| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| EXPANSION DEVICE | SERRATED STEM-TYPE W |
| FASTENER LENGTH | 0.621 INCHES MINIMUM AND 0.641 INCHES MAXIMUM |
| GRIP LENGTH | 0.344 INCHES MINIMUM AND 0.407 INCHES MAXIMUM |
| HARDNESS RATING | 326.0 KNOOP MINIMUM AND 466.0 KNOOP MAXIMUM SLEEVE |
| HARDNESS RATING | 48.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM STEM |
| HEAD STYLE | FLUSH (FLAT) COUNTERSUNK (INCLUDED ANGLE - LESS THAN 135 DEG W OR W/O CHAMFER) |
| HEAD MAJOR DIAMETER | 0.634 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A331 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP E4340 OR STEEL COMP 4027 OR STEEL COMP 4037 OR STEEL COMP 4130 OR STEEL COMP 4140 OR STEEL COMP 4150 OR STEEL COMP 4340 OR STEEL COMP 4620 OR STEEL COMP 4815 OR STEEL COMP 6150 OR STEEL COMP 8615 OR STEEL COMP 8620 OR STEEL COMP 8630 OR STEEL COMP 8640 OR STEEL COMP 8740 OVERALL |
| MINIMUM TENSILE STRENGTH | 112000 POUNDS PER SQUARE INCH |
| SHANK DIAMETER | 0.310 INCHES MINIMUM AND 0.312 INCHES MAXIMUM |
| SHANK STYLE | SELF-PLUGGING MECHANICALLY LOCKED STEM |
| SPECIAL FEATURES | "U" DENOTES SINGLE ACTION FASTENERS INSTALLED WITH A SINGLE ACTION TOOL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE STEM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE SLEEVE |
| SURFACE TREATMENT | CADMIUM AND CHROMATE SLEEVE |
| SURFACE TREATMENT | CADMIUM STEM |