| MRC | Criteria | Characteristic |
|---|
| AAJD | THREAD CLASS | 2A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.250 INCHES NOMINAL |
| AASB | FASTENER LENGTH | 0.852 INCHES NOMINAL |
| AASK | HEAD STYLE | HEXAGON |
| AASU | HEAD HEIGHT | 0.172 INCHES MINIMUM AND 0.190 INCHES MAXIMUM |
| AATB | WIDTH BETWEEN FLATS | 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM |
| ABQZ | INTERNAL DRIVE STYLE | SLOT |
| AGSM | MATERIAL ACCOMMODATED THICKNESS | 0.318 INCHES MINIMUM AND 0.332 INCHES MAXIMUM |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 20 |
| MATT | MATERIAL | ALUMINUM ALLOY 6061 STAND-OFF |
| MATT | MATERIAL | IRON ALLOY 660 FASTENER |
| MATT | MATERIAL | STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 316 SECONDARY WASHER |
| MATT | MATERIAL | STEEL COMP 302 PRIMARY WASHER |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS5732 ASSN STD SINGLE MATERIAL RESPONSE FASTENER |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5059 MIL SPEC ALL MATERIAL RESPONSES SECONDARY WASHER |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/8 FED SPEC SINGLE MATERIAL RESPONSE STAND-OFF |
| SFTT | SURFACE TREATMENT | ANODIZE STAND-OFF |
| SFTT | SURFACE TREATMENT | PASSIVATE FASTENER |
| SFTT | SURFACE TREATMENT | PASSIVATE PRIMARY WASHER |
| SFTT | SURFACE TREATMENT | PASSIVATE SECONDARY WASHER |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625,TYPE1,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE STAND-OFF |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE FASTENER |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE PRIMARY WASHER |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SECONDARY WASHER |
| THSD | THREAD SERIES DESIGNATOR | UNF |
