55985

55985 Flat Washer

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Datasheet. 55985 specification

Cross-sectional Shape Style
The style designation indicating the configuration that most nearly corresponds to the cross-sectional shape of the item.

rectangular

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

0.142in. and 0.148in. ⁓5/32"

Peripheral Shape Style
The style designation indicating the configuration that most nearly corresponds to the peripheral shape of the item.

round

Center Hole Shape Style
The style designation indicating the configuration that most nearly corresponds to the shape of the center hole.

1 round

Thickness
A measurement of the smallest dimension of an item,in distinction from length or width.

0.031in. ⁓1/32"

Overall Diameter
A measurement of the longest straight line across a circular cross-sectional plane.

0.344in. ⁓11/32"

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.

zinc

Answers.

What material is the flat washer made of ?

Copper alloy

What is the inside hole diameter?

0.142 inches minimum and 0.148 inches maximum

What is the NSN for 55985?

5310-00-270-2172

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 55985?

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 5310-00-270-2172 WASHER,FLAT

zinc surface treated 0.142" hole diameter

NIIN
002702172
NIIN Date
01/01/63
Schedule B
7415210000 
Name Code
13393
FIIG
A022B0
Item Weight
0.000lbs
Item Dimensions
--
QUP
 
Historical Price
$0.13 EA
DEMIL / ITAR
Uncontrolled item (Code A)
Hazmat
No hazard information available from HMIRS.
MSDS
N/A
Precious Metals
Metal content unknown
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. 4424 Cage 0ATF2
2. D2458 Cage 82796
3. 4424 Cage 54108
4. WPP2633 Cage 79172

Major End Users Countries and entities

  • - Department of The Army 
  • - Department of The Navy 
  • - U.s. Marine Corps 
  • - Department of The Air Force 
  • - Australia 
  • - Republic of Korea 
  • - 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

55985 / Washer,flatWhat is the formal definition of this item?

A washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. the hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch (0.8 micrometer). the thickness cannot exceed 25 percent of the largest outside dimension. when the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) or greater. the maximum tolerance is applied to dimensions and used as a determining factor. items with separable lamination use shim. for items fabricated from ceramic or electrically rated materials by specification or industry standards use insulator (1), washer. excludes disk, valve, graphite impregnated and lubricated items.