| Item Name | Screw Tapping |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 01-377-1057 (013771057) |
| NCB Code | USA (01) |
| Manufacturer | Military Standards Corp, Federal Specifications |
| MRC | Criteria | Characteristic |
|---|---|---|
| AASK | HEAD STYLE | PAN |
| ABQZ | INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| CTYF | NONMACHINE NOMINAL THREAD DIAMETER | 0.190 INCHES |
| MATT | MATERIAL | STEEL COMP 1016 OVERALL OR STEEL COMP 1018 OVERALL OR STEEL COMP 1019 OVERALL OR STEEL COMP 1021 OVERALL OR STEEL COMP 1022 OVERALL OR STEEL COMP 1524 OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM B633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| AASL | HEAD DIAMETER | 0.3570 INCHES MINIMUM AND 0.3730 INCHES MAXIMUM |
| CRGF | NONMACHINE THREAD STYLE | THRU SLOT (TYPE D) OR DOUBLE FLUTE (TYPE F) OR WIDE FLUTE (TYPE T) OR THRU SLOT (TYPE 6) |
| AASU | HEAD HEIGHT | 0.1220 INCHES MINIMUM AND 0.1330 INCHES MAXIMUM |
| SFTT | SURFACE TREATMENT | ZINC OVERALL AND CHROMATE OVERALL |
| AASB | FASTENER LENGTH | 0.469 INCHES MINIMUM AND 0.500 INCHES MAXIMUM |
| Relevant Components for NSN - 5305-01-377-1057, 5305013771057 | ||||
| 5320-01-318-6843 (5320013186843) | 5340-01-557-4760 (5340015574760) | 5340-00-336-3776 (5340003363776) | 5340-01-560-8528 (5340015608528) | |
| 5330-01-684-2979 (5330016842979) | 5310-01-185-8686 (5310011858686) | 5360-00-394-4491 (5360003944491) | 5320-01-267-6376 (5320012676376) | |
| 5315-00-432-8021 (5315004328021) | 5315-01-271-9296 (5315012719296) | 5340-01-353-1927 (5340013531927) | 5320-01-413-1816 (5320014131816) | |
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