5305-00-638-0957 THUMBSCREW Index 5305-00-638-0972 THUMBSCREW

National Stock Number:
5305-00-638-0966

Federal Supply Class:
5305

National Item Identification Number:
006380966

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:
73B69126916NORTHROP GRUMMAN SYSTEMS CORPORATION


Techincal Specification:
FASTENER LENGTH0.516 INCHES NOMINAL
HEAD DIAMETER0.875 INCHES NOMINAL
HEAD HEIGHT0.437 INCHES NOMINAL
HEAD STYLEKNURLED NO. 1
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.216 INCHES
POINT STYLEFLAT
SPECIAL FEATURESHEAD UNDERCUT TO 0.750 IN. DIA BY 0.250 IN. DEPTH
SURFACE TREATMENTCOPPER AND OXIDE OVERALL
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.407 INCHES MINIMUM
THREAD QUANTITY PER INCH24
THREAD SERIES DESIGNATORUNC


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