Product Details | HEXAGON PLAIN NUT

5310-01-257-1065 A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see LOCKNUT, ELECTRICAL CONDUIT. See also LOCKNUT, TUBE FITTING. For items having a thickness (or height) exceeding two times the width across the flats, use POST, ELECTRICAL-MECHANICAL EQUIPMENT. (When height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.

Part Alternates: 1664C21H01, 5310-01-257-1065, 01-257-1065, 5310012571065, 012571065

Hardware and Abrasives | Nuts and Washers

Supply Group (FSG) NSN Assign. NIIN
53 12 JUN 1987 01-257-1065

Drawings & Photos | NSN 5310-01-257-1065


Demand History | NSN 5310-01-257-1065

Part Number Request Date QTY Origin
1664C21H01 2025-07-198 12 DIBBS
1664C21H01 2024-12-347 30 DIBBS
1664C21H01 2024-07-200 33 DIBBS
1664C21H01 2024-01-15 9 DIBBS
1664C21H01 2022-12-346 120 DIBBS
1664C21H01 2022-12-338 120 DIBBS
1664C21H01 2022-10-291 36 DIBBS
1664C21H01 2022-04-109 31 DIBBS
1664C21H01 2019-12-349 77 DIBBS
5310-01-257-1065 2017-09-256 52 DIBBS
5310-01-257-1065 2015-11-309 44 DIBBS
5310-01-257-1065 2012-10-281 40 DIBBS
5310-01-257-1065 2012-08-215 21 DIBBS
5310-01-257-1065 2012-06-160 38 DIBBS
5310-01-257-1065 2012-05-128 11 DIBBS
5310-01-257-1065 2012-03-90 23 DIBBS
5310-01-257-1065 2012-02-59 25 DIBBS
5310-01-257-1065 2011-12-356 4 DIBBS
5310-01-257-1065 2011-11-307 13 DIBBS
5310-01-257-1065 2011-09-270 7 DIBBS
5310-01-257-1065 2011-04-105 9 DIBBS
5310-01-257-1065 2010-12-342 10 DIBBS
5310-01-257-1065 2010-03-74 18 DIBBS
5310-01-257-1065 2009-12-365 46 DIBBS
5310-01-257-1065 2009-04-105 46 DIBBS
5310-01-257-1065 2009-02-36 7 DIBBS
5310-01-257-1065 2009-01-21 10 DIBBS

Cross Reference | NSN 5310-01-257-1065

Part Number Cage Code Manufacturer
1664C21H01 90099 NORTHROP GRUMMAN SYSTEMS CORPORATION DBA NORTHROP GRUMMAN MARINE SYSTEMS

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Technical Data | NSN 5310-01-257-1065

Characteristic Specifications
THREAD SERIES UNF
NOMINAL THREAD SIZE 0.875 INCHES
THREAD QUANTITY PER INCH 14
THREAD CLASS 2B
THREAD DIRECTION RIGHT-HAND
MATERIAL STEEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION 10705BV,CAGEC 90099 MFR REF SINGLE MATERIAL RESPONSE OVERALL
HARDNESS RATING NOT RATED
NUT STYLE A12 HEXAGON
NUT HEIGHT 0.600 INCHES NOMINAL
WIDTH ACROSS FLATS 1.269 INCHES MINIMUM AND 1.312 INCHES MAXIMUM
BEARING SURFACE TYPE CHAMFERED OR WASHER FACED
TEMP RATING NOT RATED

Restrictions/Controls & Freight Information | NSN 5310-01-257-1065

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: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.
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 573 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

Management | NSN 5310-01-257-1065

Category Code Description
Cognizance Codes9BNavy-owned stocks of DLA material
Naval Inventory Control Point, Mechanicsburg
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDNDepartment of the Navy
Service OrganizationNU.S. Navy
Acquisition Advice CodesZINSURANCE/NUMERIC STOCKAGE OBJECTIVE ITEM # Items which may be required occasionally or intermittently, and prudence requires that a nominal quantity of materiel be stocked due to the essentiality or the lead time of the item. 1. The item is centrally managed, stocked, and issued. 2. Requisitions will be submitted in accordance with IMM/Service requisitioning procedures.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each