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National Stock Number:
5305-01-437-1118
Federal Supply Class:
5305
National Item Identification Number:
014371118
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:
| A3255701 | 1EG13 | LAGUNA INDUSTRIES INC. | | A3255701 | 80063 | US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR |
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Techincal Specification:
| FASTENER LENGTH | 1.560 INCHES MINIMUM AND 1.680 INCHES MAXIMUM | | HEAD HEIGHT | 1.000 INCHES MINIMUM AND 1.240 INCHES MAXIMUM | | HEAD STYLE | THUMB NO. 6 | | MATERIAL DOCUMENT AND CLASSIFICATION | AISI -1010 ASSN STD ALL MATERIAL RESPONSES OR AISI -1018 ASSN STD ALL MATERIAL RESPONSES OVERALL | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | SHOULDER DIAMETER | 0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM FIRST SHOULDER | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | SHOULDER LENGTH | 1.000 INCHES MINIMUM AND 1.120 INCHES MAXIMUM FIRST SHOULDER | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.500 INCHES MINIMUM AND 0.620 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) | | WIDTH BETWEEN FLATS | 0.880 INCHES MINIMUM AND 1.120 INCHES MAXIMUM |
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