Product Details | THUMBSCREW

5305-01-088-7955 An externally threaded fastener whose threaded portion is of one nominal diameter. It may have an unthreaded portion with a diameter less than, equal to, or greater than the diameter of the threaded portion. It has either a vertically flattened, circular knurled, or wing type head, all of which are designed for rotation by the thumb and fingers. For items having wrenching facilities such as socket recess, multiple spline or slot heads, use SCREW (as modified) or BOLT (as modified).

Part Alternates: 810AS1275, 5305-01-088-7955, 01-088-7955, 5305010887955, 010887955

Hardware and Abrasives | Screws

Supply Group (FSG) NSN Assign. NIIN
53 19 JAN 1980 01-088-7955

Drawings & Photos | NSN 5305-01-088-7955


Cross Reference | NSN 5305-01-088-7955

Part Number Cage Code Manufacturer
810AS1275 30003 NAVAL AIR SYSTEMS COMMAND

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Technical Data | NSN 5305-01-088-7955

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 0.630 INCHES NOMINAL
FASTENER LENGTH 1.000 INCHES NOMINAL
MATERIAL STEEL COMP 303 OR STEEL COMP 303SE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION ASTM A582 ASSN STD ALL MATERIAL RESPONSES OVERALL
SURFACE TREATMENT PASSIVATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-35 CL1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HEAD STYLE C69 KNURLED NO. 4
HEAD DIAMETER 0.500 INCHES NOMINAL
HEAD HEIGHT 0.250 INCHES NOMINAL
POINT STYLE F19 FLAT
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY 4
FIRST DIAMETER FROM HEAD 0.380 INCHES NOMINAL
SECOND DIAMETER FROM HEAD 0.280 INCHES NOMINAL
THIRD DIAMETER FROM HEAD 0.380 INCHES NOMINAL
FOURTH DIAMETER FROM HEAD 0.175 INCHES MINIMUM AND 0.185 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER 0.178 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER 0.240 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER 0.303 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FOURTH DIAMETER 0.373 INCHES NOMINAL

Restrictions/Controls & Freight Information | NSN 5305-01-088-7955

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.
Precious Metals Indicator Code:UPrecious metal type is unknown
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Category Code Description
NMF Description 093486 BOLTS,NUTS OR SCREWS, NOI (SUB 3)
Less than car load rating
Less than truck load rating W Rating Variable
Water commodity Code 713 unknown
Originating Activity Code KZ Defense Supply Center Philadelphia
Philadelphia, PA 19101
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity B Construction materials: Includes paint and related materials, prefabricated building, wood products, metal and composition materials and their products, commercial hardware and miscellaneous items, cement, asphalt, building maintenance materials.
Air Special Handling Z No special handling required.
Special Handling Code 9 unknonwn
HAZMAT
Type of Cargo Z No special type of cargo code applicable