5305-01-113-1270 SCREW,MACHINE Index 5305-01-113-1272 SCREW,SELF-LOCKING

National Stock Number:
5305-01-113-1271

Federal Supply Class:
5305

National Item Identification Number:
011131271

Description:
SCREW,CAP,SOCKET HEAD

Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See BOLT, INTERNAL WRENCHING. Excludes SCREW, SHOULDER; and SCREW, MACHINE.


Manufacturer Information:
2585164-27880064NAVAL SHIP SYSTEMS COMMAND


Techincal Specification:
THREAD SERIES DESIGNATORUNC
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.307 INCHES MINIMUM AND
0.438 INCHES MAXIMUM
FASTENER LENGTH0.407 INCHES MINIMUM AND
0.438 INCHES MAXIMUM
MATERIALSTEEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTCADMIUM AND
CHROMATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HEAD STYLEPAN
HEAD DIAMETER0.473 INCHES MINIMUM AND
0.492 INCHES MAXIMUM
HEAD HEIGHT0.162 INCHES MINIMUM AND
0.175 INCHES MAXIMUM
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
LOCKING FEATUREPATCH OR
STRIP THREADS


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