Technical details

• Hi-Shear drawing HL11 revision 53 identifies this designation as a titanium HI-LOK pin with a 100-degree flush shear head.
• Dash 8 denotes 1/4 in nominal diameter. The selected row lists head diameter A 0.3898 to 0.3948 in.
• Shank D is 0.2490 to 0.2495 in without coating or solid film and 0.2485 to 0.2495 in after coating or solid film. The drawing allows a 0.0002 in increase in maximum D for solid film or aluminum coating.
• Grip dash 49 denotes 3.0625 in maximum grip under the drawing ordering rule.
• The selected diameter row specifies a modified 0.2500-28 UNJF-3A thread.
• The drawing specifies 6Al-4V titanium alloy to AMS 4928 or AMS 4967.
• Finish code V specifies cetyl alcohol lubricant to Hi-Shear Specification 305.