Stainless Steel Hexagon Backnut
Useful Information
Technical Specification
- Material: Stainless Steel - CF8M (316)
- Connection Type: Hexagon backnut (lock nut)
- Standard: ISO 4144
- Thread Type: BSPP (ISO 228)
- Thread Gender: Female
- Operating Temperature Range: -20°C to +260°C
- Maximum Working Pressure: 20 bar
- Available Sizes: ⅛" to 4"
- Manufacturing Standard: ASTM A-351
Description
Engineered for use as a securing or locking component, this hexagon backnut provides a reliable means of fastening threaded fittings, unions, or flanges in place. Constructed from corrosion-resistant 316 stainless steel (CF8M), it offers long-term durability in demanding environments. The BSPP parallel female thread ensures accurate alignment and compatibility, while the hexagonal profile allows for straightforward tightening using standard tools. Ideal for mechanical restraint and position-locking in fluid and gas systems.
Key Features & Benefits
- Designed for securely locking threaded components in place
- BSPP female threads ensure compatibility with standard fittings
- 316 stainless steel construction offers high corrosion resistance
- ISO 4144 and ASTM A-351 compliant for quality and reliability
- Operates in temperatures from -20°C to +260°C
- Suitable for industrial, chemical, marine, and food-grade applications
- Hexagonal shape allows easy installation and removal with tools
- Available in a wide range of sizes to suit varied pipe systems
| Nominal Diameter (inch) | A (mm) | B (mm) | Weight (kg) |
| ⅛ | 6 | 18 | 0.007 |
| ¼ | 6.15 | 21 | 0.011 |
| ⅜ | 7.15 | 26 | 0.021 |
| ½ | 8 | 31 | 0.03 |
| ¾ | 9 | 35 | 0.036 |
| 1 | 10 | 45 | 0.065 |
| 1¼ | 11 | 54 | 0.103 |
| 1½ | 12 | 59 | 0.112 |
| 2 | 13 | 74 | 0.203 |
| 2½ | 16 | 93.5 | 0.387 |
| 3 | 19 | 106 | 0.5 |
| 4 | 23 | 134 | 0.924 |
If you require any further information, our excellent customer service team is here to help so please call us on 01794 835835.
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