AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Screw Lag |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 00-177-5542 (001775542) |
| NCB Code | USA (00) |
| Manufacturer | Federal Specifications, Bolt Depot Inc, Military Standards Corp, General Services Administration Inc, American Society Of Mechanical, American National Standards, Hillman Group Inc |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| FF-B-561 | federal specifications | screw lag | RFQ |
| 1050 | bolt depot inc | screw lag | RFQ |
| MS16992-507 | military standards corp | screw lag | RFQ |
| FF-B-561 TY1ST1GRB | general services administration inc | screw lag | RFQ |
| ASME-B18.2.1 | american society of mechanical | screw lag | RFQ |
| ANSI B18.2.1 | american national standards | screw lag | RFQ |
| 230021 | hillman group inc | screw lag | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AASB | FASTENER LENGTH | 3.000 INCHES NOMINAL |
| AASK | HEAD STYLE | HEXAGON |
| AASU | HEAD HEIGHT | 0.150 INCHES MINIMUM AND 0.188 INCHES MAXIMUM |
| AATB | WIDTH BETWEEN FLATS | 0.437 INCHES MINIMUM AND 0.438 INCHES MAXIMUM |
| AATN | SHOULDER DIAMETER | 0.237 INCHES MINIMUM AND 0.260 INCHES MAXIMUM FIRST SHOULDER |
| AATX | SHOULDER LENGTH | 0.094 INCHES MINIMUM FIRST SHOULDER |
| CQBC | MINIMUM TENSILE STRENGTH | 55000 POUNDS PER SQUARE INCH |
| CQFM | HARDNESS RATING | 60.0 ROCKWELL B MINIMUM OVERALL |
| CRGF | NONMACHINE THREAD STYLE | GIMLET POINT (TYPE A,AB OR BA) |
| CTYF | NONMACHINE NOMINAL THREAD DIAMETER | 0.250 INCHES |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| MATT | MATERIAL | STEEL CORROSION RESISTING OVERALL |
| SFTT | SURFACE TREATMENT | ZINC OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM-B633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Relevant Components for NSN - 5305-00-177-5542, 5305001775542 | ||||
| 5365-01-101-3819 (5365011013819) | 5305-01-006-9246 (5305010069246) | 5310-00-639-2818 (5310006392818) | 5310-01-332-9051 (5310013329051) | |
| 5330-01-399-2381 (5330013992381) | 5340-01-496-5144 (5340014965144) | 5342-00-326-6390 (5342003266390) | 5305-01-361-1154 (5305013611154) | |
| 5305-01-516-4729 (5305015164729) | 5330-15-007-8953 (5330150078953) | 5340-01-078-1350 (5340010781350) | 5310-01-471-5429 (5310014715429) | |
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