Energy Bolting

Energy Bolting manufactures First Level fasteners in accordance with the latest issue of DEF STAN 02-862 Part 3, covering both metric and unified thread series.

We supply the full range of submarine-grade carbon and alloy steel fasteners as defined in the standard:

SM1 – For zinc-plated fasteners used below 60°C

SM2 – For unplated fasteners used below 300°C

SM3 – For unplated fasteners used between 0°C and 520°C

All fasteners are produced from heat-treated bar stock which is ultrasonically tested, magnetically particle examined, and chemically analysed in accordance with the standard. Test samples from each batch undergo:

-Tensile and proof load testing

-Charpy V-notch impact testing

-Hardness testing

-Dimensional and thread inspection

-Surface examination

Each product is supported by a complete documentation pack including raw material certificates, inspection reports, test results, and certificate of conformity.

Additional Material Capabilities

In addition to the SM-series carbon and alloy steel fasteners, Energy Bolting also manufactures to related MOD requirements covering:

*Austenitic, duplex and super duplex stainless steels

*Nickel-based alloys such as Monel® and Inconel®

*Copper alloys including nickel-aluminium bronze (DEF STAN 02-833)

*Titanium and other non-ferrous grades specified in naval applications

Our production is supported by UKAS-accredited laboratories and an approved supply chain that ensures conformance with all relevant MOD and ISO standards.

Typical First Level Fastener Requirements include:

Studbolts, Engineer Studs, Hex Nuts, Nyloc Nuts , Washers & Machined Components to customer drawings