| Item Name | Thumbscrew |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 00-255-5481 (002555481) |
| NCB Code | USA (00) |
| Manufacturer | Catty H D Corp, Lockheed Martin Corporation, Carr Lane Manufacturing Company |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 2A |
| AASA | THREAD LENGTH | 0.547 INCHES MINIMUM |
| AASB | FASTENER LENGTH | 1.031 INCHES NOMINAL |
| AASK | HEAD STYLE | KNURLED NO. 1 |
| AASL | HEAD DIAMETER | 1.000 INCHES NOMINAL |
| AASU | HEAD HEIGHT | 0.312 INCHES NOMINAL |
| AAUY | POINT LENGTH | 0.359 INCHES NOMINAL |
| AAVA | POINT DIAMETER | 0.375 INCHES NOMINAL |
| ABQJ | POINT STYLE | UNIVERSAL |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| CBBL | FEATURES PROVIDED | CASEHARDENED |
| CMLP | THREAD QUANTITY PER INCH | 20 |
| CTLL | POINT SWIVEL INCLUDED ANGLE | 40.0 DEGREES NOMINAL |
| MATT | MATERIAL | STEEL OVERALL |
| SFTT | SURFACE TREATMENT | ZINC OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNC |
| Components Related to NSN - 5305-00-255-5481, 5305002555481 | ||||
| 5365-01-353-6485 (5365013536485) | 5365-01-314-0869 (5365013140869) | 5365-01-538-9415 (5365015389415) | 5330-01-360-0946 (5330013600946) | |
| 5330-01-260-4708 (5330012604708) | 5342-01-109-4185 (5342011094185) | 5331-01-608-0793 (5331016080793) | 5305-00-298-4681 (5305002984681) | |
| 5315-00-514-0217 (5315005140217) | 5330-01-528-4162 (5330015284162) | 5310-01-312-3813 (5310013123813) | 5360-00-969-4423 (5360009694423) | |
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