6680-00-330-5894 FLOAT WELL Index 5355-00-330-5902 KNOB

National Stock Number:
5305-00-330-5896

Federal Supply Class:
5305

National Item Identification Number:
003305896

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:
34785-370210HONEYWELL INTERNATIONAL INC.
34785-372599ALLIEDSIGNAL INC DBA ALLIED-SIGNAL AEROSPACE CO


Techincal Specification:
THREAD SERIES DESIGNATORUNF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH16
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH2.875 INCHES MINIMUM AND
2.885 INCHES MAXIMUM
FASTENER LENGTH3.733 INCHES MINIMUM AND
3.750 INCHES MAXIMUM
MATERIALSTEEL COMP 1144 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTCADMIUM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING24.0 ROCKWELL C MINIMUM AND
32.0 ROCKWELL C MAXIMUM OVERALL
HEAD STYLEKNURLED NO. 1
HEAD DIAMETER1.035 INCHES MINIMUM AND
1.041 INCHES MAXIMUM
HEAD HEIGHT0.090 INCHES MINIMUM AND
0.110 INCHES MAXIMUM
POINT STYLEFLAT
POINT LENGTH0.028 INCHES MINIMUM AND
0.030 INCHES MAXIMUM
POINT DIAMETER0.186 INCHES MINIMUM AND
0.187 INCHES MAXIMUM
POINT CHAMFER ANGLE45.0 DEGREES NOMINAL
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT


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