| Item Name | Screw Shoulder |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 01-425-2426 (014252426) |
| NCB Code | USA (01) |
| Manufacturer | Bae Systems Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 2A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.150 INCHES MINIMUM AND 0.156 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 0.334 INCHES MINIMUM AND 0.346 INCHES MAXIMUM |
| AASK | HEAD STYLE | FLAT CHAMFER |
| AASL | HEAD DIAMETER | 0.372 INCHES MINIMUM AND 0.374 INCHES MAXIMUM |
| AASU | HEAD HEIGHT | 0.040 INCHES NOMINAL |
| AATN | SHOULDER DIAMETER | 0.278 INCHES MINIMUM FIRST SHOULDER AND 0.280 INCHES MAXIMUM FIRST SHOULDER |
| AATX | SHOULDER LENGTH | 0.184 INCHES MINIMUM FIRST SHOULDER AND 0.190 INCHES MAXIMUM FIRST SHOULDER |
| ABQZ | INTERNAL DRIVE STYLE | TORQUE |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| CQFM | HARDNESS RATING | 40.0 ROCKWELL C MINIMUM OVERALL AND 45.0 ROCKWELL C MAXIMUM OVERALL |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| FEAT | SPECIAL FEATURES | 63.0 MICRO FINISH ON SIDE OF HEAD AND SHOULDER |
| MATT | MATERIAL | STEEL COMP 630 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5643, COND A ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | PASSIVATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35, TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| Components Related to NSN - 5305-01-425-2426, 5305014252426 | ||||
| 5306-00-660-3288 (5306006603288) | 5340-01-138-8180 (5340011388180) | 5330-01-323-8411 (5330013238411) | 5360-01-204-0090 (5360012040090) | |
| 5307-00-612-4110 (5307006124110) | 5340-01-482-4141 (5340014824141) | 5310-01-062-0524 (5310010620524) | 5340-01-597-2720 (5340015972720) | |
| 5325-99-120-1207 (5325991201207) | 5315-01-696-7898 (5315016967898) | 5340-01-137-3603 (5340011373603) | 5355-01-379-0440 (5355013790440) | |
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