Part Number: 120000-4-4

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CONDITION:
NS
MONADNOCK COMPANY, THE60119
LOCKHEED MARTIN CORPORATION81755
ARCONIC GLOBAL FASTENERS & RINGS, INC.29372
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.520 INCHES NOMINAL
FASTENER LENGTH1.017 INCHES NOMINAL
INTERNAL DRIVE STYLEHEXAGON
NOMINAL THREAD DIAMETER0.250 INCHES
WIDTH ACROSS FLATS0.140 INCHES NOMINAL
THREAD QUANTITY PER INCH28
MINIMUM TENSILE STRENGTH180000 POUNDS PER SQUARE INCH
MATERIALSTEEL COMP 4140 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-5626 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTCADMIUM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIES DESIGNATORUNF
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.520 INCHES NOMINAL
FASTENER LENGTH1.017 INCHES NOMINAL
INTERNAL DRIVE STYLEHEXAGON
NOMINAL THREAD DIAMETER0.250 INCHES
WIDTH ACROSS FLATS0.140 INCHES NOMINAL
THREAD QUANTITY PER INCH28
MINIMUM TENSILE STRENGTH180000 POUNDS PER SQUARE INCH
MATERIALSTEEL COMP 4140 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-5626 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTCADMIUM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIES DESIGNATORUNF
An externally threaded fastener whose threaded portion is of one nominal diameter, No. 1 ( .19 IN.) (5 mm) or larger. It is designed with an internal socket or internal multiple spline for use with an internal driver. The head is beveled (conical) or cylindrical in shape. Items with cylindrical shaped heads must have an externally relieved body. A locking feature may be incorporated in the design of the head or threads. See also SCREW, CAP, SOCKET HEAD. Excludes SETSCREW; SCREW, SHOULDER; BOLT, SHOULDER; SCREW, EXTERNALLY RELIEVED BODY; BOLT, EXTERNALLY RELIEVED BODY; and SCREW, MACHINE.