Product Details | SQUARE PLAIN NUT

5310-00-012-0399 A nut, flat on top and bottom, having 4 flat sides. 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: MILB933TYPEB, 120399, 12384, 153684, 24D05, 55939, 5310-00-012-0399, 00-012-0399, 5310000120399, 000120399

Hardware and Abrasives | Nuts and Washers

Supply Group (FSG) NSN Assign. NIIN
53 01 JAN 1963 00-012-0399

Drawings & Photos | NSN 5310-00-012-0399


Cross Reference | NSN 5310-00-012-0399

Part Number Cage Code Manufacturer
120399 12204 DAIMLER CHRYSLER
120399 18876 U S ARMY AVIATION AND MISSILE COMMAND
120399 24617 GENERAL MOTORS CORP
120399 72582 MTU AMERICA INC.
120399 7X677 GENERAL MOTORS LLC DBA GENERAL MOTORS
12384 73370 HONEYWELL INTERNATIONAL INC DBA HONEYWELL DIV CONSUMER PRODUCTS
153684 73370 HONEYWELL INTERNATIONAL INC DBA HONEYWELL DIV CONSUMER PRODUCTS
153684 87405 PECOFACET OKLAHOMA LLC DIV PECOFACET OKLAHOMA LLC
24D05 12603 CLARK EQUIPMENT CO
24D05 77237 DANA OFF HIGHWAY PRODUCTS, LLC
55939 96046 CRANE PUMPS & SYSTEMS, INC.
MILB933TYPEB 81349 MILITARY SPECIFICATIONS PROMULGATED BY MILITARY

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Technical Data | NSN 5310-00-012-0399

Characteristic Specifications
THREAD SERIES UNC
NOMINAL THREAD SIZE 0.312 INCHES
THREAD QUANTITY PER INCH 18
THREAD CLASS 2B
THREAD DIRECTION RIGHT-HAND
MATERIAL STEEL OVERALL
SURFACE TREATMENT CADMIUM OR ZINC OVERALL
HARDNESS RATING NOT RATED
NUT STYLE A15 SQUARE
NUT HEIGHT 0.208 INCHES MINIMUM AND 0.225 INCHES MAXIMUM
WIDTH ACROSS FLATS 0.545 INCHES MINIMUM AND 0.5625 INCHES MAXIMUM
BEARING SURFACE TYPE FLAT
TEMP RATING NOT RATED
MANUFACTURERS CODE 81349
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE MILB933TYPEB

Restrictions/Controls & Freight Information | NSN 5310-00-012-0399

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: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
No Freight Information