, and packaging before quoting. For carbon steel hex bolts, provide the standard, diameter, pitch, length, grade, thread style, finish, quantity, and application environment. If the bolts must match existing nuts or washers, include those details in the same request.
Recommended inquiry details
- Standard: DIN 933, DIN 931, ISO 4017, ISO 4014, ANSI, ASME, or drawing
- Size: diameter, pitch, length, and thread length if partial thread
- Grade: 4.8, 8.8, 10.9, 12.9, SAE, ASTM, or custom requirement
- Finish: plain, zinc plated, black oxide, hot dip galvanized, zinc flake, PTFE
- Quantity, packing method, label requirement, and destination information
Useful attachments
- Technical drawing with tolerances and thread details
- Sample photos showing head marking and finish
- Assembly list for matching nuts and washers
- Inspection checklist or test report format
- Carton, pallet, barcode, or private label instructions
When the order information is ready, send it through the request a quote page for review.
Часто задаваемые вопросы
What standards can XZ Fastener supply for carbon steel hex bolts?
XZ Fastener can supply carbon steel hex bolts according to DIN 933, DIN 931, ISO 4017, ISO 4014, ANSI / ASME, ASTM, SAE, or customer drawings. The final standard should be confirmed with size, grade, finish, and inspection requirements.
What is the difference between full thread and partial thread hex bolts?
Full thread hex bolts have thread along most or all of the bolt length, while partial thread hex bolts include an unthreaded shank area. Full thread is often used where more thread engagement is needed, while partial thread can provide a stronger shear area in some assemblies.
Can Grade 8.8 carbon steel hex bolts be supplied with zinc plating?
Yes. Grade 8.8 carbon steel hex bolts can be supplied with zinc plating according to order requirement. Buyers should confirm white zinc or yellow zinc, coating thickness, salt spray requirement, and whether hydrogen embrittlement control is needed.
Are hot dip galvanized carbon steel hex bolts suitable for outdoor use?
Hot dip galvanized carbon steel hex bolts are commonly selected for outdoor steel structures and exposed environments. Buyers should confirm thread fit, matching galvanized nuts, washer finish, and coating thickness requirements before production.
Can XZ Fastener supply bolts together with nuts and washers?
Yes. Bolts can be supplied together with matching nuts and washers according to assembly requirement. Send the bolt size, nut grade, washer type, finish, and packing method so the full set can be checked before quotation.
What inspection can be arranged before shipment?
Inspection can include dimensions, thread gauge, hardness, tensile strength, proof load, head marking, surface finish, coating thickness, and packaging checks. Required inspection documents should be listed in the inquiry.
Send Your Carbon Steel Hex Bolt Inquiry
For a faster quotation, send your size list, finish, quantity, packaging, and inspection requirements. Please also include the standard, grade, thread type, matching nuts or washers, drawing files, and any test document requirements so XZ Fastener can review the complete order accurately.