| Item Name | Screw Close Tolerance |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 01-642-8658 (016428658) |
| NCB Code | USA (01) |
| Manufacturer | National Aerospace Standards Com |
| MRC | Criteria | Characteristic |
|---|---|---|
| STDC | Surface Treatment Document And Classification | AMS2700,METHOD 1,CLASS 4 NATIONAL STD SINGLE TREATMENT RESPONSE OVERALL |
| FEAT | Special Features | OFFSET CRUCIFORM RECESS IAW NASM33781 OR NASM14191;HEAD MARKED WITH BASIC PART NUMBER,APPLICABLE DASH NUMBER,MFG TRADE MARK AND MATL CODE WHERE APPLICABLE;HEAT TREAT 160-190 KSI FTU |
| CQBC | Minimum Tensile Strength | 2240 POUNDS PER SQUARE INCH |
| MRC | Decoded Requirement | Clear Text Reply |
| CMLP | Thread Quantity Per Inch | 32 |
| CSYM | Surface Finish | 125.0 MICROINCHES HEAD |
| AASA | Thread Length | 0.276 INCHES NOMINAL |
| MATT | Material | STEEL CORROSION RESISTING OVERALL |
| AASK | Head Style | PAN |
| CSYM | Surface Finish | 32.0 MICROINCHES THREADS |
| AASB | Fastener Length | 0.823 INCHES MINIMUM AND 0.853 INCHES MAXIMUM |
| THSD | Thread Series Designator | UNJC |
| AASL | Head Diameter | 0.306 INCHES MINIMUM AND 0.322 INCHES MAXIMUM |
| SFTT | Surface Treatment | PASSIVATE OVERALL |
| ANEE | Grip Length | 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM |
| ABQZ | Internal Drive Style | OFFSET CRUCIFORM (TORQUE SET) |
| CSYM | Surface Finish | 125.0 MICROINCHES GRIP |
| AHYM | Nominal Thread Diameter | 0.1640 INCHES |
| AAJF | Thread Direction | RIGHT-HAND |
| ZZZK | Specification/Standard Data | 80205-NAS1131 THRU NAS1138 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| MDCL | Material Document And Classification | A286 IAW AMS5731,5732,5737 OR 5853 NATIONAL STD SINGLE MATERIAL RESPONSE OVERALL |
| AASU | Head Height | 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM |
| CXCY | Part Name Assigned By Controlling Agency | SCREW,MACHINE,PAN HEAD,CLOSE TOLERANCE,SHORT THREAD,OFFSET CRUCIFORM |
| AAUR | Grip Diameter | 0.1625 INCHES MINIMUM AND 0.1635 INCHES MAXIMUM |
| CSYM | Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| AAJD | Thread Class | 3A |
| Relevant Components for NSN - 5305-01-642-8658, 5305016428658 | ||||
| 5320-01-093-5687 (5320010935687) | 5340-00-286-8500 (5340002868500) | 5310-00-797-4430 (5310007974430) | 5331-01-548-6940 (5331015486940) | |
| 5340-01-389-2408 (5340013892408) | 5340-01-499-3481 (5340014993481) | 5310-01-418-9739 (5310014189739) | 5320-01-419-8697 (5320014198697) | |
| 5340-01-681-6722 (5340016816722) | 5340-01-620-4639 (5340016204639) | 5340-01-481-2087 (5340014812087) | 5331-01-097-0869 (5331010970869) | |
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