5305-01-188-9640, SCREW,CLOSE TOLERANCE

National Stock Number:
5305-01-188-9640

Federal Supply Class:
5305

National Item Identification Number:
011889640

Description:
SCREW,CLOSE TOLERANCE

Detail:
A SCREW, MACHINE or SCREW, CAP, SOCKET HEAD whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 IN.) (0.025 mm) or less of a specific diameter for items (1.000 IN.) (25 mm) or less in diameter. Items over (1.000 IN.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 IN.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 IN.) (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the Screw Thread Standards, FED STD H28 and/or other nationally recognized standards. The head is designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.

Manufacturer Information:

122968A3-40D	80539	SPS TECHNOLOGIES, LLC
GB510DC3-40D	1FY45	AERO MECHANICAL FASTENING SYSTEMS INC
HR218-3-40D	03950	NAVAL INVENTORY CONTROL POINT MECHANICSBURG
GB510DC3-40D	26512	NORTHROP GRUMMAN SYSTEMS CORPORATION
GB510DC3-40D	58845	ABOUNDING SECURITY INC DIV OF MAA CORP
HR218-3-40D	73197	HI-SHEAR CORPORATION
SC1826-3-40D	06950	HOWMET GLOBAL FASTENING SYSTEMS INC
PBF1357A3-40D	27624	SPS TECHNOLOGIES LLC
MATS111A3-40D	58845	ABOUNDING SECURITY INC DIV OF MAA CORP
MATS111AD3-40	58845	ABOUNDING SECURITY INC DIV OF MAA CORP
HR218-3-40D	L4528	LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC

Techincal Specification:

COUNTERSINK ANGLE	99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER	2.742 INCHES MINIMUM AND 2.752 INCHES MAXIMUM FIRST HOLE
FASTENER LENGTH	2.848 INCHES MINIMUM AND 2.878 INCHES MAXIMUM
GRIP DIAMETER	0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM
GRIP LENGTH	2.490 INCHES MINIMUM AND 2.510 INCHES MAXIMUM
HEAD DIAMETER	0.258 INCHES MINIMUM AND 0.305 INCHES MAXIMUM
HEAD STYLE	FLAT COUNTERSUNK
INTERNAL DRIVE STYLE	OFFSET CRUCIFORM (TORQUE SET)
PART NAME ASSIGNED BY CONTROLLING AGENCY	NAVY SPECIAL PROJECT
MATERIAL	STEEL COMP E4340 OR STEEL COMP 4140 OR STEEL COMP 8735 OR STEEL COMP 8740 OR STEEL COMP 6150 OVERALL
MINIMUM TENSILE STRENGTH	160000 POUNDS PER SQUARE INCH
NOMINAL THREAD DIAMETER	0.190 INCHES
SHANK UNTHREADED HOLE DIAMETER	0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM FIRST HOLE
SURFACE FINISH	32.0 MICROINCHES BEARING SURFACE OF HEAD
SURFACE FINISH	32.0 MICROINCHES GRIP
SURFACE FINISH	32.0 MICROINCHES THREADS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416 TY2 CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT	CADMIUM AND CHROMATE OVERALL
THREAD CLASS	3A
THREAD LENGTH	0.338 INCHES MINIMUM AND 0.388 INCHES MAXIMUM
THREAD DIRECTION	RIGHT-HAND
THREAD QUANTITY PER INCH	32
THREAD SERIES DESIGNATOR	UNJF

Click here to Register for Free 30-day Trial