AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Screw Close Tolerance |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 01-606-5234 (016065234) |
| NCB Code | USA (01) |
| Manufacturer | Textron Aviation Inc, National Aerospace Standards Com, Cessna Aircraft Company |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| NAS1581C4T17 | textron aviation inc | screw close tolerance | RFQ |
| NAS1581C4T17 | national aerospace standards com | screw close tolerance | RFQ |
| NAS1581C4T17 | cessna aircraft company | screw close tolerance | RFQ |
| NAS158C4T17 | cessna aircraft company | screw close tolerance | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| MDCL | Material Document And Classification | AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5853 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| AASK | Head Style | FLAT COUNTERSUNK |
| AHYM | Nominal Thread Diameter | 0.250 INCHES |
| ANEE | Grip Length | 1.062 INCHES NOMINAL |
| MRC | Decoded Requirement | Clear Text Reply |
| CQBC | Minimum Tensile Strength | 3700 POUNDS PER SQUARE INCH |
| AASA | Thread Length | 0.403 INCHES NOMINAL |
| ABQZ | Internal Drive Style | OFFSET CRUCIFORM (TORQUE SET) |
| AAJF | Thread Direction | RIGHT-HAND |
| AASL | Head Diameter | 0.3988 INCHES NOMINAL |
| MATT | Material | IRON ALLOY 660 OVERALL |
| AASB | Fastener Length | 1.465 INCHES NOMINAL |
| THSD | Thread Series Designator | UNJF |
| AAUR | Grip Diameter | 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM |
| CMLP | Thread Quantity Per Inch | 28 |
| CRSQ | Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| AAJD | Thread Class | 3A |
| Relevant Components for NSN - 5305-01-606-5234, 5305016065234 | ||||
| 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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