Square head bolts are threaded fastener with a square-shaped head, consisting of a head and a threaded shank. It complies with standards such as DIN, BS, GOST, JIS, CNS, and ASME/ANSI.
The square head design allows easy use with a wrench or socket, providing greater torque transmission. It is used with a nut to fasten and secure two components with through holes.
Specifications
- Metric: M5 to M48.
- Imperial: 1/4″ to 6″.
- Thread Types: UNC, UNF, BSW, ACME, Full thread, Partial thread.
- Strength: Grade 4.6，6.8，8.8，10.9，12.9 grade; A2-70, A2-80, A4-70, A4-80.
- Standard: DIN, JIS, GB, GOST.
- Packaging: Plastic Box, Carton, Pallet, or Custom Packaging Service
Square Head Bolt Materials
- Carbon Steel
- Stainless Steel
- Alloy Steel
- Titanium Alloy
- Aluminum Alloy
- Copper Alloy
- Plastic
Surface Treatments
- Zinc Plating
- Hot-Dip Galvanizing
- Dacromet
- Geomet
- Black Oxide
- Nickel Plating
- Teflon Coating
- Powder Zinc Coating
Square Head Bolt Standards
| GB/T 8 | DIN 478 | BS 916 | GOST 21249 |
| GB/T 35 | JIS B 1182 | NF E 25-117 | JIS E 1107 |
| UNI 5729 | ASME/ANSI B 18.2.1 | NF E 25-116 | NF E 25-118 |
Applications
- Railway
- Bridge Construction
- Furniture Manufacturing
- Petrochemical Industry
- Drilling Operations
- Automotive Industry
- Shipbuilding
- Machinery and Equipment