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430 PROPRIETARY FRAMING ANCHORS AND CLEATS
• Manufacturer: Contractor's choice.
- Product reference: Contractor's choice.
• Material/ finish: as recomended by manufacturer.
• Fasteners: Galvanized or sherardized nails, size as recommended by product
manufacturer..

450 STAINLESS STEEL BOLT ASSEMBLIES general
• Bolts: To BS EN ISO 3506-1.
- Designation: A2 or A4 in corrosive environments.
• Nuts and washers: To suit grade of bolt.
- Washer size:
In contact with timber: Diameter: 2 times bolt diameter; thickness: 0.2 times bolt
diameter.
In contact with steel section/ plate (required when surface finish may be
damaged by nut or bolt head rotating): To BS 4320.

470 NAILS generally
• Standard: As section Z20.
• Type: Location and use specific.
• Material: Steel.
- Strength (minimum): Ultimate tensile strength 600 N/mm².
• Finish as delivered: Galvanized.

480 SCREWS generally
• Standard: As section Z20.
• Material: Stainless steel.
• Tensile strength (minimum): 550 N/mm².
• Finish as delivered: Galvanized.

490 COACH SCREWS generally
• Standard: To DIN 571.
• Material: Stainless steel.
• Tensile strength (minimum): 550 N/mm².
• Finish as delivered: Galvanized.

520 STAINLESS STEEL DOWELS generaly
• Product form: Ribbed bar.
• Standard: To BS 6744.
- Designation: To BS EN 10088-1, grade 1.4301.
- Strength grade: 650.
• Other requirements: Select bar, or machine bar, to achieve a tolerance of -0/+0.1
mm on specified size, and restrict diameter of holes in timber to diameter of dowel.

530 NON FERROUS DOWELS generally
• Material: Glass fibre reinforced epoxy resin.
• Manufacturer: Contractor's choice.
- Product reference: Contractor's choice.

RotF generic (intermediate) NBS 2014 6118-AEW-XX-XX-NBS-A-01