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Datasheet. 661640 specification
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
3b
The direction of the thread when viewed axially. a right-hand thread winds in a clockwise direction while a left-hand thread winds in a counterclockwise direction.
RIGHT-Hand
An element inserted into the fastener,or a design feature,that enables the fastener to effectively resist vibration and rotation.
prevailing torque all metal design
The style designation indicating the configuration that most nearly corresponds to the appearance of the nut.
internal or external wrenching hexagon
0.188in. ⁓13/64"
The shortest straight line between flats,perpendicular to the height.
0.365in. and 0.377in. ⁓25/64"
A designation indicating the diameter-pitch combination and the number of threads per measurement scale applied to a series of diameters.
unjf
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
32
A numeric value that reflects the hardness of an item when used in conjunction with a hardness rating scale.
38.0 rockwell c and 48.0 rockwell c
A designation that is used for the purpose of general identification of the thread.
0.190in. ⁓13/64"
Indicates the type of bearing surface.
chamfered
The chemical compound or mechanical mixture properties of which the item is fabricated.
iron alloy 660
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.
ams 5525 assn std single material response
An indication of the precious material and its location in the item.
external surfaces silver
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
The specification,standard,or manufacturers reference,and the classification designation,such as type,class,grade,and the like,that identifies the surface treatment material.
ams 2411 assn std single treatment response
Answers.
Iron alloy 660
32
Right-hand
3b
Schedule B number: 7318160000
nmfc 093460
Nuts of iron or steel
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 5310-00-168-2978 NUT,SELF-LOCKING,HEXAGON
silver surface treated 32 thread quantity per inch right-hand 3b thread class
- NIIN
- 001682978
- NIIN Date
- 09/14/70
- Schedule B
- 7318160000
- Name Code
- 05277
- FIIG
- A021A0
- Item Weight
- 0.100lbs
- Item Dimensions
- --
- QUP
- Historical Price
- $5.63 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. | 540625 | Cage 77445 |
| 2. | 661641 | Cage 77445 |
| 3. | 661642 | Cage 77445 |
| 4. | H49044-3 | Cage 15653 |
| 5. | 661639 | Cage 77445 |
| 6. | H49044-3 | Cage R1120 |
| 7. | H31-3 | Cage 15653 |
Major End Users Countries and entities
- - Department of The Navy
- - Department of The Air Force
- - Poland
- - Spain
- - Malaysia
- - Australia
- - Germany
- - Republic of Korea
- - United Kingdom
- - Italy
- - Turkey
Availability for 661640 A member of our team will provide you with a price and availability quote
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- Special Handling
- Other or no special handling required (sh)
- LTL (less than a truck load rating)
- 70.0
- 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)
- 093460 BOLTS/NUTS NOI BBC/ZINC
- UFC (universal freight code)
- 48930
Similar by Design Other nuts with similar characteristics
Nothing similar to this part number was found in our inventory
661640 / Nut,self-locking,hexagonWhat is the formal definition of this item?
A nut having a flat bottom and 6 sides. an integral feature is incorporated for locking on the threads of a mating member. excludes nut (1), self-locking, cap.
