Tiếng Việt 
English 
Español 
Русский 
العربية ISO 7042 all metal lock nuts factory
XZ Fastener manufactures ISO 7042 all metal lock nuts for buyers who need prevailing torque locking performance without a nylon insert. These metric all-metal lock nuts are used in machinery, equipment frames, vehicles, agricultural assemblies, rail-related hardware, and other applications where vibration resistance and higher temperature suitability may be required. Carbon steel, alloy steel, and stainless steel options can be supplied with property class, thread pitch, finish, packing, and inspection requirements according to order requirement. Buyers can send size lists, mating bolt details, coating requirements, application notes, and quantity plans for factory quotation review.
Quick Specs
What Buyers Should Know Before Sourcing ISO 7042 All Metal Lock Nuts
ISO 7042 all metal lock nuts are prevailing torque hex nuts that create locking action through an all-metal deformed thread area instead of a non-metallic insert. They are often chosen for vibration-prone assemblies or temperature conditions where nylon insert nuts may not be suitable. Buyers should confirm thread pitch, mating bolt grade, prevailing torque requirement, finish, and installation method before production.
These nuts are commonly ordered with other standard fasteners for machinery, vehicle, and equipment projects. They should not be described as nylon insert lock nuts because installation behavior, torque values, and reuse expectations are different.
Factory Sourcing Notes
- Confirm metric size, pitch, property class, lock type, and finish before quotation.
- State mating bolt grade, coating, lubrication condition, and assembly environment.
- Check whether prevailing torque testing or thread gauge inspection is required.
- Define carton quantity, label format, lot marking, and inspection documents before production.
Common Purchasing Descriptions
Buyers may describe this product as ISO 7042 all metal lock nuts, ISO 7042 prevailing torque nuts, metric all-metal self-locking nuts, distorted thread lock nuts, top lock nuts, or all-metal hex lock nuts. For accurate quotation, provide size, pitch, property class, material, finish, quantity, packing method, and any torque testing requirement.
Factory purchasing lists often include matching bolts and nuts in the same order. Along with ISO 7042 all metal lock nuts, buyers may request 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. Related industrial bolts can be quoted together when mating components are needed.
Detailed Specifications Table
| Item | Typical Requirement | Procurement Notes |
|---|---|---|
| Standard | ISO 7042 | All metal prevailing torque type hexagon nuts; confirm standard version or drawing requirement. |
| Thread | Metric coarse thread, selected fine thread options | Pitch must be stated clearly for fine thread, special thread, or drawing-based orders. |
| Size Range | Common metric nut sizes such as M3 to M24 | Other sizes can be reviewed according to order requirement and production availability. |
| Property Class | Common classes 5, 8, 10; stainless options | Nut strength should be matched with mating bolt class and assembly load. |
| Locking Method | All-metal prevailing torque locking area | Useful for applications where non-metallic inserts are not preferred. |
| Material | Carbon steel, alloy steel, stainless steel | Material selection depends on strength, corrosion exposure, temperature, and cost target. |
| Finish | Zinc plated, black oxide, plain, phosphate, passivated stainless | Finish and lubrication can influence installation torque and should be specified. |
| Packing | Small boxes, bulk cartons, export cartons, pallet packing | Barcode labels, buyer item labels, carton marks, and lot separation are available upon request. |
For special thread, modified dimensions, buyer-specific packing, or drawing-based all-metal lock nuts, XZ Fastener can review custom fasteners according to drawings and order requirement.
Material and Grade Explanation
Carbon Steel and Alloy Steel
Carbon steel and alloy steel ISO 7042 all metal lock nuts are used where mechanical strength, vibration resistance, and controlled installation behavior are required. Property classes such as 5, 8, and 10 can be discussed according to mating bolt grade and application requirement. Heat treatment, thread accuracy, locking deformation, and finish control should be checked during production.
Stainless Steel Options
Stainless steel all-metal lock nuts are used for moisture-exposed equipment, light outdoor assemblies, and applications where corrosion resistance matters. A2 and A4 options can be reviewed upon request. Buyers should confirm temperature, corrosion exposure, thread galling concerns, and whether passivation or special packing is required.
When selecting ISO 7042 nuts with other fastener products, buyers should compare bolt grade, thread engagement, locking performance, working temperature, surface finish, and installation tooling.
Surface Finish Selection Guide
| Finish | Typical Use | Buyer Consideration |
|---|---|---|
| Zinc Plated | General machinery, equipment frames, and distributor stock | Common for carbon steel nuts; coating thickness and lubrication condition should be confirmed. |
| Black Oxide | Indoor machinery, tools, fixtures, and dark appearance assemblies | Usually requires oil protection; storage and packing conditions should be considered. |
| Phosphate | Industrial assemblies requiring oil retention | Often paired with protective oil; installation torque should be reviewed if required. |
| Plain Steel | Controlled indoor use or secondary finishing | Corrosion protection is limited; packing and storage conditions are important. |
| Plain or Passivated Stainless | Stainless assemblies and moisture-exposed equipment | Passivation can be requested for improved surface cleanliness and consistency. |
For orders that combine all-metal lock nuts with plated bolts, washers, or special hardware, XZ Fastener can also supply coated fasteners according to project requirement.
Manufacturing and Quality Control
Factory control for ISO 7042 all metal lock nuts should cover raw material selection, nut forming, tapping, heat treatment when applicable, all-metal locking deformation, surface finishing, thread inspection, prevailing torque checks, sorting, and final packing. Important inspection points include across-flats dimension, nut height, thread fit, deformed locking area, hardness, coating appearance, prevailing torque behavior, and packing accuracy.
Because all-metal lock nuts rely on controlled thread deformation, buyers should define whether prevailing torque testing, thread gauge inspection, hardness records, coating inspection, or lot-based packing verification is required. The DIN and ISO fastener standards guide can help purchasing teams confirm standard references before placing factory orders.
Applications
- Machinery frames, guards, covers, and structural brackets
- Automotive, trailer, railway-related, and general vehicle assemblies
- Conveyor systems, agricultural equipment, and vibration-prone structures
- High-temperature areas where nylon insert lock nuts may not be suitable
- Maintenance kits, factory assembly programs, and distributor stock
ISO 7042 all metal lock nuts are commonly paired with metric bolts and washers in assemblies exposed to vibration or elevated temperature. When matching parts are needed, XZ Fastener can also quote related flat washers and other industrial nuts for complete purchasing lists.
How to Get a Faster Quotation
To receive a faster quotation, send diameter, pitch, property class, material, finish, quantity per size, mating bolt grade, locking torque requirement if any, packing method, carton quantity, label format, and inspection document requirements. If the nuts are used in vibration-sensitive or higher-temperature assemblies, include application notes and any torque testing requirement.
For non-standard thread, special locking deformation, buyer-specific packing, or combined bolt and nut sets, XZ Fastener’s customized service can review the inquiry according to drawing and order requirement. Buyers can contact XZ Fastener with a size list and quantity plan for factory quotation support.
FAQ
What is an ISO 7042 all metal lock nut?
It is a metric all-metal prevailing torque nut that creates locking action through a controlled deformed thread area instead of a nylon insert.
When should buyers choose ISO 7042 instead of nylon insert lock nuts?
ISO 7042 all metal lock nuts may be preferred where higher temperature, all-metal construction, or insert-free locking is required. The final choice should match the assembly design and service environment.
Can ISO 7042 lock nuts be supplied in carbon steel?
Yes. Carbon steel and alloy steel options can be supplied in property classes such as 5, 8, and 10 according to size, finish, and order requirement.
Are stainless steel ISO 7042 all metal lock nuts available?
Stainless steel options such as A2 and A4 can be reviewed upon request. Buyers should confirm corrosion exposure, thread galling concerns, and packing requirements.
Can ISO 7042 all metal lock nuts be reused?
Prevailing torque may change after repeated installation. Reuse should be evaluated according to the application, thread condition, locking performance, and buyer inspection requirement.
What information should be sent for factory quotation?
Please send size, pitch, property class, material, finish, quantity, packing method, mating bolt details, torque requirement if any, and inspection requirements.
Send Your ISO 7042 All Metal Lock Nuts Inquiry
For a faster quotation, send your size list, finish, quantity, packaging, and inspection requirements. Please include material grade, property class, thread pitch, mating bolt details, carton quantity, label format, torque or locking performance requirements, and any inspection documents needed for factory review.
contact XZ Fastener