4810-00-119-9227 VALVE Index 5305-00-119-9229 THUMBSCREW

National Stock Number:
5305-00-119-9228

Federal Supply Class:
5305

National Item Identification Number:
001199228

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:
1C2761P1107482GENERAL ELECTRIC COMPANY


Techincal Specification:
FASTENER LENGTH0.440 INCHES MINIMUM AND 0.560 INCHES MAXIMUM
HEAD DIAMETER0.740 INCHES MINIMUM AND 0.780 INCHES MAXIMUM
HEAD HEIGHT0.240 INCHES MINIMUM AND 0.280 INCHES MAXIMUM
HEAD STYLEKNURLED NO. 1
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 4140 OVERALL
NOMINAL THREAD DIAMETER0.312 INCHES
POINT STYLEPOINTLESS
SHOULDER DIAMETER0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM FIRST SHOULDER
SHOULDER LENGTH0.040 INCHES MINIMUM AND 0.080 INCHES MAXIMUM FIRST SHOULDER
SHOULDER SHAPEROUND FIRST SHOULDER
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.300 INCHES MINIMUM AND 0.320 INCHES MAXIMUM
THREAD QUANTITY PER INCH18
THREAD SERIES DESIGNATORUNC


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