|
|
|
National Stock Number:
5305-00-313-3020
Federal Supply Class:
5305
National Item Identification Number:
003133020
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:
| 239-115 | 02184 | OBRIEN GEAR CO | | BA19917 | 70408 | AT AND T CORP |
|
Techincal Specification:
| FASTENER LENGTH | 1.188 INCHES NOMINAL | | HEAD HEIGHT | 0.250 INCHES NOMINAL | | HEAD DIAMETER | 1.000 INCHES NOMINAL | | HEAD STYLE | KNURLED NO. 4 | | MATERIAL | STEEL COMP 416 OVERALL | | NOMINAL THREAD DIAMETER | 0.250 INCHES | | POINT LENGTH | 0.094 INCHES NOMINAL | | POINT STYLE | FLAT | | POINT CHAMFER ANGLE | 45.0 DEGREES NOMINAL | | SHOULDER DIAMETER | 0.375 INCHES NOMINAL FIRST SHOULDER | | SHOULDER SHAPE | ROUND FIRST SHOULDER | | SHOULDER LENGTH | 0.375 INCHES NOMINAL FIRST SHOULDER | | SURFACE TREATMENT | CHROMATE ZINC THREADS | | SURFACE TREATMENT | CHROMIUM HEAD | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 2A | | THREAD LENGTH | 0.250 INCHES MINIMUM | | THREAD SERIES DESIGNATOR | UNF | | THREAD QUANTITY PER INCH | 28 |
|
|