T-Head Bolt AWWA C111 | COR-TEN Mechanical Joint T-Bolt & Heavy Hex Nut
AWWA C111 T-Head Bolt is purpose-designed for mechanical joint pipe connections where the distinctive hammer-shaped T-head slides into cast-iron socket recesses and locks under torque without requiring access to the back side of the joint. Manufactured to meet or exceed ANSI/AWWA C111/A21.11 composition specifications, each T-bolt is paired with a matching heavy hex nut to form a complete flange fastening set — the same configuration used worldwide in water treatment plants, marine sewage discharge systems, seawater intake piping, and onboard ballast water pipeline assemblies where flanged joints must be repeatedly tightened and retightened throughout vessel service life.
| Specification | Detail |
| Standard | ANSI/AWWA C111 / ANSI A21.11 (Mechanical Joint Fastener) |
| Bolt Type | T-Head Bolt / T-head bolt / T-bolt |
| Nut Type | Heavy Hex Nut (matching material grade) |
| Diameter Range | 5/8", 3/4", 1", 1-1/4" |
| Length Range | 3-1/2"– 11"(custom lengths available) |
| Materials | COR-TEN Steel (HSLA), SS304, SS316 |
| Optional Coating | Xylan 1424 (PTFE) coated, plain, HDG available |
| Variants | Standard T-Head, X-Long T-Head, Anti-Rotation T-Head |
| Key Applications | Mechanical joint flange sets, marine piping flanges, ballast water system (BWTS), seawater intake/discharge lines |
SINOFASTENER supplies T-head bolts in all four product configurations documented in the TF'USA catalog: Standard COR-TEN T-bolts & nuts, PTFE-coated variants using Xylan 1424 for enhanced chemical resistance, stainless steel SS304/SS316 options for saltwater exposure, and the specialized anti-rotation version that prevents bolt spin during nut tightening in restricted-access joint locations. Each mechanical joint bolt set can be packaged together with compatible MJ gaskets to provide a single-source flange kit solution. Full material traceability certificates and batch test reports are provided for every shipment.
Contact SINOFASTENER for Quotation
📧 Email: sales@sinofastener.com
🌐 Website: www.sinofastener.com
📍 Ningbo Zhonglian Fastener Manufacture Co., Ltd. — SINOFASTENER
