| Item Name | Screw Shoulder |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 01-285-5980 (012855980) |
| NCB Code | USA (01) |
| Manufacturer | National Aerospace Standards Com, Syn Tech Systems Inc, Military Standards Corp, Century Fasteners Corp |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| MS51975-62 | national aerospace standards com | screw shoulder | RFQ |
| 8644790-62 | syn tech systems inc | screw shoulder | RFQ |
| MS51975-62 | military standards corp | screw shoulder | RFQ |
| 8644790-62 | century fasteners corp | screw shoulder | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.820 INCHES MINIMUM AND 0.880 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 2.830 INCHES MINIMUM AND 2.870 INCHES MAXIMUM |
| AASK | HEAD STYLE | FLAT CHAMFER |
| AASL | HEAD DIAMETER | 1.287 INCHES MINIMUM AND 1.312 INCHES MAXIMUM |
| AASU | HEAD HEIGHT | 0.610 INCHES MINIMUM AND 0.635 INCHES MAXIMUM |
| AATN | SHOULDER DIAMETER | 0.996 INCHES MINIMUM FIRST SHOULDER AND 0.998 INCHES MAXIMUM FIRST SHOULDER |
| AATX | SHOULDER LENGTH | 1.990 INCHES MINIMUM FIRST SHOULDER AND 2.010 INCHES MAXIMUM FIRST SHOULDER |
| AAWU | SINGLE SHEAR STRENGTH | 25000 POUNDS PER SQUARE INCH |
| ABQZ | INTERNAL DRIVE STYLE | HEXAGON |
| AHYM | NOMINAL THREAD DIAMETER | 0.750 INCHES |
| ASDB | WIDTH ACROSS FLATS | 0.503 INCHES MINIMUM AND 0.510 INCHES MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 10 |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| FEAT | SPECIAL FEATURES | PLAIN OR KNURL HEAD; NECK BETWEEN SHOULDER AND THREADS 0.150 LG.; 0.605-0.638 DIA |
| MATT | MATERIAL | STEEL OVERALL |
| 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 | UNC |
| Relevant Components for NSN - 5305-01-285-5980, 5305012855980 | ||||
| 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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