Product Details | CLOSE TOLERANCE SCREW

5305-01-406-7906 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: AIC984410R, AIC984-4-10R, C7984410R, C7984-4-10R, 5305-01-406-7906, 01-406-7906, 5305014067906, 014067906

Hardware and Abrasives | Screws

Supply Group (FSG) NSN Assign. NIIN
53 12 JAN 1995 01-406-7906

Drawings & Photos | NSN 5305-01-406-7906


Demand History | NSN 5305-01-406-7906

Part Number Request Date QTY Origin
AIC984-4-10R 2024-04-98 2000 DIBBS
C7984-4-10R 2024-04-98 2000 DIBBS

Cross Reference | NSN 5305-01-406-7906

Part Number Cage Code Manufacturer
AIC984-4-10R 06725 SPS TECHNOLOGIES LLC DBA AIR INDUSTRIES
C7984-4-10R 81755 LOCKHEED MARTIN CORPORATION DBA LOCKHEED MARTIN AERONAUTICS

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Technical Data | NSN 5305-01-406-7906

Characteristic Specifications
THREAD SERIES DESIGNATOR UNJF
NOMINAL THREAD DIAMETER 0.250 INCHES
THREAD QUANTITY PER INCH 28
THREAD CLASS 3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH 0.345 INCHES MINIMUM AND 0.395 INCHES MAXIMUM
FASTENER LENGTH 0.980 INCHES MINIMUM AND 1.010 INCHES MAXIMUM
MATERIAL STEEL COMP H11 OVERALL
SURFACE TREATMENT CADMIUM OVERALL
HARDNESS RATING 46.0 ROCKWELL C MINIMUM AND 49.0 ROCKWELL C MAXIMUM OVERALL
HEAD STYLE C50 FLAT COUNTERSUNK
HEAD DIAMETER 0.477 INCHES MINIMUM AND 0.507 INCHES MAXIMUM
COUNTERSINK ANGLE 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
INTERNAL DRIVE STYLE D8 TORQUE SET
GRIP LENGTH 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM
GRIP DIAMETER 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM
SPECIFICATION/STANDARD DATA 81755-C7984-4-10R PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION

Restrictions/Controls & Freight Information | NSN 5305-01-406-7906

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