21181-C

21181C Recessed Washer

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Datasheet. 21181-C specification

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

0.281in. ⁓9/32"

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.

0.750in.

Overall Height
The distance measured in a straight line from the bottom to the top of an item.

0.250in.

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

0.406in.

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

0.094in.

Color
A characteristic of light that can be specified in terms of luminance,dominant wavelength,and purity.

yellow

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

copper alloy

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

recessed

Answers.

What is the style?

Recessed

What material is the recessed washer made of ?

Copper alloy

What is the outside diameter?

0.750 inches

What is the inside hole diameter?

0.281 inches

What is the NSN for 21181-C?

5310-01-143-4201

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 21181-C?

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 5310-01-143-4201 WASHER,RECESSED

recessed 0.750" outside diameter 0.281" hole diameter

NIIN
011434201
NIIN Date
12/03/82
Schedule B
7415210000 
Name Code
15933
FIIG
A022B0
Item Weight
0.100lbs
Item Dimensions
--
QUP
 
Historical Price
$42.15 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. 21181 Cage D9182
2. 21181C Cage 96046
3. 21181 Cage 96046

Major End Users Countries and entities

  • - Department of The Navy 
  • - U.s. Marine Corps 
  • - Department of The Air Force 

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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

21181-C / Washer,recessedWhat is the formal definition of this item?

A washer of any peripheral shape having a centrally located hole. both bearing surfaces are parallel and flat, but one or both of the bearing surfaces must be broken by a counterbore, countersink, or similarly shaped recess. the thickness must not exceed 25 per cent of the outside diameter or the largest outside dimension. the maximum limit of the tolerance or range applied to the thickness and/or largest outside dimension must be used to determine compliance. excludes washer, concave, retainer, packing, and thrust type washers. see also spacer, sleeve; and spacer, stepped.