5305-01-612-2030 SCREW,MACHINE 5305-01-612-1570 SCREW,CAP,HEXAGON HEAD

National Stock Number:
5305-01-612-1983

Federal Supply Class:
5305

National Item Identification Number:
016121983

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:
31C100KFCLM9R350MILITARY & COMMERCIAL FASTENERS CORP
MCF14609R350MILITARY & COMMERCIAL FASTENERS CORP


Techincal Specification:
COUNTERSINK ANGLE80.0 DEGREES MINIMUM AND 84.0 DEGREES MAXIMUM
FASTENER LENGTH0.97 INCHES MINIMUM AND 1.00 INCHES MAXIMUM
HARDNESS RATING39.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER0.600 INCHES MINIMUM AND 0.656 INCHES MAXIMUM
HEAD STYLEFLAT COUNTERSUNK
INTERNAL DRIVE STYLEHEXAGON
MATERIAL DOCUMENT AND CLASSIFICATIONASTM F835 STEEL ALLOY ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYSCREW,CAP,SOCKET HEAD,FLAT COUNTERSUNK,.312-18 UNC-3AX1.000 LONG
PROPRIETARY CHARACTERISTICSPACS
NOMINAL THREAD DIAMETER0.3125 INCHES
WIDTH ACROSS FLATS0.1875 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONCORROSION PROTECTIVE COATING PER MCF1496,MAGNI COATING MFR REF SINGLE TREATMENT RESPONSE OVERALL
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.690 INCHES NOMINAL
THREAD QUANTITY PER INCH18
THREAD SERIES DESIGNATORUNC


Click here to Register for Free 30-day Trial

© 2025 NSN-Now. All rights reserved.    Privacy Policy  |  Contact Us