supply of set of itemsset of items,supply and fixing of:- 1) 113 mm long ss bolt (dia 20 mm) along with spring washer-12 nos. 2) 140 mm long ss bolt (dia 20 mm) along with spring washer-04 nos. 3) 100 mm long ss bolt (dia 23.60 mm head side and 20 mm thread lower side) along with spring washer- 04nos. 4) 155 mm long ss bolt ( dia 23.60 mm head side and 20 mm thread lower side) along with spring washer-2 nos. 5) specification of spring inserted reusable anti loose nut. lock nut m -020, specifications: model no. sp20 pitch: 2.5 hn:1 6.0 bn:30.0 cn:34.6 ln:28.8 sn:30.0. material: sts, s45c, scm, plating electro zinc plating, melted zinc, ni ckel, chrome, zinc powder plating-22 nos. 6) nut protection device-6 nos 7) special tool for opener with s eparate handle-1 nos 8) special tool for opener with attached handle-1 nos. make/brand: safer lock or si milar [ warranty period: 30 months after the date of delivery ] ]