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National Stock Number:
5305-01-128-2481
Federal Supply Class:
5305
National Item Identification Number:
011282481
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:
| 13143689-1 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND | | 13143689-1 | 26772 | WEGO PRECISION MACHINE, INC. | | 13143689-1 | 9X996 | SOUTHLAND PRECISION INC |
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Techincal Specification:
| FASTENER LENGTH | 10.695 INCHES MINIMUM AND 10.815 INCHES MAXIMUM | | HEAD DIAMETER | 0.800 INCHES NOMINAL | | HEAD HEIGHT | 1.000 INCHES NOMINAL | | HEAD STYLE | DOUBLE CHAMFER | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 303 OVERALL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | POINT STYLE | OVAL | | SHOULDER DIAMETER | 0.625 INCHES NOMINAL FIRST SHOULDER | | SHOULDER LENGTH | 6.840 INCHES MINIMUM AND 6.940 INCHES MAXIMUM FIRST SHOULDER | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | SPECIAL FEATURES | THREADED AREA 0.120 IN. LG; 5/16-24; 1.120 IN. FROM SHOULDER; MEDIUM DIAMOND KNURL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 2A | | THREAD LENGTH | 0.500 INCHES NOMINAL | | THREAD SERIES DESIGNATOR | UNC | | THREAD QUANTITY PER INCH | 20 |
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