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National Stock Number:
5305-00-133-1052
Federal Supply Class:
5305
National Item Identification Number:
001331052
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:
| 9979366 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND |
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Techincal Specification:
| FASTENER LENGTH | 1.380 INCHES MINIMUM AND 1.500 INCHES MAXIMUM | | HEAD DIAMETER | 0.970 INCHES MINIMUM AND 1.030 INCHES MAXIMUM | | HEAD HEIGHT | 0.280 INCHES MINIMUM AND 0.340 INCHES MAXIMUM | | HEAD STYLE | KNURLED NO. 1 | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-B-637,COMP 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | COPPER ALLOY 464 OVERALL | | NOMINAL THREAD DIAMETER | 0.312 INCHES | | POINT STYLE | FLAT | | SPECIAL FEATURES | UNTHREADED PORTION 0.160 IN. MIN DIA 0.220 IN. MAX DIA BY 1.327 IN. MIN LG,1.453 IN. MAX LG | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.047 INCHES MINIMUM AND 0.053 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 18 | | THREAD SERIES DESIGNATOR | UNC |
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