NSN 5305-01-190-6655

Part Details | THUMBSCREW

5305-01-190-6655 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).

Alternate Parts: 12292635, 5305-01-190-6655, 01-190-6655, 5305011906655, 011906655

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53SEP 29, 198401-190-665506673 ( THUMBSCREW )
REFERENCE DRAWINGS & PICTURES

HEXAGON COUNTERSUNK UNDERCUT

OVAL

Cross Reference | NSN 5305-01-190-6655
Part Number Cage Code Manufacturer
1229263519207U S ARMY TANK AUTOMOTIVE COMMANDAMSTA-IM-MM
Technical Data | NSN 5305-01-190-6655
Characteristic Specifications
THREAD SERIES DESIGNATOR UNC
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH20
THREAD CLASS2A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.500 INCHES NOMINAL
FASTENER LENGTH0.630 INCHES NOMINAL
HEAD STYLE6 HEXAGON COUNTERSUNK UNDERCUT
HEAD DIAMETER0.620 INCHES NOMINAL
HEAD HEIGHT0.250 INCHES NOMINAL
POINT STYLE2 OVAL
SPECIAL FEATURESFASTNER CHAMFERED 0.05IN BY 45 DEGREES; HEAD IS 96 DP RAISED DIAMOND KNURL