Product Details | CLOSE TOLERANCE SCREW

5305-01-594-6978 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.

Part Alternates: NAS11226H, NAS1122-6H, 5305-01-594-6978, 01-594-6978, 5305015946978, 015946978

Hardware and Abrasives | Screws

Supply Group (FSG) NSN Assign. NIIN
53 25 APR 2011 01-594-6978

Cross Reference | NSN 5305-01-594-6978

Part Number Cage Code Manufacturer
NAS1122-6H 80205 NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES

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Technical Data | NSN 5305-01-594-6978

Characteristic Specifications
THREAD SERIES DESIGNATOR UNJC
NOMINAL THREAD DIAMETER 0.1640 INCHES
THREAD QUANTITY PER INCH 32
THREAD CLASS 3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH 0.276 INCHES NOMINAL
FASTENER LENGTH 0.636 INCHES MINIMUM AND
MATERIAL STEEL COMP 4140 OR
MATERIAL DOCUMENT AND CLASSIFICATION MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR
SURFACE TREATMENT CADMIUM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-416,TYPE II,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HEAD STYLE FLAT FILLISTER
HEAD DIAMETER 0.265 INCHES MINIMUM AND
HEAD HEIGHT 0.088 INCHES MINIMUM AND
INTERNAL DRIVE STYLE OFFSET CRUCIFORM (TORQUE SET)
HOLE CONFIGURATION STYLE ROUND
HOLE TYPE DRILLED
HOLE QUANTITY 1
HOLE DIAMETER 0.034 INCHES MINIMUM AND
GRIP LENGTH 0.365 INCHES MINIMUM AND
GRIP DIAMETER 0.1625 INCHES MINIMUM AND
SURFACE FINISH 125.0 MICROINCHES HEAD
SPECIFICATION/STANDARD DATA 80205-NAS1121 THRU 1128 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
III PART NAME ASSIGNED BY CONTROLLING AGENCY SCREW,MACHINE-FLAT FILLISTER HEAD,CLOSE TOL.,SHORT THREAD,OFFSET CRUCIFORM

Restrictions/Controls & Freight Information | NSN 5305-01-594-6978

Category Code Description
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Electro-static Discharge Susceptible:ANo known Electrostatic Discharge (ESD) or Electromagnetic Interference (EMI) sensitivity
Precious Metals Indicator Code:AItem does not contain precious metal
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Automatic Data Processing Equipment:0Represents items with no ADP components. NOTE: Codes 1 through 6 are only to be used when the item is Automatic Data Processing Equipment (ADPE) in its entirety and is limited to the type meeting only one of the definitions for codes 1 through 6. (See code 9)
Category Code Description
No Freight Information