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Русский DIN 603 carriage bolts bulk order manufacturer
XZ Fastener supports bulk order manufacturing of DIN 603 carriage bolts for distributors, construction hardware buyers, OEM assembly plants, and project supply programs. DIN 603 bolts feature a smooth round head, square neck, and metric thread, making them suitable for timber, fencing, guardrail, bracket, and light steel applications. For accurate bulk purchasing, buyers should confirm size list, thread length, material, strength class, finish, nut and washer matching, packing method, carton marks, and inspection documents before production.
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Quick Specs
What Buyers Should Know Before Sourcing DIN 603 Carriage Bolts
DIN 603 carriage bolts are selected when the exposed side needs a smooth round head and the nut side handles tightening. The square neck below the head is intended to seat into wood, soft material, or a prepared square hole so the bolt does not rotate.
For bulk orders, buyers should not specify only diameter and length. The head diameter, head height, square neck width, neck depth, thread length, and finish all affect fit. If the same order includes industrial bolts, keep DIN 603 carriage bolts separate from metric hex head bolts and DIN 933 full thread hex bolts in both the RFQ and packing list.
Common Purchasing Descriptions
Clear descriptions help production, inspection, and packing teams work from the same requirement. Typical bulk order wording includes:
- DIN 603 carriage bolt, M8 x 60, Class 4.8, zinc plated, supplied with nut and washer.
- DIN 603 round head square neck bolt, M10 x 80, Class 8.8, hot dip galvanized, bulk carton packing.
- DIN 603 carriage bolt, M12 x 100, stainless steel A2-70, passivated finish, export pallet packing.
- DIN 603 carriage bolts, mixed metric sizes, zinc plated, barcode label and dimensional report required.
For wider sourcing programs, buyers can review XZ Fastener’s fastener products and related standard fasteners.
Detailed Specifications Table
| Specification Item | Typical Bulk Order Requirement | Buyer Checkpoint |
|---|---|---|
| نوع المنتج | DIN 603 carriage bolts, round head square neck type | Confirm DIN 603 standard and any drawing-based changes. |
| نطاق الحجم | Common metric sizes such as M5 to M20; other sizes according to order requirement. | Provide diameter, length, thread pitch, and thread length for each line item. |
| Head and Neck | Smooth round head with square neck below the head | Check head diameter, head height, square neck width, and neck depth. |
| Thread | Metric coarse thread is common; partial thread is typical for many sizes. | State if full thread or a special thread length is required. |
| Strength Class | 4.6, 4.8, 8.8; stainless A2-70 or A4-70 | Match strength class with nut grade, washer use, and connected material. |
| إنهاء السطح | Plain, zinc plated, black oxide, hot dip galvanized, zinc flake, passivated stainless | Choose finish according to corrosion exposure, assembly fit, and appearance requirement. |
| Inspection Documents | Material certificate, dimensional report, hardness report, tensile report, coating report upon request | Confirm documentation before purchase order release. |
| Packing | Bulk carton, small box, bag set, barcode label, export pallet | Define carton weight, label format, item code, batch number, and mixed-carton rules. |
Material and Grade Explanation
Class 4.6 and 4.8 carbon steel carriage bolts are common for fencing, timber, furniture, light brackets, and general construction hardware. They are practical where the joint does not require a high-tensile bolt.
Class 8.8 can be supplied for stronger assemblies, but the connected material, square neck seating, nut grade, and washer choice should be reviewed. Stainless A2-70 and A4-70 are used where corrosion resistance is required.
When a bulk shipment includes Grade 8.8 carbon steel hex bolts or other high-strength fasteners, use separate item codes for DIN 603 carriage bolts to avoid receiving and warehouse mix-ups.
Surface Finish Selection Guide
| Finish | Typical Bulk Order Use |
|---|---|
| Zinc Plated | Common for indoor hardware, brackets, furniture, and distributor stock. |
| Black Oxide | Used for appearance-focused machinery parts where light corrosion protection is acceptable. |
| Hot Dip Galvanized | Used for outdoor fencing, guardrails, timber structures, and exposed construction hardware. |
| Zinc Flake | Selected where improved corrosion resistance and controlled coating thickness are specified. |
| Passivated Stainless | Used for stainless carriage bolts in wet, outdoor, or mildly corrosive environments. |
For finish planning across item groups, buyers can review XZ Fastener’s coated fasteners. Zinc plated DIN 933 bolts, black oxide DIN 933 bolts, and hot dip galvanized DIN 933 bolts should be listed separately from carriage bolts even when shipped together.
Manufacturing and Quality Control
Bulk manufacturing of DIN 603 carriage bolts requires repeatable control from raw material to final pallet. The round head must form cleanly, the square neck must hold its shape, and the thread must pass fit checks after coating.
Key Control Points
- Review DIN 603 size list, material, grade, finish, packing method, and inspection requirement.
- Confirm raw material grade and heat number traceability when required.
- Control round head diameter, head height, square neck width, and square neck depth.
- Verify thread pitch, thread length, go/no-go gauge fit, and burr condition.
- Apply heat treatment according to the specified property class where applicable.
- Check surface finish appearance, coverage, adhesion, and thread function after coating.
- Pack by item code, size, grade, finish, and batch number for bulk receiving control.
For non-standard neck dimensions, special markings, or drawing-based parts, XZ Fastener can review requirements through its customized service. Buyers comparing metric references can also use the DIN and ISO fastener standards guide.
تطبيقات
DIN 603 carriage bolts are used where a smooth exposed head, anti-rotation neck, and nut-side tightening are useful. Common applications include:
- Wood-to-metal joints and timber construction.
- Fencing, gates, guardrails, and outdoor hardware.
- Furniture, racks, brackets, and light steel components.
- Trailer hardware, agricultural equipment, and maintenance stock.
- Bulk distributor programs for metric carriage bolts in multiple sizes and finishes.
How to Get a Faster Quotation
Bulk order quotation is faster when the RFQ includes technical details, packing rules, and inspection requirements at the same time. This reduces repeated confirmation and helps avoid wrong-spec production.
| Information Needed | Example or Note |
|---|---|
| Size List | M6 x 40, M8 x 60, M10 x 80, M12 x 100, with thread length if critical. |
| Material and Grade | Class 4.8 carbon steel, Class 8.8 carbon steel, A2-70 stainless, A4-70 stainless. |
| Finish | Zinc plated, hot dip galvanized, black oxide, zinc flake, plain, or passivated stainless. |
| Nut and Washer Matching | Bolt only, or supplied as a set with industrial nuts and flat washers. |
| كمية | Pieces per size, carton quantity, annual demand, shipment schedule, or container order plan. |
| Packing | Bulk cartons, small boxes, bag sets, barcode labels, pallet requirement. |
| Inspection | Dimensional report, material certificate, hardness report, tensile report, coating report. |
For order review, buyers can contact XZ Fastener with drawings, samples, photos, or an itemized purchasing sheet.
أسئلة متكررة
What is a DIN 603 carriage bolt?
It is a metric round head square neck bolt. The smooth round head sits on the exposed side, while the square neck helps prevent rotation during nut tightening.
Can DIN 603 carriage bolts be supplied with nuts and washers?
Yes. They can be supplied as bolts only or packed as sets with compatible nuts and washers according to order requirement.
Which grades are common for bulk orders?
Class 4.6 and 4.8 are common for general hardware and construction use. Class 8.8 can be selected for stronger assemblies. Stainless A2-70 and A4-70 are available when corrosion resistance is required.
Which finish is suitable for outdoor use?
Hot dip galvanized, zinc flake, or stainless steel may be used depending on exposure level, assembly fit, and buyer specification. Zinc plated carriage bolts are usually more suitable for indoor or light-duty use.
Why is the square neck dimension important?
The square neck must seat correctly in the mating material or hole. If it is too loose, the bolt may spin during tightening. If it is too large, installation can damage the connected part.
What details are needed for a bulk order quotation?
Please send the size list, material, strength class, finish, quantity, nut and washer requirement, packaging method, and inspection document requirements.
Send Your DIN 603 Bulk Order Inquiry
Send your DIN 603 carriage bolt size list, finish, quantity, packaging method, nut and washer requirement, and inspection requirements. XZ Fastener can review bulk orders together with related DIN 933 full thread hex bolts, Grade 8.8 carbon steel hex bolts, metric hex head bolts, zinc plated DIN 933 bolts, black oxide DIN 933 bolts, hot dip galvanized DIN 933 bolts, and other industrial fasteners according to order requirement.
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