A448-3-1

A44831 Spring Tension Washer

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Quality Commitment

Serving our customers with quality and safety first.

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AS9120 Certified by SAI Global

Datasheet. A448-3-1 specification

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

0.122in. and 0.126in. ⁓9/64"

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.

0.270in. and 0.300in.

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

0.021in.

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

63.0 microinches all surfaces

Special Features
Those unusual or unique characteristics or qualities of an item not covered in the other requirements and which are determined to be essential for identification.

recess angle 105 deg min, 115 deg max

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

steel comp 302 or steel comp 304

Material Document And Classification
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.

QQ-S-766, cond a fed spec all material responses

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.

passivate

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-35 fed spec single treatment response

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

spring tension

Answers.

When was the most recent contract awarded?

On 05/04/2009 under contract SPM5AZ07D49030711 for qty 4,255

What is the style?

Spring tension

What material is the spring tension washer made of ?

Steel comp 302 or steel comp 304

What is the thickness?

0.021 inches

What is the outside diameter?

0.270 inches minimum and 0.300 inches maximum

What is the inside hole diameter?

0.122 inches minimum and 0.126 inches maximum

What is the NSN for A448-3-1?

5310-00-352-0477

How is this classified for shipping?

Schedule B number: 7318210000
nmfc 194120
Spring washers and other lock washers, iron or steel

What's the federal classification of A448-3-1?

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 5310-00-352-0477 WASHER,SPRING TENSION

spring tension passivate surface treated recess angle 105 deg min, 115 deg max 0.021" material thickness 0.270" outside diameter 0.122" hole diameter

NIIN
003520477
NIIN Date
02/02/74
Schedule B
7318210000 
Name Code
15938
FIIG
A022B0
Item Weight
0.100lbs
Item Dimensions
--
QUP
 
Historical Price
$1.35 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. 396973 Cage 89305
2. ST4M159-06 Cage 58009
3. ST4M159-06 Cage 76301
4. 10121315 Cage A486G

Major End Users Countries and entities

  • - Department of The Navy 
  • - Department of The Air Force 
  • - Finland 
  • - Poland 
  • - Spain 
  • - Singapore 
  • - Malaysia 
  • - Australia 
  • - Belgium 
  • - Canada 
  • - New Zealand 
  • - France 
  • - Republic of Korea 
  • - Netherlands 
  • - Denmark 
  • - Norway 
  • - 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

A448-3-1 / Washer,spring tensionWhat is the formal definition of this item?

A bent spring metal washer with a centrally located hole. it is designed to exert pressure axially when assembled in place.