|
|
|
National Stock Number:
5305-00-655-9915
Federal Supply Class:
5305
National Item Identification Number:
006559915
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).
|
Manufacturer Information:
| 8195568 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND | | D60 | 83385 | MICRODOT MFG INC GREER-CENTRAL DIV |
|
Techincal Specification:
| FASTENER LENGTH | 0.675 INCHES MINIMUM AND 0.680 INCHES MAXIMUM | | HEAD HEIGHT | 0.508 INCHES MINIMUM AND 0.575 INCHES MAXIMUM | | HEAD STYLE | WING NO. 4 | | MATERIAL | STEEL OVERALL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | POINT STYLE | FLAT | | SHOULDER DIAMETER | 0.440 INCHES MINIMUM AND 0.460 INCHES MAXIMUM FIRST SHOULDER | | SHOULDER LENGTH | 0.070 INCHES MINIMUM AND 0.075 INCHES MAXIMUM FIRST SHOULDER | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | WIDTH BETWEEN FLATS | 1.031 INCHES MINIMUM AND 1.094 INCHES MAXIMUM | | SURFACE TREATMENT | CADMIUM OR CHROMIUM OVERALL | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.675 INCHES MINIMUM AND 0.680 INCHES MAXIMUM | | THREAD QUANTITY PER INCH | 20 | | THREAD SERIES DESIGNATOR | UNC |
|
|