AS1252 High Strength Steel Hex Nuts Manufacturer In China
Ningbo Teng Qi Fasteners Co., Ltd is a leading AS1252 hex nuts manufacturer in China. AS1252 heavy hex nuts are designed to be used with AS1252 bolts of corresponding strength grades. These nuts have a larger and thicker profile compared to regular hex nuts, providing better load distribution and improved resistance to loosening in high-stress applications. They are commonly used in construction, mining, and industrial settings where strong and reliable fastening is required.
Specification of AS1252 Hex Nuts:
| Product name | AS1252 HEX NUT |
|---|---|
| Diameter | M12-M36 |
| Thread | Metric Thread |
| Class | 8 |
| Manufacturing Process | wire drawing, cold heading/hot forging, thread rolling, heat treatment, surface treatment |
| Surface treatment | plain or hdg |
| Application Industry | Construction/Machinery/Automotive/Infrastructure/Electrical and Electronics/Furniture/Marine and Offshore |
Mechanical properties of AS1252 Nuts:
| Thread D | Class 8 AS1252 Hex Nuts Hardness |
|---|---|
| M5 ≤ D ≤ M16 | 200-302 HV |
| M16 < D ≤ M39 | 233-353 HV |
| M5 ≤ D ≤ M16 | 190-287 HB |
| M16 < D ≤ M39 | 221-336 HB |
| M5 ≤ D ≤ M16 | 30(max) HRC |
| M16 < D ≤ M39 | 36(max) HRC |
Chemical Composition:
| Property class | Material and heat treatment | Chemical composition limits (cast analysis, %) a |
|||
|---|---|---|---|---|---|
| C (max) | Mn (min) | P (max) | S (max) | ||
| 8 Regular nut (style 1) D ≤ M16 | Carbon steel | 0.58 | 0.25 | 0.06 | 0.15 |
| 8 Regular nut (style 1) D > M16 | Carbon steel (quenched and tempered) | 0.58 | 0.30 | 0.048 | 0.058 |
Click to check detailed information of AS1252 hex nuts:
AS1252 hex nut dimension chart
Surface treatment:
Surface finish Unless otherwise specified, high-strength steel bolts shall be supplied, hot-dip galvanized in accordance with AS 1214. Uncoated bolts shall be in the dull black as heat-treated condition.
Manufacturing Quality Control of AS1252 Hex Nuts:
In a world where connections matter, Ningbo Teng Qi Fasteners is more than just a fasteners supplier and manufacturer. We are architects of stability, builders of relationships, and champions of your success. From skyscrapers that reach for the sky to machines that power industries, our fasteners form the backbone of progress. When you choose Ningbo Teng Qi Fasteners, you choose unwavering quality, exceptional service, and a partner who understands that every bolt holds a piece of your vision.
| Control Method | Detail |
|---|---|
| Material Inspection: | Verify the material's composition, heat treatment, and quality upon receipt. Conduct metallurgical analysis to ensure the material properties meet the standards. |
| Process Control: | Implement strict process control measures for heat treatment, machining, threading, and any other manufacturing steps. Maintain consistent process parameters to ensure uniform quality. |
| Inspection Points: | Introduce inspection points at various stages of manufacturing to check for defects, dimensions, and quality. Inspect threading, dimensions, surface finish, and other critical parameters. |
| Sampling and Testing: | Regularly sample products for testing, such as tensile testing, hardness testing, and metallurgical analysis, to ensure they meet the required specifications. |
| Thread Inspection: | Thoroughly inspect threading using proper thread gauges to ensure accurate dimensions and fit with mating components. |
| Traceability: | Implement a traceability system to track each fasteners journey from raw material to final product. This aids in accountability and recalls if necessary. |