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العربية DIN 961 fine thread hex bolts bulk order manufacturer
XZ Fastener manufactures DIN 961 fine thread hex bolts for bulk orders that require full-thread metric fine pitch control, stable mechanical performance, and consistent packing across large production batches. These bolts are used in machinery, automotive assemblies, tapped holes, brackets, and equipment joints where the drawing calls for full-thread engagement with a fine pitch. Orders can be produced in carbon steel, alloy steel, or stainless steel, with finishes selected according to corrosion exposure and thread-fit requirements. Before production, buyers should confirm size, pitch, grade, finish, quantity, packaging, and inspection documents.
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Quick Specs
What Buyers Should Know Before Sourcing DIN 961 Fine Thread Hex Bolts
DIN 961 is a full-thread metric fine pitch hex bolt standard. It is often used when the entire threaded length is needed for engagement or adjustment. In bulk production, the main risk is not the hex head appearance. It is wrong pitch, inconsistent thread form, or coating buildup that prevents smooth assembly.
Before releasing a bulk order, compare the part description with the DIN and ISO fastener standards guide. The drawing, purchase order, inspection report, carton labels, and packing list should use the same size and pitch description.
Common Purchasing Descriptions
Bulk purchase programs often combine several metric hex bolt families. XZ Fastener can review descriptions that include 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, and hot dip galvanized DIN 933 bolts.
| Common Description | Bulk Order Checkpoint |
|---|---|
| DIN 961 M10 x 1.25 x 35 Class 8.8 zinc plated | Confirm full thread, fine pitch, plating color, carton quantity, and lot label |
| DIN 961 M12 x 1.25 x 50 Class 10.9 black oxide | Confirm heat treatment, head marking, black finish condition, and hardness report |
| DIN 961 fine thread bolts with matching nuts | Confirm nut pitch, nut grade, coating compatibility, and fit after finish |
| DIN 961 assorted bulk order manufacturer supply | Confirm size table, pieces per size, pallet layout, and inspection documents |
For related bulk supply, buyers can review XZ Fastener industrial bolts and standard fasteners.
Detailed Specifications Table
| Specification Item | Typical Options | Manufacturing Control Point |
|---|---|---|
| Standard | DIN 961 | Confirm full-thread fine pitch requirement before material release |
| Thread Type | Metric fine pitch, full thread | State exact pitch, such as M10 x 1.25, M12 x 1.25, or M16 x 1.5 |
| Diameter and Length | Common metric sizes according to order requirement | Measure length under head and confirm full threaded length |
| Strength Class | 8.8, 10.9, 12.9; other classes on request | Control raw material, heat treatment, tensile strength, proof load, and hardness |
| Material | Carbon steel, alloy steel, stainless steel A2 or A4 | Confirm material certificate and chemical composition if required |
| Finish | Plain, zinc plated, black oxide, hot dip galvanized, zinc flake, passivated | Check coating appearance, thickness requirement, and thread fit after finish |
| Bulk Packing | Bulk cartons, small boxes, export pallets, buyer labels | Confirm part number, carton quantity, lot number, gross weight, and pallet marks |
Material and Grade Explanation
Class 8.8 carbon steel is a common choice for industrial equipment and general machinery assemblies. Class 10.9 and 12.9 are used when higher tensile performance is needed, but these grades require suitable nuts, washers, tightening practice, and inspection records.
Stainless steel A2 and A4 can be supplied when corrosion resistance is more important than high tensile strength. A4 is usually preferred for wet, coastal, or chemical exposure. For demanding load conditions, buyers can compare XZ Fastener high-strength fasteners.
Surface Finish Selection Guide
| Finish | Bulk Production Use Case |
|---|---|
| Plain | Indoor use, oil protection, or parts requiring later surface treatment |
| Zinc Plated | General corrosion protection with clean appearance for stock items |
| Black Oxide | Machinery appearance requirement with light oil protection |
| Hot Dip Galvanized | Outdoor use where thicker corrosion protection is specified |
| Zinc Flake | Controlled corrosion performance with closer thread-fit management |
For coating-sensitive bulk orders, review available coated fasteners before confirming mass production.
Manufacturing and Quality Control
Bulk manufacturing requires repeatable control from raw material to final packing. A DIN 961 bolt batch should keep the same pitch, full-thread form, head marking, finish, and carton rule across all sizes and shipment lots.
- Review the size list, fine pitch, material, grade, finish, and packaging requirement.
- Confirm raw material and heat treatment route before production release.
- Control head forming, full-thread rolling, length under head, and thread pitch during production.
- Inspect dimensions, hardness, marking, coating appearance, and thread gauge result.
- Check bolt-nut fit after coating when matching nuts are included.
- Pack by size, carton quantity, lot number, buyer label, and pallet requirement.
When the order includes matched components, XZ Fastener can discuss compatible industrial nuts according to order requirement.
Applications
DIN 961 fine thread hex bolts are selected where full-thread engagement and fine pitch control are required. They should follow the assembly drawing or technical specification, not be substituted only by diameter and length.
- Machinery and equipment assemblies with tapped holes
- Automotive and transport components using metric fine pitch fasteners
- Brackets, covers, housings, and adjustment connections
- Flange and plate assemblies requiring full-thread engagement
- Distributor and project stock where exact pitch labeling is important
For broader sourcing, buyers can review XZ Fastener fastener products and related metric hardware.
How to Get a Faster Quotation
A bulk production quotation is faster when the request includes both technical and packing details. For DIN 961 bolts, each line item should show diameter, pitch, length, grade, finish, and quantity.
| Information Needed | Example |
|---|---|
| Size and Pitch | M10 x 1.25 x 35, M12 x 1.25 x 50, M16 x 1.5 x 60 |
| Material and Grade | Class 8.8 carbon steel, Class 10.9 alloy steel, A4 stainless steel |
| Finish | Plain, zinc plated, black oxide, hot dip galvanized, zinc flake |
| Quantity | Pieces per size, shipment batch, container load, or annual demand |
| Packaging | Bulk carton, small box, export pallet, buyer label, barcode if required |
| Inspection Requirements | Dimensional report, thread gauge record, hardness test, material certificate |
Send drawings, size lists, packing instructions, and document requirements through contact XZ Fastener for manufacturing review.
FAQ
What is DIN 961 fine thread hex bolt used for?
DIN 961 fine thread hex bolts are used in assemblies requiring full-thread metric fine pitch engagement, including machinery, automotive parts, brackets, housings, and tapped-hole applications.
How is DIN 961 different from DIN 960?
DIN 961 is generally used for full-thread fine pitch hex bolts. DIN 960 is used for fine pitch hex bolts with a shank or partial thread. Buyers should confirm the drawing requirement before ordering.
Can DIN 961 bolts be produced with matching nuts?
Yes. Matching fine-thread nuts can be supplied when the pitch, nut standard, nut grade, finish, and packing method are confirmed with the bolt order.
Can DIN 961 bolts be hot dip galvanized?
Hot dip galvanized finish can be supplied when specified, but fine thread fit must be checked carefully after coating. Matching nuts should be confirmed at the same time.
What inspection items matter most for bulk DIN 961 orders?
Important inspection items include diameter, length under head, fine pitch, full-thread form, head dimensions, grade marking, hardness, finish appearance, coating requirement, and nut fit when applicable.
What should buyers send for a bulk order quotation?
Send the size list, exact fine pitch, strength class, material, finish, quantity per size, packaging method, and inspection documents needed before shipment.
Send Your DIN 961 Bulk Order Requirement
For accurate manufacturing review, send your DIN 961 fine thread hex bolt size list, finish, quantity, packaging method, and inspection requirements. Include matching nuts, carton labels, pallet marks, drawings, destination details, and any document requirements needed for your warehouse or project supply process.
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