Product Details | HEXAGON PLAIN NUT

5310-00-257-5545 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: 272S6000008015, 272S6000008-015, 5310-00-257-5545, 00-257-5545, 5310002575545, 002575545

Hardware and Abrasives | Nuts and Washers

Supply Group (FSG) NSN Assign. NIIN
53 26-MAR-71 00-257-5545

Drawings & Photos | NSN 5310-00-257-5545


Cross Reference | NSN 5310-00-257-5545

Part Number Cage Code Manufacturer
272S6000008-015 38579 MARTIN A ROY
340984 98897 LOCKHEED MARTIN CORPORATION DBA LOCKHEED MARTIN AERONAUTICS
P061-8D 81755 LOCKHEED MARTIN CORPORATION DBA LOCKHEED MARTIN AERONAUTICS

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Technical Data | NSN 5310-00-257-5545

Characteristic Specifications
THREAD SERIES UNF
NOMINAL THREAD SIZE 0.750 INCHES
THREAD QUANTITY PER INCH 16
THREAD CLASS 3B
THREAD DIRECTION RIGHT-HAND
MATERIAL ALUMINUM ALLOY 2024 OVERALL
SURFACE TREATMENT ANODIZE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION MIL-A-8625,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING NOT RATED
NUT STYLE A12 HEXAGON
NUT HEIGHT 0.312 INCHES NOMINAL
WIDTH ACROSS FLATS 0.996 INCHES MINIMUM AND 1.003 INCHES MAXIMUM
HOLE CONFIGURATION STYLE H2 CONFIGURATION B
HOLE TYPE AND QUANTITY 3 DRILLED
DRILLED HOLE DIAMETER 0.070 INCHES NOMINAL
BEARING SURFACE TYPE CHAMFERED
COUNTERSINK ANGLE 90.0 DEGREES NOMINAL NUT
TEMP RATING NOT RATED
MANUFACTURERS CODE 38579
DESIGN CONTROL REFERENCE 272S6000008-015

Restrictions/Controls & Freight Information | NSN 5310-00-257-5545

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.
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