21C804-001

21C804001 Lock Washer

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Datasheet. 21C804-001 specification

Hole Diameter
The length of a straight line which passes through the center of a hole,and terminates at the circumference.

0.229in. and 0.249in. ⁓1/4"

Outside Diameter
The length of a straight line which passes through the center of a circular figure or body,and terminates at the outside circumference.

0.372in. and 0.380in.

Material Thickness
A measurement of the smallest dimension of the material,in distinction from length or width.

0.034in. and 0.044in.

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

copper alloy

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.

silver

Style Designator
The style designation indicating the configuration that most nearly corresponds to the appearance of the item.

flat internal teeth

Answers.

What quantity is this sold in?

1EA

What is the style?

Flat internal teeth

What material is the lock washer made of ?

Copper alloy

What is the thickness?

0.034 inches minimum and 0.044 inches maximum

What is the outside diameter?

0.372 inches minimum and 0.380 inches maximum

What is the inside hole diameter?

0.229 inches minimum and 0.249 inches maximum

What is the NSN for 21C804-001?

5310-00-820-7956

How is this classified for shipping?

Schedule B number: 7415210000
nmfc 194120
Copper washers including spring washers not threaded

What's the federal classification of 21C804-001?

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 5310-00-820-7956 WASHER,LOCK

flat internal teeth silver surface treated 0.034" material thickness 0.372" outside diameter 0.229" hole diameter

NIIN
008207956
NIIN Date
01/01/60
Schedule B
7415210000 
Name Code
14218
FIIG
A022B0
Item Weight
1.700lbs
Item Dimensions
--
QUP
Historical Price
$0.23 EA
DEMIL / ITAR
Uncontrolled item (Code A)
Hazmat
No hazard information available from HMIRS.
MSDS
N/A
Precious Metals
Contains silver
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. 1150-800-3 Cage 72314
2. 60-033377-01 Cage 15280
3. M5856 Cage 01121
4. M6351 Cage 01121

Major End Users Countries and entities

  • - Department of The Army 
  • - Department of The Navy 
  • - Department of The Air Force 
  • - Canada 
  • - Germany 
  • - Republic of Korea 
  • - Italy 
  • - Greece 
  • - Turkey 

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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)
Metal hardware 
NMFC (national motor freight code)
194120 WASHERS/GASKETS/PCKG DVCS NOI 
UFC (universal freight code)
95100 

Similar by Design Other washers with similar characteristics

Nothing similar to this part number was found in our inventory

21C804-001 / Washer,lockWhat is the formal definition of this item?

A washer which is usually round with a centrally located hole. its edges and two bearing surfaces are so designed that applied pressure brings into play the spring tension and/or frictional locking principle which materially resists any tendency toward turning. it may be made of one or two pieces