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) | 00-151-8662 (001518662) |
| NCB Code | USA (00) |
| Manufacturer | Huck International Inc, Heartland Precision Fasteners In, Pilgrim Screw Corporation, Northrop Grumman Systems Corporation, Sps Technologies Inc, Bf Goodrich Aerospace |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| GS551C3-278 | huck international inc | screw shoulder | RFQ |
| HP6551C3-278 | heartland precision fasteners in | screw shoulder | RFQ |
| PIL551C3-278 | pilgrim screw corporation | screw shoulder | RFQ |
| GS551C3-278 | northrop grumman systems corporation | screw shoulder | RFQ |
| GS551C3-278 | heartland precision fasteners in | screw shoulder | RFQ |
| AIC551C3-278 | sps technologies inc | screw shoulder | RFQ |
| BM19069-3-278 | huck international inc | screw shoulder | RFQ |
| GS551C3-278 | sps technologies inc | screw shoulder | RFQ |
| PBF1285-3-278 | sps technologies inc | screw shoulder | RFQ |
| B1990-0 | bf goodrich aerospace | screw shoulder | RFQ |
| GS551C3-278 | bf goodrich aerospace | screw shoulder | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 2A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.281 INCHES MINIMUM AND 0.341 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 0.516 INCHES MINIMUM AND 0.546 INCHES MAXIMUM |
| AASK | HEAD STYLE | FLAT COUNTERSUNK |
| AASL | HEAD DIAMETER | 0.276 INCHES NOMINAL |
| AATN | SHOULDER DIAMETER | 0.193 INCHES MINIMUM FIRST SHOULDER AND 0.195 INCHES MAXIMUM FIRST SHOULDER |
| AATX | SHOULDER LENGTH | 0.165 INCHES MINIMUM FIRST SHOULDER AND 0.195 INCHES MAXIMUM FIRST SHOULDER |
| ABQZ | INTERNAL DRIVE STYLE | SLOT |
| AHYM | NOMINAL THREAD DIAMETER | 0.190 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 32 |
| CQFM | HARDNESS RATING | 33.0 ROCKWELL C MINIMUM OVERALL AND 37.0 ROCKWELL C MAXIMUM OVERALL |
| CRSQ | COUNTERSINK ANGLE | 100.0 DEGREES NOMINAL |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| MATT | MATERIAL | STEEL COMP 4037 OVERALL OR STEEL COMP 8740 OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL 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 | UNF |
| Relevant Components for NSN - 5305-00-151-8662, 5305001518662 | ||||
| 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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