5305-00-402-3181 THUMBSCREW Index 5305-00-402-3183 THUMBSCREW

National Stock Number:
5305-00-402-3182

Federal Supply Class:
5305

National Item Identification Number:
004023182

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:
7019283-0090536LOCKHEED MARTIN CORP


Techincal Specification:
FASTENER LENGTH0.503 INCHES NOMINAL
HEAD DIAMETER0.625 INCHES NOMINAL
HEAD HEIGHT0.127 INCHES NOMINAL
HEAD STYLEKNURLED NO. 1
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 303 OVERALL
NOMINAL THREAD DIAMETER0.138 INCHES
POINT STYLEFLAT
SHOULDER DIAMETER0.220 INCHES MINIMUM AND 0.240 INCHES MAXIMUM FIRST SHOULDER
SHOULDER SHAPEROUND FIRST SHOULDER
SHOULDER LENGTH0.250 INCHES NOMINAL FIRST SHOULDER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-F-14072 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCHROMIUM OVERALL
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.200 INCHES MAXIMUM
THREAD QUANTITY PER INCH32
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)


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