AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Screw Shoulder |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 00-914-3818 (009143818) |
| NCB Code | USA (00) |
| Manufacturer | Nimikkeistokeskus Ncb Finland, Zf Industrieantriebe Witten Gmbh, Inspektorat Wsparcia Sil Zbrojnych, Military Standards Corp, National Aerospace Standards Com |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| 10386527 | nimikkeistokeskus ncb finland | screw shoulder | RFQ |
| MS51957-8 | zf industrieantriebe witten gmbh | screw shoulder | RFQ |
| 5305PL0839973 | inspektorat wsparcia sil zbrojnych | screw shoulder | RFQ |
| MS51975-8 | military standards corp | screw shoulder | RFQ |
| MS51975-8 | national aerospace standards com | screw shoulder | RFQ |
| MS16638-8 | military standards corp | screw shoulder | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.418 INCHES MINIMUM AND 0.438 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 0.923 INCHES MINIMUM AND 0.933 INCHES MAXIMUM |
| AASK | HEAD STYLE | FLAT CHAMFER |
| AASL | HEAD DIAMETER | 0.419 INCHES MINIMUM AND 0.437 INCHES MAXIMUM |
| AASU | HEAD HEIGHT | 0.209 INCHES MINIMUM AND 0.219 INCHES MAXIMUM |
| AATN | SHOULDER DIAMETER | 0.3085 INCHES MINIMUM AND 0.3105 INCHES MAXIMUM FIRST SHOULDER |
| AATX | SHOULDER LENGTH | 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM FIRST SHOULDER |
| ABQZ | INTERNAL DRIVE STYLE | HEXAGON |
| AGAV | END ITEM IDENTIFICATION | MULTIPLE LAUNCH ROCKET SYSTEM (MLRS) |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| ASDB | WIDTH ACROSS FLATS | 0.156 INCHES NOMINAL |
| CMLP | THREAD QUANTITY PER INCH | 20 |
| CQBC | MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| CQFM | HARDNESS RATING | 32.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| MATT | MATERIAL | STEEL COMP 4037 OR STEEL COMP 4137 OR STEEL COMP 4140 OR STEEL COMP 8630 OR STEEL COMP 8740 OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNC |
| Relevant Components for NSN - 5305-00-914-3818, 5305009143818 | ||||
| 5305-00-151-0390 (5305001510390) | 5305-00-162-0212 (5305001620212) | 5330-01-021-6193 (5330010216193) | 5306-01-667-2305 (5306016672305) | |
| 5305-00-702-7578 (5305007027578) | 5306-01-467-0619 (5306014670619) | 5340-14-507-0973 (5340145070973) | 5330-01-545-5049 (5330015455049) | |
| 5331-01-433-9967 (5331014339967) | 5330-01-176-0563 (5330011760563) | 5330-20-001-0516 (5330200010516) | 5305-00-550-9932 (5305005509932) | |
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