| COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL |
| EXPANSION DEVICE | THREADED STEM |
| FEATURES PROVIDED | SELF-LOCKING |
| GRIP LENGTH | 0.345 INCHES MINIMUM AND 0.405 INCHES MAXIMUM |
| HARDNESS RATING | 39.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM NUT |
| HEAD MAJOR DIAMETER | 0.531 INCHES NOMINAL |
| HEAD STYLE | FLUSH (FLAT) COUNTERSUNK (INCLUDED ANGLE - LESS THAN 135 DEG W OR W/O CHAMFER) |
| LUBRICATION | CARBO WAX OR PARAFFIN WAX OR CETYL ALCOHOL OR DRY FILM |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6758 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5626 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 3RD MATERIAL RESPONSE NUT |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-5-7635 FED SPEC 1ST MATERIAL RESPONSE OR AMS 5639 ASSN STD 2ND MATERIAL RESPONSE OR AMS 5641 ASSN STD 3RD MATERIAL RESPONSE SLEEVE |
| MATERIAL | STEEL COMP 4130 OR STEEL COMP 4140 OR STEEL COMP 8740 NUT |
| MATERIAL | STEEL CORROSION RESISTING SLEEVE |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | VISU-LOK, FASTENER, BLIND INTERNALLY THREADED, EXTERNAL SLEEVE ALLOY STEEL 100 DEG REDUCED FLUSH HEAD, SELF LOCKING GROUND SHANK, 1/32 INCH OVERSIZE |
| SPECIAL FEATURES | SCREW MATERIAL ALLOY STEEL; HEAT TREAT NUT AND SCREW PER MIL-H-6875 TO RC 39-46, SLEEVE AS REQUIRED FOR PERFORMANCE |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-S-5002 MIL SPEC 1ST TREATMENT RESPONSE AND QQ-P-416, TYPE I, CLASS 3 FED SPEC 2ND TREATMENT RESPONSE SLEEVE |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416, TYPE II, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE NUT |
| SURFACE TREATMENT | CADMIUM NUT |
| SURFACE TREATMENT | PASSIVATE AND CADMIUM SLEEVE |