5305-01-143-6524 SETSCREW Index 5305-01-143-6527 THUMBSCREW

National Stock Number:
5305-01-143-6526

Federal Supply Class:
5305

National Item Identification Number:
011436526

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:
1089209219207U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM


Techincal Specification:
THREAD SERIES DESIGNATORUNC
NOMINAL THREAD DIAMETER0.625 INCHES
THREAD QUANTITY PER INCH11
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.320 INCHES NOMINAL
FASTENER LENGTH1.280 INCHES NOMINAL
MATERIALSTEEL OVERALL
SURFACE TREATMENTCADMIUM AND
CHROMATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HEAD STYLETHUMB NO. 7
HEAD HEIGHT1.310 INCHES NOMINAL
WIDTH BETWEEN FLATS3.000 INCHES NOMINAL
POINT STYLEFLAT
SPECIAL FEATURESGROVE LOCATED 0.375 IN. FROM BEARING SURFACE OF HEAD WITH A DIA. OF 0.470 IN. MIN AND 0.475 IN. MAX


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