MS51860-55

MS5186055 Tube Fitting Locknut
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Datasheet. MS51860-55 specification

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

2b

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

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

tube fitting locknut

Nut Height

0.270in. ⁓9/32"

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

0.812in. ⁓13/16"

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

unf

Packing Recess Diameter
The length of a straight line which passes through the center of the packing recess,and terminates at the circumference.

any acceptable

Packing Recess Depth
A measurement between specified points on the packing recess,in distinction from height.

any acceptable

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

18

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

0.562in. ⁓9/16"

Nominal Tube Outside Diameter
The nominal length of a straight line which passes through the center of a tube,and terminates at the outside circumference.

0.375in.

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

steel

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

Answers.

What quantity is this sold in?

1EA

What material is the tube fitting locknut made of ?

Steel

What is the thread quantity per inch?

18

What is the thread direction?

Right-hand

What is the thread class?

2b

What is the NSN for MS51860-55?

4730-00-375-6403

What's the federal classification of MS51860-55?

FSC 4730 ⁓ Hose, pipe, tube, lubrication, and railing fittings

Excluding air conditioning-heating fittings (fsc 4520); bituminized fiber and concrete fittings (fsc 5630); conduit boxes and fittings (fsc 5975); downspout fittings (fsc 5670); medical and surgical fittings (fsc 6515); laboratory fittings (fsc 6640); post caps and rail ends (fsc 5660); machine thread bushings and plugs (fsc 5365).

NSN 4730-00-375-6403 LOCKNUT,TUBE FITTING

cadmium surface treated 18 thread quantity per inch right-hand 2b thread class

NIIN
003756403
NIIN Date
03/16/74
Schedule B
 
Name Code
17645
FIIG
A021A0
Item Weight
0.100lbs
Item Dimensions
--
QUP
1 
Historical Price
$0.78 EA
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. 6 080118C Cage 81343
2. 36668 Cage 81616
3. 6 070118C Cage 81343
4. 4730003756403 Cage SCY13
5. 10386315 Cage A486G

Major End Users Countries and entities

  • - Department of The Army 
  • - Department of The Navy 
  • - Department of The Air Force 
  • - U.s. Marine Corps 
  • - Austria 
  • - Finland 
  • - Lithuania 
  • - Brazil 
  • - Spain 
  • - Israel 
  • - Singapore 
  • - Morocco 
  • - Australia 
  • - Belgium 
  • - France 
  • - Germany 
  • - Republic of Korea 
  • - Netherlands 
  • - United Kingdom 
  • - Portugal 
  • - Italy 
  • - Denmark 
  • - Greece 
  • - Turkey 
  • - Nato Maintenance And Supply Agency 

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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 locknuts with similar characteristics

Nothing similar to this part number was found in our inventory

MS51860-55 / Locknut,tube fittingWhat is the formal definition of this item?

An item with internal machine threads designed to fit the external machine threads of a tube fitting. it has flat faces, one of which has a counterbored recess to accommodate packing, packing or sealing ring(s), gasket(s), and the like. the item, when installed, provides a method of locking and sealing the connection. see also locknut, pipe; nut (1), tube coupling and nut (1), plain, hexagon.