| Item Name | Screw Close Tolerance |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 01-076-6318 (010766318) |
| NCB Code | USA (01) |
| Manufacturer | Hi Shear Corporation, Huck International Inc, Northrop Grumman Systems Corporation, Northrop Grumman Technical Services Inc, Sps Technologies Inc, Alcoa Global Fasteners Inc, Tactair Fluid Controls Inc, Grimes Aerospace Company |
| Part Number | Manufacturer | Item Name | Cage Code | RFQ |
|---|---|---|---|---|
| 51B581-5-22H | hi shear corporation | screw close tolerance | 73197 | RFQ |
| 51B581-5-22H | huck international inc | screw close tolerance | 17446 | RFQ |
| 51B581-5-22H | northrop grumman systems corporation | screw close tolerance | 76823 | RFQ |
| 51B581-5-22H | northrop grumman technical services inc | screw close tolerance | 0jrc1 | RFQ |
| 51B581-5-22H | sps technologies inc | screw close tolerance | 80539 | RFQ |
| 51B581-5-22H | alcoa global fasteners inc | screw close tolerance | 06950 | RFQ |
| 51B581-5-22H | tactair fluid controls inc | screw close tolerance | 70236 | RFQ |
| 51B581-5-22H | grimes aerospace company | screw close tolerance | 72914 | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.349 INCHES MINIMUM AND 0.416 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 1.734 INCHES MINIMUM AND 1.781 INCHES MAXIMUM |
| AASK | HEAD STYLE | FLAT COUNTERSUNK |
| AASL | HEAD DIAMETER | 0.469 INCHES MINIMUM AND 0.474 INCHES MAXIMUM |
| AAUR | GRIP DIAMETER | 0.3110 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM |
| AAWB | SHANK UNTHREADED HOLE DIAMETER | 0.066 INCHES MINIMUM FIRST HOLE AND 0.086 INCHES MAXIMUM FIRST HOLE |
| ABQZ | INTERNAL DRIVE STYLE | OFFSET CRUCIFORM (TORQUE SET) |
| AHYM | NOMINAL THREAD DIAMETER | 0.312 INCHES |
| ANEE | GRIP LENGTH | 1.365 INCHES MINIMUM AND 1.385 INCHES MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 24 |
| CQBC | MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH |
| CQFM | HARDNESS RATING | 39.0 ROCKWELL C MINIMUM OVERALL AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| CRSQ | COUNTERSINK ANGLE | 99.5 DEGREES MINIMUM AND 100.5 DEGREES MAXIMUM |
| CRZS | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.615 INCHES MINIMUM FIRST HOLE AND 1.662 INCHES MAXIMUM FIRST HOLE |
| CSYM | SURFACE FINISH | 32.0 MICROINCHES GRIP |
| MATT | MATERIAL | STEEL COMP E4340 OVERALL OR STEEL COMP 4140 OVERALL OR STEEL COMP 8740 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OVERALL OR MIL-S-5626 MIL SPEC 2ND MATERIAL RESPONSE OVERALL OR MIL-S-6049 MIL SPEC 3RD MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| Components Related to NSN - 5305-01-076-6318, 5305010766318 | ||||
| 5365-01-582-0046 (5365015820046) | 5330-00-831-1630 (5330008311630) | 5310-00-526-8027 (5310005268027) | 5331-00-292-0605 (5331002920605) | |
| 5340-01-570-6866 (5340015706866) | 5340-01-685-9304 (5340016859304) | 5315-01-079-8245 (5315010798245) | 5305-00-620-3769 (5305006203769) | |
| 5310-01-200-9994 (5310012009994) | 5305-01-279-2343 (5305012792343) | 5365-00-616-5881 (5365006165881) | 5365-01-646-6190 (5365016466190) | |
If You’re Ever Looking for NSN parts Or Have an Aircraft On Ground Situation, Don’t forget That We offer Competitive Pricing and Guaranteed On-Time Delivery.
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