Technical details

• Hi-Shear drawing HL30 revision 22 identifies this designation as a HI-LOK pin with a protruding shear head.
• The diameter row gives 1/4 in nominal pin diameter and head diameter A 0.387 to 0.412 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.
• Grip dash 6 denotes 0.375 in maximum grip under the drawing ordering rule.
• The selected diameter row specifies a modified 0.2500-28 UNJF-3A thread.
• The drawing specifies Type 431 stainless steel to AMS 5628 and MIL-S-18732.
• Finish code AP specifies HI-KOTE 1 aluminum pigmented coating to Hi-Shear Specification 294 and cetyl alcohol lubricant to Specification 305. The drawing specifies the HI-KOTE 1 NC coating for EU-coated fasteners after February 21, 2015.