| Item Name | Screw Tapping |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 01-078-5072 (010785072) |
| NCB Code | USA (01) |
| Manufacturer | C Systems Llc, Military Standards Corp, Federal Specifications |
| MRC | Criteria | Characteristic |
|---|---|---|
| AASB | FASTENER LENGTH | 0.950 INCHES MINIMUM AND 1.000 INCHES MAXIMUM |
| AASK | HEAD STYLE | HEXAGON EXTENDED WASHER |
| AASU | HEAD HEIGHT | 0.307 INCHES MINIMUM AND 0.358 INCHES MAXIMUM |
| AATB | WIDTH BETWEEN FLATS | 0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM |
| AATC | EXTENDED WASHER DIAMETER | 0.720 INCHES MINIMUM AND 0.780 INCHES MAXIMUM |
| AATD | EXTENDED WASHER THICKNESS | 0.037 INCHES MINIMUM AND 0.063 INCHES MAXIMUM |
| ABQZ | INTERNAL DRIVE STYLE | W/O INTERNAL DRIVE |
| CBBL | FEATURES PROVIDED | CASEHARDENED |
| CQBC | MINIMUM TENSILE STRENGTH | 150000 POUNDS PER SQUARE INCH |
| CQFM | HARDNESS RATING | 32.0 ROCKWELL C MINIMUM OVERALL AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| CRGF | NONMACHINE THREAD STYLE | BLUNT (TYPE TT) |
| CTYF | NONMACHINE NOMINAL THREAD DIAMETER | 0.375 INCHES |
| MATT | MATERIAL | STEEL COMP 4037 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL OR MIL-C-81562 TY 2 CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | B TYPE |
| Relevant Components for NSN - 5305-01-078-5072, 5305010785072 | ||||
| 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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