BS 2090:1954

This standard BS 2090:1954 Specification for hook spanners, peg spanners, coupling wrenches and the related slots, holes and horns is classified in these ICS categories:

• 25.140.30 Hand-operated tools

Part 1. Hook spanners. Section 1 relates to the dimensional and clearance details of hook spanners. Clauses on material and hardness are included.

Section 2 relates to the slots on circular nuts with which the spanners are to operate.

Part 2. Peg spanners. Relates to the dimensions and materials for peg spanners and to the details of the peg holes in circular and other nuts with which this type of spanner is used.

Part 3. Coupling wrenches. Relates to the dimensions of coupling wrenches, together with the horns on which they function.

Dimensions, materials of hook spanners (C-spanners) and peg spanners; dimensions of slots and holes in circular and similar nuts in which spanners engage. Dimensions, materials of coupling wrenches for hoses up to 100 lb/sq in (not including fire hose couplings). Main nominal dimensions of circular and rectangular horns included.