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العربية DIN 933 Grade 10.9 hex bolts supplier
XZ Fastener supplies DIN 933 Grade 10.9 hex bolts for buyers who need full-thread metric bolts with higher tensile strength than common Grade 8.8 carbon steel hex bolts. These fasteners are used in machinery, equipment frames, steel structures, fixtures, and load-bearing assemblies where bolt grade, thread fit, and finish must be confirmed before purchase. DIN 933 full thread hex bolts can be supplied in selected metric sizes, coatings, and packaging according to order requirement, with inspection items discussed before production.
Quick Specs
What Buyers Should Know Before Sourcing DIN 933 Grade 10.9 Hex Bolts
Confirm full thread and standard reference
DIN 933 refers to full-thread hex head bolts, while DIN 931 is normally used for partial-thread bolts. If your assembly needs continuous thread engagement, confirm DIN 933 or ISO 4017 on the drawing. Buyers can compare related DIN 933 ISO 4017 high tensile hex bolts before placing an inquiry.
Review Grade 10.9 working conditions
Grade 10.9 bolts are selected for higher strength applications, but the right choice still depends on joint design, nut grade, washer hardness, tightening method, and service environment. When replacing Grade 8.8 carbon steel hex bolts with Grade 10.9, confirm preload and mating parts instead of changing grade alone.
Coating selection needs extra care
For high-strength metric hex head bolts, surface treatment must be reviewed together with hydrogen embrittlement risk, coating thickness, and thread fit. XZ Fastener’s guide on zinc plating and hydrogen embrittlement risk is useful when zinc plating is requested for Grade 10.9 bolts.
State inspection requirements early
Procurement teams should list dimensional inspection, hardness, tensile testing, thread gauge checks, coating thickness, packaging, and document requirements in the RFQ. For non-standard dimensions or drawing-controlled parts, XZ Fastener can discuss custom fasteners according to order requirement.
Common Purchasing Descriptions
Different buyers may describe the same product in several ways. Clear wording reduces quotation delays and helps confirm grade, finish, and inspection scope.
- DIN 933 Grade 10.9 hex bolts, full thread, metric coarse thread
- DIN 933 full thread hex bolts, ISO 4017 equivalent discussion available
- High tensile metric hex head bolts, property class 10.9
- Zinc plated DIN 933 bolts, subject to high-strength coating risk review
- Black oxide DIN 933 bolts for oiled assemblies and dark appearance requirements
- Hot dip galvanized DIN 933 bolts where coating thickness and thread fit are confirmed
- Grade 8.8 carbon steel hex bolts comparison samples for lower-strength assemblies
For broader product matching, buyers can browse XZ Fastener’s fastener products, including bolts, nuts, washers, screws, and related industrial fastening parts.
Detailed Specifications Table
| Item | Typical Supply Information | Procurement Notes |
|---|---|---|
| Product | DIN 933 Grade 10.9 full-thread hex head bolts | Confirm if the order requires DIN 933, ISO 4017, or drawing reference. |
| Size Range | Common metric diameters and lengths can be supplied after order review | Provide diameter, length, pitch, thread direction, and quantity for each size. |
| Thread | Metric full thread, coarse thread commonly requested | Fine thread or special pitch should be shown clearly on the drawing. |
| Strength Class | Property class 10.9 | Mechanical properties should be checked according to applicable standard and size. |
| Material | Heat-treated alloy steel or suitable carbon steel according to requirement | Material selection depends on grade, size, heat treatment, and buyer specification. |
| Finish | Plain, black oxide, phosphate, zinc flake, selected zinc plated or HDG options | High-strength bolts require careful finish selection and process confirmation. |
| Quality Control | Dimensions, thread gauge, hardness, surface, coating, packaging | Mechanical test report or third-party inspection can be discussed before order. |
| Packaging | Bulk cartons, small boxes, pallets, or buyer-specified packaging | State carton weight limit, label format, barcode, pallet size, and moisture protection. |
Material and Grade Explanation
DIN 933 Grade 10.9 hex bolts are high tensile fasteners with a higher property class than Grade 8.8. They are generally used where the joint requires higher preload capacity, subject to proper joint design and tightening control. The bolt grade should not be selected by strength alone; nut grade, washer hardness, clamped material, vibration, and corrosion exposure should also be reviewed.
For buyers comparing Grade 8.8, 10.9, and 12.9 bolts, the ISO 898-1 bolt grades guide gives practical background on mechanical properties. If a previous order used Grade 8.8 carbon steel hex bolts, confirm whether the assembly design permits a Grade 10.9 substitution.
Surface Finish Selection Guide
Plain, Black Oxide, and Phosphate
Plain, black oxide, and phosphate finishes are often used for controlled indoor assemblies, especially where heavy coating buildup is not wanted. Black oxide DIN 933 bolts normally require oil or additional protection if corrosion exposure is expected.
Zinc Plating
Zinc plated DIN 933 bolts are common for lower and medium strength applications, but Grade 10.9 requires a careful process discussion. If zinc plating is requested, ask about embrittlement control, baking, coating thickness, and acceptance criteria before production.
Hot Dip Galvanizing
Hot dip galvanized DIN 933 bolts may be requested for outdoor steelwork, but thick coating changes thread fit and may not suit every Grade 10.9 application. Buyers can compare options in the zinc plated vs hot dip galvanized bolts guide.
Zinc Flake and Dacromet-Type Coatings
Zinc flake coatings are often considered for high-strength bolts when corrosion resistance is needed without electroplating. Confirm coating system, color, thickness, coefficient of friction, and salt spray requirement. The fastener coating guide can help compare common surface treatments.
Manufacturing and Quality Control
Manufacturing usually includes material review, cold heading or hot forging depending on size, thread rolling, heat treatment, surface treatment, sorting, and final packing. For Grade 10.9 bolts, heat treatment control is especially important because hardness, tensile performance, and thread strength must align with the required property class.
Quality control can include across-flats dimension, head height, shank and thread length, pitch, chamfer, surface appearance, hardness, tensile test, proof load, and coating thickness. Thread fit should be checked after coating, especially for zinc plated DIN 933 bolts and hot dip galvanized DIN 933 bolts. XZ Fastener’s Go/No-Go thread gauge testing guide explains a practical inspection method for bolts, nuts, and screws.
Applications
- Machinery manufacturing, equipment installation, and repair programs
- Steel frames, brackets, fixtures, and support structures
- Conveyors, automation equipment, lifting-related fixtures, and industrial tools
- Vehicle and equipment components where high tensile metric hex head bolts are specified
- Outdoor or corrosive environments when a suitable coating and inspection plan are confirmed
When the buyer is uncertain whether DIN 933 or DIN 931 is correct, this DIN 933 vs DIN 931 full-thread and partial-thread guide can help clarify the basic difference before the RFQ is sent.
How to Get a Faster Quotation
Send a clear size list with diameter, length, pitch, grade, finish, quantity, packaging method, delivery destination, and inspection requirements. If the bolts must match a drawing, previous purchase record, or assembly sample, include those files with the inquiry. Buyers can request a quote or contact XZ Fastener for DIN 933 Grade 10.9 hex bolts and related metric fasteners.
FAQ
Can DIN 933 Grade 10.9 hex bolts be supplied with full thread?
Yes. DIN 933 is a full-thread hex head bolt standard. Provide the metric size, length, pitch, quantity, finish, and inspection requirements for quotation review.
What is the difference between Grade 8.8 and Grade 10.9 hex bolts?
Grade 10.9 bolts have a higher mechanical property class than Grade 8.8 bolts. The correct selection depends on the joint design, tightening method, mating nut, washer, and service conditions.
Is zinc plating suitable for Grade 10.9 bolts?
Zinc plating can be discussed, but high-strength bolts require careful review of hydrogen embrittlement risk, baking, process control, and inspection criteria. Zinc flake coating may also be considered depending on the application.
Can hot dip galvanizing be used on DIN 933 Grade 10.9 bolts?
Hot dip galvanizing should be reviewed case by case because coating thickness affects thread fit and high-strength applications may have additional restrictions. The mating nut and thread allowance should be confirmed before order.
What inspection documents can be requested?
Buyers may request dimensional inspection, hardness results, mechanical test report, coating thickness report, thread gauge check, packing list, and third-party inspection documents when required.
Can XZ Fastener supply matching nuts and washers?
Matching nuts and washers can be discussed according to order requirement. The buyer should provide the bolt grade, finish, assembly condition, and any standard or drawing references.
Send Your DIN 933 Grade 10.9 Hex Bolt Inquiry
For a faster response, send your size list, finish, quantity, packaging method, and inspection requirements. XZ Fastener can review DIN 933 full thread hex bolts, Grade 10.9 metric hex head bolts, zinc plated DIN 933 bolts, black oxide DIN 933 bolts, hot dip galvanized DIN 933 bolts, and related high tensile fasteners according to order requirement.
Request a quote or contact XZ Fastener with your drawing, purchase list, or project specification.