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) | 00-815-4779 (008154779) |
| NCB Code | USA (00) |
| Manufacturer | Alcoa Fastening Systems Ltd, Lisi Aerospace Canada Corp, Collins Engineering Corp, Sps Technologies Inc, Apcom Inc, Satair Usa Inc, Durham Aircraft Service Inc, National Aerospace Standards Com, Air Industries Corp, Leonardo Spa Aerostructure Division, Nor Cal Supply Coinc, F And C Sales Inc, Eriks Southwest Inc, Birmingham Mfg Co, Nimikkeistokeskus Ncb Finland, Hi Shear Corporation |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| NAS1204-21 | alcoa fastening systems ltd | screw close tolerance | RFQ |
| NAS1204-21 | lisi aerospace canada corp | screw close tolerance | RFQ |
| NAS1204-21 | collins engineering corp | screw close tolerance | RFQ |
| NAS1204-21 | sps technologies inc | screw close tolerance | RFQ |
| NAS1204-21 | apcom inc | screw close tolerance | RFQ |
| NAS1204-21 | satair usa inc | screw close tolerance | RFQ |
| NAS1204-21 | durham aircraft service inc | screw close tolerance | RFQ |
| NAS1204-21 | national aerospace standards com | screw close tolerance | RFQ |
| NAS1204-21 | air industries corp | screw close tolerance | RFQ |
| NAS1204-21 | leonardo spa aerostructure division | screw close tolerance | RFQ |
| NAS1204-21 | nor cal supply coinc | screw close tolerance | RFQ |
| NAS1204-21 | f and c sales inc | screw close tolerance | RFQ |
| NAS1204-21 | eriks southwest inc | screw close tolerance | RFQ |
| NAS1204-21 | birmingham mfg co | screw close tolerance | RFQ |
| 10087749 | nimikkeistokeskus ncb finland | screw close tolerance | RFQ |
| NAS1204-21 | hi shear corporation | screw close tolerance | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASB | FASTENER LENGTH | 1.613 INCHES MINIMUM AND 1.643 INCHES MAXIMUM |
| AASK | HEAD STYLE | FLAT COUNTERSUNK |
| AASL | HEAD DIAMETER | 0.449 INCHES MINIMUM AND 0.507 INCHES MAXIMUM |
| AAUR | GRIP DIAMETER | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| CRSQ | COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| AAJD | THREAD CLASS | 3A |
| AASA | THREAD LENGTH | 0.291 INCHES MINIMUM AND 0.341 INCHES MAXIMUM |
| ABQZ | INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| ANEE | GRIP LENGTH | 1.302 INCHES MINIMUM AND 1.322 INCHES MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| CQBC | MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| CQFM | HARDNESS RATING | 36.0 ROCKWELL C MINIMUM OVERALL AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| MATT | MATERIAL | STEEL COMP 4140 OVERALL OR STEEL COMP E4340 OVERALL OR STEEL COMP 6150 OVERALL OR STEEL COMP 8735 OVERALL OR STEEL COMP 8740 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OVERALL OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OVERALL OR MIL-S-8503 MIL SPEC 3RD MATERIAL RESPONSE OVERALL OR MIL-S-6098 MIL SPEC 4TH MATERIAL RESPONSE OVERALL OR MIL-S-6049 MIL SPEC 5TH MATE |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| ZZZK | SPECIFICATION/STANDARD DATA | 80205-NAS1204 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Relevant Components for NSN - 5305-00-815-4779, 5305008154779 | ||||
| 5320-01-311-2514 (5320013112514) | 5365-01-606-7886 (5365016067886) | 5310-01-687-5946 (5310016875946) | 5331-01-345-2325 (5331013452325) | |
| 5331-01-137-6352 (5331011376352) | 5340-01-677-5187 (5340016775187) | 5310-01-215-1121 (5310012151121) | 5330-01-558-9303 (5330015589303) | |
| 5320-01-007-1870 (5320010071870) | 5365-00-542-0989 (5365005420989) | 5305-01-279-0723 (5305012790723) | 5315-01-181-8363 (5315011818363) | |
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