NSN 5310-01-133-5837 BFN725C6M, ST3M725C6M, F504056

Product Details | PLATE SELF-LOCKING NUT

5310-01-133-5837 A nut with a flanged base of varied shapes which may be plain or mounted by rivets, bolts, welding or integral prongs. An integral feature is incorporated for locking on the threads of a mating member.

Part Alternates: BFN725C6M, ST3M725C6M, F504056, F50405-6, 10109686 , 5310-01-133-5837, 01-133-5837, 5310011335837, 011335837

Hardware and Abrasives | Nuts and Washers

Supply Group (FSG)	NSN Assign.	NIIN	Item Name Code (INC)
53	16 JUN 1982	01-133-5837	05280 ( NUT, SELF-LOCKING, PLATE )

Drawings & Photos | NSN 5310-01-133-5837

Part Number	Request Date	QTY	Origin
BFN725C6M	2025-11-317	4	DIBBS
F50405-6	2025-11-317	4	DIBBS
ST3M725C6M	2025-11-317	4	DIBBS
BFN725C6M	2023-12-353	13	DIBBS
F50405-6	2023-12-353	13	DIBBS
ST3M725C6M	2023-12-353	13	DIBBS
BFN725C6M	2022-08-221	57	DIBBS
F50405-6	2022-08-221	57	DIBBS
ST3M725C6M	2022-08-221	57	DIBBS
ST3M725C6M	2020-05-126	5	US
5310-01-133-5837	2020-04-105	5	US
ST3M725C6M	2020-04-100	4	US
5310-01-133-5837	2020-04-100	4	US
5310-01-133-5837	2020-04-100	4	United States
ST3M725C6M	2015-05-127	50	United States
ST3M725C6M	2015-05-125	50	United States
ST3M725C6M	2015-03-84	25	United States
ST3M725C6M	2014-11-321	35	Mexico
5310-01-133-5837	2009-06-161	200	DIBBS
5310-01-133-5837	2009-03-85	4	DIBBS
5310-01-133-5837	2009-01-06	66	DIBBS
5310-01-133-5837	2008-06-155	20	DIBBS

Cross Reference | NSN 5310-01-133-5837

Part Number	Cage Code	Manufacturer
BFN725C6M	27238	BRISTOL INDUSTRIES
F50405-6	15653	ALCOA GLOBAL FASTENERS, INC.
ST3M725C6M	76301	BOEING COMPANY, THE DBA BOEING

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Related Products | NSN 5310-01-133-5837

5310-01-133-5838, 5310-01-133-5840, 5310-01-133-5843, 5310-01-133-5844, 5310-01-133-5845

Technical Data | NSN 5310-01-133-5837

Characteristic	Specifications
THREAD SERIES	UNJF
NOMINAL THREAD SIZE	0.375 INCHES
THREAD QUANTITY PER INCH	24
THREAD CLASS	3B
THREAD DIRECTION	RIGHT-HAND
MATERIAL	IRON ALLOY 660 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT	PASSIVATE OVERALL
HARDNESS RATING	NOT RATED
NUT STYLE	A116 PLATE
NUT LENGTH	1.292 INCHES MAXIMUM
NUT HEIGHT	0.630 INCHES MAXIMUM
PLATE THICKNESS	0.027 INCHES MINIMUM AND 0.037 INCHES MAXIMUM
PLATE WIDTH	0.770 INCHES MAXIMUM
LOCKING FEATURE	PREVAILING TORQUE ALL METAL DESIGN
NUT COUNTERBORE DEPTH	0.261 INCHES MINIMUM FIRST END
COUNTERBORE DIAMETER	0.437 INCHES MINIMUM FIRST END
LUBRICATION	DRY FILM LUBRICANT
NUT MOUNTING PROVISION	STRAIGHT HOLES
MOUNTING HOLE ARRANGEMENT STYLE	F38 2 HOLES
MOUNTING HOLE DIAMETER	0.130 INCHES MINIMUM AND 0.135 INCHES MAXIMUM
DISTANCE FROM APERTURE CENTER TO MOUNTING HOLE CENTER	0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM
CENTER TO CENTER DISTANCE BETWEEN MOUNTING HOLES ALONG LENGTH	0.998 INCHES MINIMUM AND 1.002 INCHES MAXIMUM
TEMP RATING	NOT RATED
FEATURES PROVIDED	FLOATING NUT

Restrictions/Controls & Freight Information | NSN 5310-01-133-5837

Restrictions
Freight

Category	Code	Description
Shelf-Life Code:	0	Nondeteriorative
Hazardous Material Indicator Code	N	There is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:	A	Non-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Controlled Inventory Item Code:	U	UNCLASSIFIED
Precious Metals Indicator Code:	A	Item 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 5310-01-133-5837

Navy

Category	Code	Description
Cognizance Codes	9B	Navy-owned stocks of DLA material Naval Inventory Control Point, Mechanicsburg
Source of Supply	SMS	Defense Logistics Agency Enterprise Business Systems
Agency	DN	Department of the Navy
Service Organization	N	U.S. Navy
Acquisition Advice Codes	Z	INSURANCE/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 Code	U	UNCLASSIFIED
Shelf Life Code	0	Nondeteriorative
Purchasing	QTY UOM	1 EA : Each