| Item Name | Screw Close Tolerance |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 00-801-7103 (008017103) |
| NCB Code | USA (00) |
| Manufacturer | Northrop Grumman Systems Corporation, Alcoa Global Fasteners Inc, Hi Shear Corporation, Huck International Inc, Lisi Aerospace Canada Corp, Northrop Grumman Technical Services Inc, Sps Technologies Inc |
| Part Number | Manufacturer | Item Name | Cage Code | RFQ |
|---|---|---|---|---|
| 51B221-21H | northrop grumman systems corporation | screw close tolerance | 76823 | RFQ |
| 51B221-21H | alcoa global fasteners inc | screw close tolerance | 06950 | RFQ |
| 51B221-21H | hi shear corporation | screw close tolerance | 73197 | RFQ |
| 51B221-21H | huck international inc | screw close tolerance | 17446 | RFQ |
| 51B221-21H | lisi aerospace canada corp | screw close tolerance | l4528 | RFQ |
| 51B221-21H | northrop grumman technical services inc | screw close tolerance | 0jrc1 | RFQ |
| 51B221-21H | sps technologies inc | screw close tolerance | 80539 | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.276 INCHES MINIMUM |
| AASK | HEAD STYLE | MODIFIED PAN |
| AAUR | GRIP DIAMETER | 0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM |
| ABQZ | INTERNAL DRIVE STYLE | OFFSET CRUCIFORM (TORQUE SET) |
| ANEE | GRIP LENGTH | 1.298 INCHES MINIMUM AND 1.328 INCHES MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 32 |
| CQBC | MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH |
| CSYM | SURFACE FINISH | 32.0 MICROINCHES GRIP |
| FEAT | SPECIAL FEATURES | CRITICAL SAFETY ITEM; PER DSCR-MA-21-15267 ALL SOURCES OF SUPPLY MUST BE APPROVED BY ESA |
| MATT | MATERIAL | STEEL COMP 4140 OR STEEL COMP E4340 OR STEEL COMP 6150 OR STEEL COMP 8735 OR STEEL COMP 8740 OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNC |
| AAJD | THREAD CLASS | 3A |
| AASB | FASTENER LENGTH | 1.573 INCHES MINIMUM AND 1.620 INCHES MAXIMUM |
| AASL | HEAD DIAMETER | 0.361 INCHES MINIMUM AND 0.381 INCHES MAXIMUM |
| AASU | HEAD HEIGHT | 0.103 INCHES MINIMUM AND 0.118 INCHES MAXIMUM |
| AAWB | SHANK UNTHREADED HOLE DIAMETER | 0.070 INCHES NOMINAL FIRST HOLE |
| AHYM | NOMINAL THREAD DIAMETER | 0.190 INCHES |
| CRTL | CRITICALITY CODE JUSTIFICATION | FEAT |
| CRZS | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.456 INCHES MINIMUM AND 1.503 INCHES MAXIMUM FIRST HOLE |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-8503 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-6098 MIL SPEC 4TH MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 5TH MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Components Related to NSN - 5305-00-801-7103, 5305008017103 | ||||
| 5305-01-187-9545 (5305011879545) | 5310-01-195-7885 (5310011957885) | 5325-01-626-6006 (5325016266006) | 5340-01-195-4720 (5340011954720) | |
| 5320-01-582-5694 (5320015825694) | 5331-00-651-4505 (5331006514505) | 5305-01-190-2186 (5305011902186) | 5330-00-831-6692 (5330008316692) | |
| 5307-00-533-9940 (5307005339940) | 5365-01-426-3812 (5365014263812) | 5360-01-650-4056 (5360016504056) | 5305-01-710-8488 (5305017108488) | |
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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