Product Details | CLOSE TOLERANCE SCREW

5305-01-591-1388 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: NAS112229, NAS1122-29, 5305-01-591-1388, 01-591-1388, 5305015911388, 015911388

Hardware and Abrasives | Screws

Supply Group (FSG) NSN Assign. NIIN
53 12 JAN 2011 01-591-1388

Cross Reference | NSN 5305-01-591-1388

Part Number Cage Code Manufacturer
NAS1122-29 80205 NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES

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Technical Data | NSN 5305-01-591-1388

Characteristic Specifications
THREAD SERIES DESIGNATOR UNJC
THREAD DIRECTION RIGHT-HAND
POINT STYLE FLAT
MATERIAL DOCUMENT AND CLASSIFICATION MIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL OR MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL OR MIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
INTERNAL DRIVE STYLE OFFSET CRUCIFORM (TORQUE SET)
THREAD QUANTITY PER INCH 32
GRIP LENGTH 1.812 NOMINAL INCHES
SURFACE TREATMENT CADMIUM OVERALL
MINIMUM TENSILE STRENGTH 2240 POUNDS PER SQUARE INCH
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-416, TYPE II, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
POINT DIAMETER 0.1625 INCHES MINIMUM AND 0.1635 INCHES MAXIMUM
THREAD LENGTH 0.276 INCHES NOMINAL
HEAD STYLE FLAT FILLISTER
HEAD HEIGHT 0.088 INCHES MINIMUM AND 0.102 INCHES MAXIMUM
FASTENER LENGTH 2.088 INCHES NOMINAL
MATERIAL STEEL COMP 4140 OVERALL OR STEEL COMP 4340 OVERALL OR STEEL COMP 8740 OVERALL
HEAD DIAMETER 0.265 INCHES MINIMUM AND 0.270 INCHES MAXIMUM
NOMINAL THREAD DIAMETER 0.164 INCHES
GRIP DIAMETER 0.255 NOMINAL MILS
THREAD CLASS 3A

Restrictions/Controls & Freight Information | NSN 5305-01-591-1388

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