BS SP 115 to 117:1956

This standard BS SP 115 to 117:1956 Specifications for hydraulic surface-check type lubricating nipples for aircraft is classified in these ICS categories:

• 49.035 Components for aerospace construction

These British Standards specify the requirements for hydraulic, surface-check type, lubricating nipples having body attachment screw threads ¼ in. – 28, Unified Fine (UNF), Class 2A limits. Three types of nipple are specified:–

1. straight and in one piece, with attachment screw threads on one end of the body and the nipple on the other (Figure 2);
2. a body with attachment screw threads on one end and a nipple set in the other end at 45° to the axis of the attachment screw threads (Figure 3);
3. a body with attachment screw threads at one end and a nipple set in the other end at 90° to the axis of the attachment screw threads (Figure 4).