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Datasheet. ST4M178A4 specification
The length of a straight line which passes through the center of a hole,and terminates at the circumference.
2.400in. ⁓2-13/32"
The length of a straight line which passes through the center of a circular figure or body,and terminates at the outside circumference.
2.860in.
The distance measured in a straight line from the bottom to the top of an item.
0.307in.
A measurement of the smallest dimension of the material,in distinction from length or width.
0.025in.
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.
one tab, 0.200 in. w, on each side of center hole
The chemical compound or mechanical mixture properties of which the item is fabricated.
copper alloy 172
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.
QQ-C-533, temper at fed spec single material response
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.
tin
The specification,standard,or manufacturers reference,and the classification designation,such as type,class,grade,and the like,that identifies the surface treatment material.
MIL-T-10727 mil spec single treatment response
The style designation indicating the configuration that most nearly corresponds to the appearance of the item.
spring tension
Answers.
Spring tension
Copper alloy 172
0.025 inches
2.860 inches
2.400 inches
Schedule B number: 7415210000
nmfc 194120
Copper washers including spring washers not threaded
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 5310-01-030-4920 WASHER,SPRING TENSION
spring tension tin surface treated one tab, 0.200 in. w, on each side of center hole 0.025" material thickness 2.860" outside diameter 2.400" hole diameter
- NIIN
- 010304920
- NIIN Date
- 11/07/76
- Schedule B
- 7415210000
- Name Code
- 15938
- FIIG
- A022B0
- Item Weight
- 0.100lbs
- Item Dimensions
- --
- QUP
- Historical Price
- $47.73 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. | ST4M178 REV D | Cage 76301 |
Major End Users Countries and entities
- - Department of The Air Force
- - Department of The Navy
- - Republic of Korea
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- 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
ST4M178A4 / 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.
