| FASTENER LENGTH | 0.718 INCHES MINIMUM AND 0.750 INCHES MAXIMUM |
| HEAD DIAMETER | 0.306 INCHES MINIMUM AND 0.322 INCHES MAXIMUM |
| HEAD HEIGHT | 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM |
| HEAD STYLE | PAN |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS5516, AMS5903, AMS5904, AMS5905, OR AMS5906 AEROSPACE MATERIAL SPEC STD 1ST MATERIAL RESPONSE OR AMS5513, AMS5910, AMS5911, AMS5912, OR AMS5913 AEROSPACE MATERIAL SPEC STD 2ND MATERIAL RESPONSE OR ASTM A493 AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) 3RD MATERIAL RESPONSE PRIMARY WASHER |
| MATERIAL DOCUMENT AND CLASSIFICATION | CLASS 302 CONDITION B (UNS S30200) OR CLASS 304 CONDITION A (UNS S30400) PER AMS-QQ-S-763 AEROSPACE MATERIAL SPEC STD ALL MATERIAL RESPONSES FASTENER |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW, PAN HEAD, ASSEMBLED WASHERS |
| MATERIAL DOCUMENT AND CLASSIFICATION | UNS S31600 ASSN STD SINGLE MATERIAL RESPONSE SECONDARY WASHER |
| MATERIAL | STEEL COMP 302 OR STEEL COMP 304 FASTENER |
| MATERIAL | STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 384 PRIMARY WASHER |
| MATERIAL | STEEL COMP 316 SECONDARY WASHER |
| NOMINAL THREAD DIAMETER | 0.164 INCHES |
| PRIMARY WASHER MATERIAL THICKNESS | 0.013 INCHES MINIMUM AND 0.019 INCHES MAXIMUM |
| PRIMARY WASHER OUTSIDE DIAMETER | 0.307 INCHES MINIMUM AND 0.317 INCHES MAXIMUM |
| PRIMARY WASHER STYLE | FLAT |
| SECONDARY WASHER MATERIAL THICKNESS | 0.040 INCHES NOMINAL |
| SECONDARY WASHER OUTSIDE DIAMETER | 0.293 INCHES NOMINAL |
| SECONDARY WASHER STYLE | SPLIT HELICAL RING |
| SECONDARY WASHER RELATIONSHIP TO PRIMARY WASHER | NOT IDENTICAL |
| SPECIFICATION/STANDARD DATA | 80205-NAS1301 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2700, METHOD 1, CLASS 4 NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 2A |
| THREAD QUANTITY PER INCH | 32 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| WASHER QUANTITY | 2 |