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العربية DIN 933 hex cap screws factory
XZ Fastener manufactures DIN 933 hex cap screws for distributors, OEM buyers, equipment builders, and construction supply programs that need reliable metric full-thread hex fasteners. In many purchase orders, DIN 933 is also described as full thread hex bolts or metric hex head bolts, so the factory must confirm thread length, grade, material, finish, and packing before production. Carbon steel, alloy steel, and stainless steel options can be supplied according to order requirement, with practical inspection focused on dimensions, thread fit, head marking, coating quality, and shipment labeling.
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Quick Specs
| Стандарт | DIN 933 metric hex head screws and full-thread hex bolts |
|---|---|
| Strength | Common property classes include 4.8, 5.8, 8.8, 10.9, and 12.9; stainless A2-70 and A4-70 can be supplied according to order requirement |
| Материал | Carbon steel, medium carbon steel, alloy steel, stainless steel 304/A2, stainless steel 316/A4 |
| Finish | Plain, zinc plated, black oxide, hot dip galvanized, zinc flake, nickel plated, passivated stainless steel |
| Приложение | Machinery, brackets, construction hardware, steel fabrication, equipment assembly, maintenance stock, and general fastening |
Buyers can compare DIN 933 hex cap screws with other standard fasteners before confirming mixed bolt, nut, washer, and threaded rod requirements.
What Buyers Should Know Before Sourcing DIN 933 Hex Cap Screws
DIN 933 Means Full Thread
DIN 933 is normally used for metric hex head fasteners with full thread. Buyers sometimes call them hex cap screws, full thread hex bolts, or metric hex bolts. The wording can vary by market, but the factory order should still define the standard, diameter, pitch, length, grade, finish, and packing.
If the application requires partial thread, the buyer should check whether DIN 931 or another standard is more suitable. XZ Fastener can also help compare related industrial bolts before production.
Factory Control Should Match the End Use
A DIN 933 fastener used in a machine bracket does not face the same risk as one used outdoors on a steel frame. Buyers should confirm grade, coating, thread tolerance, washer contact face, and installation environment before asking for mass production.
For assemblies using matching nuts and washers, review industrial nuts and flat washers early so the complete joint is specified correctly.
Common Purchasing Descriptions
Clear descriptions help the factory quote, produce, inspect, and label the correct goods. Use separate line items for each size, grade, material, and finish.
| Purchasing Description | Typical Use | Buyer Note |
|---|---|---|
| DIN 933 full thread hex bolts, M10 x 40 mm, Class 8.8, zinc plated | General machinery and construction hardware | Confirm thread length is full thread |
| Grade 8.8 carbon steel hex bolts, DIN 933, M12 x 50 mm, plain finish | Fabrication and controlled indoor assembly | Confirm anti-rust protection for storage and shipping |
| Metric hex head bolts, DIN 933, M16 x 60 mm, Class 10.9, black oxide | Machinery and equipment assembly | Confirm hardness and surface oil requirement |
| Zinc plated DIN 933 bolts, M8 x 25 mm, Class 8.8 | Distributor stock and light-duty hardware | Confirm appearance, packing quantity, and carton label |
| Black oxide DIN 933 bolts, M10 x 30 mm, Class 12.9 | Indoor mechanical assemblies | Confirm rust prevention and installation torque practice |
| Hot dip galvanized DIN 933 bolts, M20 x 80 mm, Class 8.8 | Outdoor steelwork and exposed construction hardware | Confirm matching nut fit after galvanizing |
When product wording differs between markets, buyers can review the DIN and ISO fastener standards guide before confirming the final purchasing description.
Detailed Specifications Table
| Specification Item | Common Options | Factory Order Checkpoint |
|---|---|---|
| Стандарт | ГОСТ 933 | Confirm full-thread hex head fastener requirement |
| Diameter | M3 to M64 commonly requested; other sizes available upon request | Confirm diameter and pitch for each line item |
| Length | Common metric lengths according to order requirement | Check length from under the head to the bolt end |
| Thread | Metric coarse thread; metric fine thread available upon request | Confirm full thread and gauge inspection requirement |
| Strength | 4.8, 5.8, 8.8, 10.9, 12.9, A2-70, A4-70 | Match grade with material, heat treatment, and certificate |
| Head Style | Hexagon head | Confirm across-flat dimension, head height, and marking requirement |
| Finish | Plain, zinc plated, black oxide, hot dip galvanized, zinc flake, nickel plated, passivated | Confirm coating thickness, appearance, and post-finish thread fit |
| Packing | Cartons, bags, small boxes, pallets, or customer-labeled packing | Separate by size, grade, finish, batch, and item code |
Material and Grade Explanation
Carbon Steel and Alloy Steel
Class 4.8 and 5.8 DIN 933 hex cap screws are common for light-duty hardware and general assemblies. Grade 8.8 carbon steel hex bolts are widely used in machinery, brackets, and construction hardware where stronger mechanical performance is required.
Class 10.9 and 12.9 fasteners need closer control of material, heat treatment, hardness, and hydrogen embrittlement risk after plating. Buyers can compare related high-strength fasteners before confirming the grade.
Stainless Steel Options
A2 stainless steel is suitable for clean indoor and general corrosion-resistant applications. A4 stainless steel is preferred for coastal exposure, wet environments, and more aggressive corrosion conditions.
For stainless DIN 933 hex cap screws, buyers should confirm whether A2-70, A4-70, or another stainless class is required. Mixing stainless steel and carbon steel parts in the same unprotected package should be avoided.
Surface Finish Selection Guide
Finish selection affects corrosion resistance, appearance, thread fit, storage life, and installation behavior. The finish name should match the quotation, purchase order, label, and inspection report.
| Finish | Typical Use | Procurement Comment |
|---|---|---|
| Plain | Indoor fabrication, oil-protected stock, or parts for later coating | Needs rust protection for storage and sea freight |
| Zinc Plated | General hardware, equipment assembly, distributor stock | Common choice for clean appearance and moderate protection |
| Black Oxide | Machinery and indoor assemblies requiring dark appearance | Often requires oiling for better storage protection |
| Hot Dip Galvanized | Outdoor structures and exposed construction hardware | Confirm matching nut tolerance after galvanizing |
| Zinc Flake | Higher corrosion resistance with controlled coating build | Available upon request for defined project requirements |
| Passivated Stainless | Stainless steel bolts for clean or corrosive environments | Pack carefully to avoid surface contamination |
For finish comparison across product lines, buyers can review XZ Fastener’s coated fasteners before finalizing the order.
Manufacturing and Quality Control
DIN 933 hex cap screws are typically produced through wire preparation, cold heading or hot forging depending on size, thread rolling or machining, heat treatment when required, surface finishing, inspection, and packing. Factory control should be planned before mass production starts.
- Confirm material grade, wire rod source, and heat number when traceability is required.
- Check head dimensions, across-flat size, length, diameter, and thread pitch.
- Confirm full-thread length and functional thread fit with gauges or matching nuts.
- Inspect mechanical properties, hardness, and head marking for high-strength grades.
- Review coating thickness, appearance, corrosion protection, and post-coating assembly fit.
- Separate packing by size, grade, finish, batch, and customer item code.
- Verify carton labels, pallet marks, inspection reports, and shipment documents before delivery.
For non-standard lengths, special head marking, mixed packing, or project-specific labels, XZ Fastener can discuss the required customized service before production.
Приложения
Machinery and Equipment Assembly
DIN 933 hex cap screws are used in frames, brackets, covers, support plates, guards, and maintenance access points. Full thread is useful where the clamping range is short or the assembly needs flexible adjustment.
Construction and Industrial Supply
Distributors and contractors use DIN 933 bolts for steelwork, support hardware, pipe brackets, and general fastening. Buyers often combine them with nuts, washers, and other fastener products for complete supply packages.
How to Get a Faster Quotation
A complete inquiry helps the factory quote the correct DIN 933 fastener without repeated clarification. Send the information in a clean size list when possible.
- Standard: DIN 933 or drawing requirement if modified.
- Size: diameter, pitch, and length, such as M10 x 40 mm.
- Grade and material: 4.8, 8.8, 10.9, 12.9, A2-70, A4-70, or specified material.
- Finish: plain, zinc plated, black oxide, hot dip galvanized, zinc flake, nickel plated, or passivated.
- Quantity: pieces, cartons, pallets, or container quantity.
- Packing: carton quantity, small box packing, pallet marking, bar code label, or customer label.
- Inspection: material certificate, mechanical test, coating report, gauge check, or third-party inspection if required.
Часто задаваемые вопросы
What are DIN 933 hex cap screws?
DIN 933 hex cap screws are metric hex head fasteners with full thread. They are commonly described as DIN 933 full thread hex bolts or metric hex head bolts in purchasing documents.
What is the difference between DIN 933 and DIN 931?
DIN 933 normally refers to full-thread hex head fasteners, while DIN 931 is commonly used for partial-thread hex head bolts. Buyers should confirm which thread style the assembly requires.
Which grades are commonly supplied?
Common grades include 4.8, 5.8, 8.8, 10.9, and 12.9 for carbon or alloy steel. Stainless steel A2-70 and A4-70 can be supplied for corrosion-resistant applications.
Can DIN 933 bolts be hot dip galvanized?
Yes. Hot dip galvanized DIN 933 bolts can be supplied for outdoor and exposed applications. Buyers should confirm coating thickness and matching nut fit after galvanizing.
Can XZ Fastener supply matching nuts and washers?
Yes. Nuts and washers can be quoted as separate line items or packed according to order requirement. Buyers should define nut grade, washer type, finish, and packing method clearly.
What should buyers send for a factory quotation?
Buyers should send standard, size list, grade, material, finish, quantity, packaging method, inspection requirements, and any head marking or document requirements.
Send Your DIN 933 Hex Cap Screw Requirement
For a faster and more accurate quotation, send your size list, finish, quantity, packaging method, and inspection requirements. Include grade, material, thread pitch, certificate needs, head marking requirements, and whether matching nuts or washers are required.
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