AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
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| Item Name | Screw Shoulder |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 00-728-2809 (007282809) |
| NCB Code | USA (00) |
| Manufacturer | Ontic Engineering And Manufacturing Inc, Hamilton Sundstrand Corporation |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AASA | THREAD LENGTH | 0.460 INCHES NOMINAL |
| AASB | FASTENER LENGTH | 0.850 INCHES NOMINAL |
| AASL | HEAD DIAMETER | 0.310 INCHES NOMINAL |
| AATB | WIDTH BETWEEN FLATS | 0.240 INCHES MINIMUM AND 0.250 INCHES MAXIMUM |
| AATN | SHOULDER DIAMETER | 0.250 INCHES NOMINAL FIRST SHOULDER |
| AHYM | NOMINAL THREAD DIAMETER | 0.190 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 32 |
| CQFM | HARDNESS RATING | 83.0 ROCKWELL SUPERFICIAL 15-N MINIMUM OVERALL AND 85.5 ROCKWELL SUPERFICIAL 15-N MAXIMUM OVERALL |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| MATT | MATERIAL | STEEL OVERALL |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASK | HEAD STYLE | ROUND W/WRENCH FLATS |
| AASU | HEAD HEIGHT | 0.070 INCHES NOMINAL |
| AATX | SHOULDER LENGTH | 0.310 INCHES NOMINAL FIRST SHOULDER |
| ABQZ | INTERNAL DRIVE STYLE | CROSS RECESS TYPE II |
| FEAT | SPECIAL FEATURES | TWO DRILLED HOLES THRU SHOULDER 90 DEG APART 0.070 IN. DIA 0.230 IN. FROM HEAD BEARING SURFACE |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| Relevant Components for NSN - 5305-00-728-2809, 5305007282809 | ||||
| 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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