| Item Name | Screw Tapping |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 01-576-8723 (015768723) |
| NCB Code | USA (01) |
| Manufacturer | National Aerospace Standards Com |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| NASM51850-98 | national aerospace standards com | screw tapping | RFQ |
| MS51850-98 | national aerospace standards com | screw tapping | RFQ |
| NASM51850 | national aerospace standards com | screw tapping | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AASB | FASTENER LENGTH | 1.000 INCHES NOMINAL |
| AASK | HEAD STYLE | HEXAGON |
| AASU | HEAD HEIGHT | 0.172 INCHES MINIMUM AND 0.190 INCHES MAXIMUM |
| AATB | WIDTH BETWEEN FLATS | 0.367 INCHES MINIMUM AND 0.375 INCHES MAXIMUM |
| ABQZ | INTERNAL DRIVE STYLE | SLOT |
| AGAV | III END ITEM IDENTIFICATION | NSN 2320-01-552-7781 TRUCK, VAN |
| ASDB | WIDTH ACROSS FLATS | 0.367 INCHES MINIMUM AND 0.375 INCHES MAXIMUM |
| CRGF | NONMACHINE THREAD STYLE | GIMLET POINT (TYPE A, AB OR BA) |
| CTYF | NONMACHINE NOMINAL THREAD DIAMETER | 0.250 INCHES |
| CXCY | III PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW,TAPPING-THREAD FORMING, TYPE AB, HEXAGON HEAD, SLOTTED |
| FEAT | SPECIAL FEATURES | THREADS PER INCH 14; WIDTH ACROSS CORNERS MIN .409; SLOT WIDTH MAX .075, MIN .064; SLOT DEPTH MAX .101, MIN 0.83 |
| MATT | MATERIAL | STEEL CORROSION RESISTING OVERALL |
| SFTT | SURFACE TREATMENT | PASSIVATE OVERALL |
| ZZZK | SPECIFICATION/STANDARD DATA | 80205-MS51850-98 NATIONAL STD/SPEC |
| Relevant Components for NSN - 5305-01-576-8723, 5305015768723 | ||||
| 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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