| Item Name | Thumbscrew |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 00-638-7534 (006387534) |
| NCB Code | USA (00) |
| Manufacturer | Realist Inc, Warren Industries Incorporated |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 2A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.625 INCHES MINIMUM |
| AASB | FASTENER LENGTH | 1.188 INCHES NOMINAL |
| AASK | HEAD STYLE | THUMB NO. 1 |
| AASU | HEAD HEIGHT | 0.625 INCHES NOMINAL |
| AATB | WIDTH BETWEEN FLATS | 1.875 INCHES NOMINAL |
| AATN | SHOULDER DIAMETER | 0.344 INCHES NOMINAL FIRST SHOULDER |
| AATX | SHOULDER LENGTH | 0.188 INCHES NOMINAL FIRST SHOULDER |
| ABQJ | POINT STYLE | FLAT |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| MATT | MATERIAL | COPPER ALLOY OVERALL |
| PRMT | PRECIOUS MATERIAL | SILVER |
| SFTT | SURFACE TREATMENT | SILVER OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNF |
| Components Related to NSN - 5305-00-638-7534, 5305006387534 | ||||
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| 5365-01-446-8973 (5365014468973) | 5340-01-487-3594 (5340014873594) | 5340-01-557-7739 (5340015577739) | 5331-00-625-8831 (5331006258831) | |
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