BS 2090:1954

What is BS 2090 - Spanners and coupling wrenches about?  

BS 2090 has been sub-divided into three parts. They are as follows: 

• 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. 

Who is BS 2090 - Spanners and coupling wrenches for? 

BS 2090 on the specifications for hook spanners, peg spanners, coupling wrenches and the related slots, holes and horns is useful for: 

• Manufacturers of hardware tools 
• Designers of hardware tools 
• Quality control personnel 

Why should you use BS 2090 - Spanners and coupling wrenches?  

Hook spanners, peg spanners and coupling wrenches are used for tightening bolts and nuts. The tightening function of these tools depends on their design and dimensions, any major deviations could render these tools faulty or defective. 

BS 2090 provides detailed guidance on the dimensions and tolerances for hook spanners, peg spanners, and coupling wrenches to ensure they function efficiently. These dimensions can also be used for quality assurance purposes to identify defective pieces and increase the overall quality of the products.  

Overall, the specifications provided in BS 2090 help you to design and manufacture high-quality spanners and coupling wrenches.