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National Stock Number:
5305-00-639-1120
Federal Supply Class:
5305
National Item Identification Number:
006391120
Description:
THUMBSCREW
Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter. It may have an unthreaded portion with a diameter less than, equal to, or greater than the diameter of the threaded portion. It has either a vertically flattened, circular knurled, or wing type head, all of which are designed for rotation by the thumb and fingers. For items having wrenching facilities such as socket recess, multiple spline or slot heads, use SCREW (as modified) or BOLT (as modified).
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Manufacturer Information:
| 11542P12 | 06650 | BELL AND HOWELL PHILLIPSBURG CO CORPORATE OFFICES | | 311-291B | 21900 | FEDERAL DIV OF VICTOREEN INSTRUMENT CO INC | | 611542 | 06650 | BELL AND HOWELL PHILLIPSBURG CO CORPORATE OFFICES | | SCB77593 | 80063 | US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR |
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Techincal Specification:
| FASTENER LENGTH | 0.527 INCHES NOMINAL | | HEAD DIAMETER | 0.500 INCHES NOMINAL | | HEAD HEIGHT | 0.234 INCHES NOMINAL | | HEAD STYLE | KNURLED NO. 1 | | MATERIAL | STEEL COMP 1213 OVERALL | | NOMINAL THREAD DIAMETER | 0.164 INCHES | | POINT STYLE | FLAT | | SHOULDER DIAMETER | 0.375 INCHES NOMINAL FIRST SHOULDER | | SHOULDER LENGTH | 0.027 INCHES NOMINAL FIRST SHOULDER | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | SURFACE TREATMENT | CHROMIUM OVERALL | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.125 INCHES MINIMUM | | THREAD QUANTITY PER INCH | 32 | | THREAD SERIES DESIGNATOR | UNC |
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