| Item Name | Screw Drive |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 00-253-5630 (002535630) |
| NCB Code | USA (00) |
| Manufacturer | Military Standards Corp, National Aerospace Standards Com, Federal Specifications |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| MS21318-54 | military standards corp | screw drive | RFQ |
| MS21318-54 | national aerospace standards com | screw drive | RFQ |
| MS21318-53 | military standards corp | screw drive | RFQ |
| FF-S-107C | federal specifications | screw drive | RFQ |
| MS21318-53 | national aerospace standards com | screw drive | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AASB | FASTENER LENGTH | 0.750 INCHES NOMINAL |
| AASK | HEAD STYLE | ROUND |
| AASL | HEAD DIAMETER | 0.382 INCHES MINIMUM AND 0.408 INCHES MAXIMUM |
| AASU | HEAD HEIGHT | 0.139 INCHES MINIMUM AND 0.153 INCHES MAXIMUM |
| AAVL | PILOT DIAMETER | 0.173 INCHES MINIMUM AND 0.177 INCHES MAXIMUM |
| AAVM | PILOT LENGTH | 0.078 INCHES NOMINAL |
| CBBL | FEATURES PROVIDED | CASEHARDENED |
| CRGF | NONMACHINE THREAD STYLE | DRIVE SCREW (TYPE U) |
| CTYF | NONMACHINE NOMINAL THREAD DIAMETER | 0.209 INCHES |
| 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 ALL TREATMENT RESPONSES OVERALL |
| Relevant Components for NSN - 5305-00-253-5630, 5305002535630 | ||||
| 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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