HILOC,
| HI-SHEAR CORPORATION | 73197 |
| LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC | L4528 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| FASTENER LENGTH | 2.072 INCHES MINIMUM AND 2.092 INCHES MAXIMUM |
| HEAD STYLE | FLUSH COUNTERSUNK |
| SHANK DIAMETER | 0.2797 INCHES MINIMUM AND 0.2807 INCHES MAXIMUM |
| SHANK STYLE | ERR-090 |
| HEAD MAJOR DIAMETER | 0.4210 INCHES MINIMUM AND 0.4260 INCHES MAXIMUM |
| GRIP LENGTH | 1.682 INCHES MINIMUM AND 1.692 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 28 |
| MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| SHEAR STRENGTH | 95000 SINGLE POUNDS PER SQUARE INCH |
| COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| MATERIAL | STEEL OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYII,CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| THREAD SERIES DESIGNATOR | UNJF |
| SPECIFICATION/STANDARD DATA | 73197-HL220-8-27 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION |
| A metallic or nonmetallic item, headed at one end, with a cylindrically shaped shank which may be tapered, grooved, or threaded. A locking collar or sleeve may be provided to perform the same holding action as the clinching portion of a conventional rivet. The shank may include an external wrenching facility which breaks off at a predetermined applied torque. |
