4820-01-478-2442 VALVE,GATE Index 4820-01-478-2444 SEAT,VALVE

National Stock Number:
5306-01-478-2443

Federal Supply Class:
5306

National Item Identification Number:
014782443

Description:
BOLT,INTERNAL WRENCHING

Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter, No. 10 (0.190 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.


Manufacturer Information:
03A5121W025NORTHROP GRUMMAN SYSTEMS CORP
03A512-4-15C1W025NORTHROP GRUMMAN SYSTEMS CORP
PBF1682-4-15C27624SPS TECHNOLOGIES LLC
CB9295-4-15C66530CLICK BOND INC


Techincal Specification:
THREAD SERIES DESIGNATORUNF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.403 INCHES NOMINAL
FASTENER LENGTH1.3230 INCHES MINIMUM AND
1.3430 INCHES MAXIMUM
MATERIALSTEEL CORROSION RESISTING OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5844 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MINIMUM TENSILE STRENGTH3490 POUNDS PER SQUARE INCH
HEAD STYLEFLAT COUNTERSUNK
HEAD DIAMETER0.485 INCHES MINIMUM AND
0.495 INCHES MAXIMUM
COUNTERSINK ANGLE129.0 DEGREES MINIMUM AND
131.0 DEGREES MAXIMUM
INTERNAL DRIVE STYLETORX
SPLINE MAJOR DIAMETER0.173 INCHES MINIMUM AND
0.183 INCHES MAXIMUM
SPECIAL FEATURESGRIP LENGTH MIN .9275 MAX .9475 GRIP DIAMETER MIN .2490 MAX .2495
SPEC/STD CONTROLLING DATA
MANUFACTURERS CODE1W025
MFR SOURCE CONTROLLING REFERENCE03A512-4-15C


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