Product Details | HEXAGON HEAD CAP SCREW

5305-01-021-1756 An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. Excludes BOLT,MACHINE; BOLT,EXTERNALLY RELIEVED BODY; BOLT,INTERNAL WRENCHING; and SCREW,CAP,SOCKET HEAD.

Part Alternates: 1170E51PC451, 4124A68H01, 5305-01-021-1756, 01-021-1756, 5305010211756, 010211756

Hardware and Abrasives | Screws

Supply Group (FSG) NSN Assign. NIIN
53 10 MAY 1976 01-021-1756

Drawings & Photos | NSN 5305-01-021-1756


Cross Reference | NSN 5305-01-021-1756

Part Number Cage Code Manufacturer
1170E51PC451 04808 CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION
4124A68H01 04808 CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION

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Technical Data | NSN 5305-01-021-1756

Characteristic Specifications
THREAD SERIES DESIGNATOR UNC
NOMINAL THREAD DIAMETER 0.250 INCHES
THREAD QUANTITY PER INCH 20
THREAD CLASS 2A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH 2.000 INCHES MAXIMUM
FASTENER LENGTH 2.125 INCHES NOMINAL
MATERIAL STEEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION FF-S-85,GR 5 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT CADMIUM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-416,TY 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING 23.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
MINIMUM TENSILE STRENGTH 120000 POUNDS PER SQUARE INCH
HEAD STYLE C1 HEXAGON
HEAD HEIGHT 0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM
WIDTH BETWEEN FLATS 0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM
HOLE CONFIGURATION STYLE E5 HEXAGON LONGITUDINAL HOLE
HOLE TYPE DRILLED
HOLE QUANTITY 1
HOLE DIAMETER 0.062 INCHES NOMINAL
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
CRITICALITY CODE JUSTIFICATION ZZZY
MANUFACTURERS CODE 04808
DESIGN CONTROL REFERENCE 4124A68H01

Restrictions/Controls & Freight Information | NSN 5305-01-021-1756

Category Code Description
Shelf-Life Code:0Nondeteriorative
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.
Controlled Inventory Item Code:UUNCLASSIFIED
Precious Metals Indicator Code:UPrecious metal type is unknown
Criticality Code:YThe item does not have a nuclear hardened feature but does have other critical feature(s) 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

Management | NSN 5305-01-021-1756

Category Code Description
Cognizance Codes1HConsumable material assigned to NAVICP MECH for inventory management
Naval Inventory Control Point, Mechanicsburg
Special Material IDX3Nuclear Reactor Plant (NRP) material under the technical cognizance of the NAVSEA 08 special designed, manufactured and/or treated for use in a NRP or controls thereof. This category includes all other NRP items which are not coded X2 or X4.
Issue Repair, or RequisitionBLSubmit/refer requisitions to NAVICP MECH. Centralized control for issue of repair parts for specific programs/equipments.
Special Material Content9 Non-Hazardous or Non-Sensitive Item, does not require hazardous or special handling, packaging or precautions
Source of SupplyNRPNAVICP-ERP
700 Robbins Avenue
Philadelphia, PA 19111-5098
AgencyDNDepartment of the Navy
Service OrganizationNU.S. Navy
ReparabilityMMedium Demand Velocity Items (consumables)
Acquisition Advice CodesVTERMINAL ITEM # Identifies items in stock, but future procurement is not authorized. Requisitions may continue to be submitted until stocks are exhausted. Preferred item National Stock Number is normally provided by application of the phrase: When Exhausted Use (NSN). Requisitions will be submitted in accordance with IMM/Service requisitioning procedures as applicable.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each