387-831

387831 Self-locking Hexagon Nut
Home » Catalog » Nuts & Washers (p. 2190) » Self-locking Hexagon Nuts (p. 128) » Part Number 387-831

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Quality Commitment

Serving our customers with quality and safety first.

  •   AS9120 Certified
  •   Audited supply chain
  •   ITAR Registered
  •   DDTC Registered
  •   HAZMAT Certified
  •   Customer service objectives
  •   Every product 100% inspected
AS9120 Certified by SAI Global

Datasheet. 387-831 specification

Thread Class
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.

3b

Thread Direction
The direction of the thread when viewed axially. a right-hand thread winds in a clockwise direction while a left-hand thread winds in a counterclockwise direction.

RIGHT-Hand

Locking Feature
An element inserted into the fastener,or a design feature,that enables the fastener to effectively resist vibration and rotation.

prevailing torque with nonmetallic insert

Lubrication
A substance designed to provide a reduction of friction between the two surfaces in contact.

soluble lubricant

Nut Style
The style designation indicating the configuration that most nearly corresponds to the appearance of the nut.

hexagon

Nut Height

0.318in. and 0.469in. ⁓15/32"

Width Across Flats
The shortest straight line between flats,perpendicular to the height.

0.553in. and 0.564in. ⁓37/64"

Temp Rating
A value which expresses the degree of heat or cold as applied to the operation,or limitation of operation,of an item.

250.0 deg fahrenheit

Thread Series
A designation indicating the diameter-pitch combination and the number of threads per measurement scale applied to a series of diameters.

unjf

Thread Quantity Per Inch
The number of threads on the item per linear inch measured on a line parallel to the thread axis.

24

Nominal Thread Size
A designation that is used for the purpose of general identification of the thread.

0.375in. ⁓3/8"

Countersink Angle
The included angle of the countersink.

88.0 degrees nut

Bearing Surface Type
Indicates the type of bearing surface.

chamfered or washer faced

Bearing Surface Finish
Designates the specific roughness rating of the bearing surface,representing the arithmetic average deviation of the surface from the meanline in profile.

125.0 microinches

Material
The chemical compound or mechanical mixture properties of which the item is fabricated.

steel comp 1006 nut or steel comp 1008 nut or steel comp 1009 nut or steel comp 1010 nut or steel comp 1015 nut or steel comp 1018 nut or steel comp 1035 nut or steel comp 11L37 nut or steel comp 1213 nut or steel comp 12L14 nut

Surface Treatment
The metallic,nonmetallic,and/or chemical properties with which the item is plated,dipped,and/or coated.the treatment is designed to protect the surface(s) and cannot be wiped off.

cadmium except insert

Surface Treatment Document And Classification
The specification,standard,or manufacturers reference,and the classification designation,such as type,class,grade,and the like,that identifies the surface treatment material.

QQ-P-416, ty 2, cl 3 fed spec single treatment response except insert

Answers.

What quantity is this sold in?

1HD

What material is the self-locking hexagon nut made of ?

Steel comp 1006 nut or steel comp 1008 nut or steel comp 1009 nut or steel comp 1010 nut or steel comp 1015 nut or steel comp 1018 nut or steel comp 1035 nut or steel comp 11l37 nut or steel comp 1213 nut or steel comp 12l14 nut

What is the thread quantity per inch?

24

What is the thread direction?

Right-hand

What is the thread class?

3b

What is the NSN for 387-831?

5310-00-950-0039

How is this classified for shipping?

Schedule B number: 7318160000
nmfc 093486
Nuts of iron or steel

What's the federal classification of 387-831?

FSC 5310 ⁓ Nuts and washers

Note-nuts and washers, including specially designed, are to be classified in this fsc. a. nuts are a small metal block made in a variety of shapes such as square and hexagonal which is drilled and internally threaded. b. washers are a perforated piece of metal, leather, or other materials of various shapes or forms. they are used primarily as a seat for a bolt, nut, screw, rivet or nail to distribute pressure and prevent endwise motion over an area and/or to prevent movement between two parts by means of restraining features created by the shape of its edges.

Excluding bearing thrust washers (fsc 3120); shims (fsc 5365); ring spacers (fsc 5365); plate spacers (fsc 5365); lock rings (fsc 5365).

NSN 5310-00-950-0039 NUT,SELF-LOCKING,HEXAGON

cadmium except insert surface treated 24 thread quantity per inch right-hand 3b thread class

NIIN
009500039
NIIN Date
01/01/62
Schedule B
7318160000 
Name Code
05277
FIIG
A021A0
Item Weight
1.800lbs
Item Dimensions
--
QUP
1 
Historical Price
$52.85 HD
DEMIL / ITAR
Uncontrolled item (Code A)
Hazmat
No hazard information available from HMIRS.
MSDS
N/A
Precious Metals
No precious metals
Enviromental
N/A
Electrostatic ESD & EMI
No ESD or EMI sensitivity

Other Part Numbers Parts with same form, fit, and function by other manufacturers

1. 525-62890457 Cage D9182
2. MS20365-624 Cage D9182
3. MS20365-624A Cage D9182
4. NUT654 Cage 93232
5. 0.375UNF Cage K2158
6. A125J Cage K2158
7. F52NE-624 Cage 019L2
8. 64-17780CPIECE Cage 66935
9. 525-628-90457 Cage 99193
10. 2F8616 Cage D9182
11. 800996 Cage 19203
12. 938.07.17.607 Cage S4080
13. MS21044N6 Cage 80205
14. F52E064 Cage 72962
15. AN365-624 Cage 81352
16. AN365624 Cage 81352
17. MS21044N6 Cage 96906
18. 890625-624 Cage 83298
19. F52NE-624 Cage 72962
20. 870127-00 Cage 32345
21. 5310009500039 Cage SCY13
22. SP06199 Cage 8346B

Major End Users Countries and entities

  • - National Aeronautics And Space Administration 
  • - National Aeronautics And Space Administration 
  • - National Aeronautics And Space Administration 
  • - National Aeronautics And Space Administration 
  • - National Aeronautics And Space Administration 
  • - Department of The Navy 
  • - Department of The Army 
  • - Department of The Air Force 
  • - U.s. Marine Corps 
  • - U.s. Coast Guard 
  • - Defense Threat Reduction Agency 
  • - Austria 
  • - Lithuania 
  • - Poland 
  • - Slovakia 
  • - Brazil 
  • - Spain 
  • - Singapore 
  • - Kuwait 
  • - Morocco 
  • - Malaysia 
  • - Thailand 
  • - Australia 
  • - Belgium 
  • - Canada 
  • - New Zealand 
  • - France 
  • - Germany 
  • - Republic of Korea 
  • - United Kingdom 
  • - Philippines 
  • - Netherlands 
  • - Portugal 
  • - Italy 
  • - Denmark 
  • - Norway 
  • - Greece 
  • - Turkey 
  • - Nato Maintenance And Supply Agency 

Major End Items End use applications

  • - Direct air support central, an/uyq-3a (v) 2
  • - Support equipment, b-1 aircraft
  • - Elevators, aircraft
  • - L.p. compressors
  • - Fire pumps
  • - Stream (std. tensioned replenishment at sea method)
  • - Gun, 5-in./54 cal, mk-45
  • - Systems, 02n2
  • - Aircraft, sof ( ac-130h, mc-130h, ec-130e, hc-130)
  • - Ch 47 (rotary wing aircraft)
  • - Tank,storage,liquid argon-nitrogen-oxygen
  • - Generator set,diesel engine
  • - Switching set,commu
  • - Combat engineer vehicle,full tracked
  • - Combat engineer vehicle,full tracked
  • - Combat engineer vehicle,full tracked
  • - Engine with contain
  • - Distributor,water,tank type
  • - Installation kit,electronic equipment
  • - Combat engineer vehicle,full tracked
  • - Combat engineer vehicle,full tracked
  • - Combat engineer vehicle,full tracked
  • - Combat engineer vehicle,full tracked
  • - Combat engineer vehicle,full tracked
  • - Combat engineer vehicle,full tracked
  • - Blade,rotary wing
  • - Combat engineer vehicle,full tracked
  • - Combat engineer vehicle,full tracked
  • - Combat engineer vehicle,full tracked
  • - Combat engineer vehicle,full tracked
  • - Combat engineer vehicle,full tracked
  • - Truck,lift,aerial stores
  • - Seat,aircraft ejection
  • - Seat,aircraft ejection
  • - Generator,alternating current
  • - Carrier,air-antitank defense missile system
  • - Carrier,air-antitank defense missile system
  • - Carrier,air-antitank defense missile system
  • - Carrier,air-antitank defense missile system
  • - Landing gear,retractable
  • - Generator,smoke,mechanical
  • - Computor,missile.co
  • - Crane truck,warehouse
  • - Carrier,air-antitank defense missile system
  • - Tractor,full tracked,low speed
  • - Truck,aircraft cargo loading-unloading
  • - Circuit card assembly
  • - Stand,maintenance,guided missile components
  • - Computer,digital
  • - Voice terminal
  • - Servomechanism,hydraulic/pneumatic,aircraft
  • - Guidance and control section,guided missile
  • - Generator,direct current
  • - Plate,component mounting,aircraft gas turbine engine
  • - Test stand,electric and hydraulic system components
  • - Air conditioner
  • - Central,communicati
  • - Landing gear,retractable
  • - Tractor,full tracked,low speed
  • - Pylon,aircraft
  • - Engine and containe
  • - Guidance and control section,guided missile
  • - Generator set,diesel engine,trailer mounted
  • - Reeling mechanism
  • - Compressor unit,reciprocating
  • - Flap,wing landing
  • - Installation kit,electronic equipment
  • - Test station,fuel control system components
  • - Starter-generator,engine,aircraft
  • - Cradle,ground handling equipment
  • - Engine,diesel
  • - Telephone set
  • - Compressor unit,reciprocating
  • - Tank,storage,liquid argon-nitrogen-oxygen
  • - Collar,torque,landing gear
  • - Howitzer,medium,self-propelled
  • - Stabilizer,vertical
  • - Test stand,electric and hydraulic system components
  • - Howitzer,medium,self-propelled
  • - Howitzer,medium,self-propelled
  • - Carrier,ammunition,tracked
  • - Howitzer,medium,self-propelled
  • - Cylinder assembly,actuating,linear
  • - Compressor unit,reciprocating
  • - Generator,direct current
  • - Brake pressure and
  • - Howitzer,medium,self-propelled
  • - Howitzer,medium,self-propelled
  • - Landing gear,retractable
  • - Howitzer,medium,self-propelled
  • - Howitzer,medium,self-propelled
  • - Howitzer,medium,self-propelled
  • - Helicopter,cargo-transport
  • - Helicopter,cargo-transport
  • - Helicopter,cargo-transport
  • - Helicopter,cargo-transport
  • - Receiver-transmitter,radio
  • - Stand,cable rewind,
  • - Test set,flow rate indicating meter,field type
  • - Antenna-transceiver
  • - Heater,duct type,portable
  • - Rack,bomb,aircraft
  • - Mast
  • - Cylinder and piston assembly,landing gear
  • - Gearbox assembly,aircraft
  • - Landing gear,retractable
  • - Landing gear,retractable
  • - Counter,electronic,digital readout
  • - Conversion kit,bomb
  • - Air conditioner
  • - Compressor unit,reciprocating
  • - Installation kit,electronic equipment
  • - Generator,alternating current
  • - Shipping and storage container,engine
  • - Beam,aircraft
  • - Shield,dust
  • - Carrier,cargo
  • - Ladder,subassembly
  • - Terminal,communicat
  • - Maintenance platform,aircraft
  • - Test set,power supply
  • - Rack,bomb,aircraft
  • - Generator,alternating current
  • - Seat,aircraft
  • - Cannon,40 millimeter automatic gun
  • - Cannon,40 millimeter automatic gun
  • - Distributor,water,tank type
  • - Installation kit,electronic equipment
  • - Landing gear,retractable
  • - Demineralizer,water,ion exchange
  • - Rail assembly,cargo,aircraft
  • - Rail assembly,cargo,aircraft
  • - Rail assembly,cargo,aircraft
  • - Rail assembly,cargo,aircraft
  • - Rail assembly,cargo,aircraft
  • - Tank,storage,liquid argon-nitrogen-oxygen
  • - Tank,storage,liquid argon-nitrogen-oxygen
  • - Tank,storage,liquid argon-nitrogen-oxygen
  • - Generator set,diesel engine
  • - Generator set,diesel engine
  • - Truck,tank
  • - Indicator,subassemb
  • - Compressor unit,reciprocating
  • - Truss assembly,chas
  • - Semitrailer,guided missile body section
  • - Ring,handling,guided missile
  • - Environmental contr
  • - Central,communications
  • - Puller,electrical cable,guided missile
  • - Carrier,cargo
  • - Rocket motor
  • - Actuator-hydraulic-
  • - Converter,signal data
  • - Computer,target int
  • - Power supply subassembly
  • - Air conditioner
  • - Searchlight
  • - Cradle,guided missile section
  • - Motor,control
  • - Truck tractor
  • - Truck,aircraft cargo loading-unloading
  • - Generator,direct current
  • - Truck,lift,aerial stores
  • - Pylon,aircraft
  • - Terminal,data processing
  • - Air conditioner
  • - Trailer,ground handling
  • - Recorder-reproducer,guided missile system
  • - Tank,storage,liquid argon-nitrogen-oxygen
  • - Pylon,aircraft
  • - Computer,target intercept
  • - Tie down,aircraft mooring
  • - Heater,duct type,portable
  • - Rocket motor
  • - Restraint assembly,
  • - Restraint assembly,
  • - Kit,protective cove
  • - Key distribution ce
  • - Release latch assy
  • - Truck,tank
  • - Line termination unit
  • - Truck,fire fighting
  • - Recovery vehicle,full tracked
  • - Carrier,personnel,full tracked
  • - Recovery vehicle,full tracked
  • - Landing gear,retractable
  • - Speech equipment
  • - Line termination unit
  • - Recovery vehicle,full tracked
  • - Starter-generator,engine,nonaircraft
  • - Reeling machine,cable,motor driven
  • - Drive,antenna
  • - Carrier,ammunition,tracked
  • - Rack,bomb ejector,aircraft
  • - Recovery vehicle,full tracked
  • - Stabilizer,vertical
  • - Recovery vehicle,full tracked
  • - Indicator assy,targ
  • - Trailer,rail type
  • - Trailer,rail type
  • - Recovery vehicle,full tracked
  • - Carrier,ammunition,tracked
  • - Recovery vehicle,full tracked
  • - Recovery vehicle,full tracked
  • - Bottle cleaning-cha
  • - Trailer,rotor head
  • - Distribution box
  • - Rack,bomb,aircraft
  • - Truck,aircraft cargo loading-unloading
  • - Carrier,ammunition,tracked
  • - Carrier,cargo
  • - Truck,fire fighting
  • - Air conditioner
  • - Truck,tank
  • - Head,rotary wing
  • - Truck,lift,fork
  • - Tank,storage,liquid argon-nitrogen-oxygen
  • - Recovery vehicle,full tracked

Availability for 387-831 A member of our team will provide you with a price and availability quote

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Shipping Information

Special Handling
Other or no special handling required (sh) 
LTL (less than a truck load rating)
Rating variable 
LCL (less than a car load rating)
Unknown
Special Cargo
No special type of cargo code applicable 
Air Freight (Minimum cargo door size required)
Shipment is not a consolidation and does not exceed 84 inches in any dimension. 
Customs Requirement Classification
Construction materials: includes paint and related materials, prefabricated building, wood products, metal and composition mater 
Commodity (for shipments via water)
Bolts or nuts (iron or steel),(less than 35 feet) 
NMFC (national motor freight code)
093486 BOLTS,NUTS OR SCREWS, NOI (SUB 3) 
UFC (universal freight code)
48950 

Similar by Design Other nuts with similar characteristics

Nothing similar to this part number was found in our inventory

387-831 / Nut,self-locking,hexagonWhat is the formal definition of this item?

A nut having a flat bottom and 6 sides. an integral feature is incorporated for locking on the threads of a mating member. excludes nut (1), self-locking, cap.