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National Stock Number:
5305-00-933-5639
Federal Supply Class:
5305
National Item Identification Number:
009335639
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:
| SMB451358 | 80063 | US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR |
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Techincal Specification:
| THREAD SERIES DESIGNATOR | UNC | | NOMINAL THREAD DIAMETER | 0.164 INCHES | | THREAD QUANTITY PER INCH | 32 | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.180 INCHES MINIMUM | | FASTENER LENGTH | 0.689 INCHES MINIMUM AND | | 0.691 INCHES MAXIMUM | | MATERIAL | STEEL COMP 303 OVERALL | | SURFACE TREATMENT | CHROMIUM OVERALL | | HEAD STYLE | KNURLED NO. 4 | | HEAD DIAMETER | 0.380 INCHES NOMINAL | | HEAD HEIGHT | 0.290 INCHES NOMINAL | | POINT STYLE | FLAT | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | SHOULDER DIAMETER | 0.116 INCHES NOMINAL FIRST SHOULDER | | SHOULDER LENGTH | 0.500 INCHES MINIMUM AND | | 0.520 INCHES MAXIMUM FIRST SHOULDER | | PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
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