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National Stock Number:
5305-01-350-4181
Federal Supply Class:
5305
National Item Identification Number:
013504181
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:
| 3C3044P05 | 07482 | GENERAL ELECTRIC COMPANY |
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Techincal Specification:
| FASTENER LENGTH | 2.300 INCHES NOMINAL | | HARDNESS RATING | 28.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM FASTENER | | HEAD STYLE | KNURLED NO. 2 | | MATERIAL | STEEL COMP 4130 OR STEEL COMP 4142 FASTENER | | NOMINAL THREAD DIAMETER | 0.375 INCHES | | SHOULDER LENGTH | 0.620 INCHES NOMINAL FIRST SHOULDER | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | POINT STYLE | FLAT | | SPECIAL FEATURES | HOLE IN SHOULDER 0.125 IN. DRILL THRU,0.160 IN. FROM END OF SHOULDER | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 2.175 INCHES NOMINAL | | THREAD SERIES DESIGNATOR | UNC | | THREAD QUANTITY PER INCH | 16 |
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