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Datasheet. 688-1864 APPX 2 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 with nonmetallic insert
The style designation indicating the configuration that most nearly corresponds to the appearance of the nut.
hexagon
0.240in. and 0.360in. ⁓3/8"
The shortest straight line between flats,perpendicular to the height.
0.430in. and 0.439in. ⁓29/64"
A value which expresses the degree of heat or cold as applied to the operation,or limitation of operation,of an item.
250.0 deg fahrenheit
A designation indicating the diameter-pitch combination and the number of threads per measurement scale applied to a series of diameters.
unc
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
20
A numeric value that reflects the hardness of an item when used in conjunction with a hardness rating scale.
26.0 rockwell c and 34.0 rockwell c
A designation that is used for the purpose of general identification of the thread.
0.250in. ⁓1/4"
The master requirement codes of those requirements which are technically critical by reason of tolerance,fit,performance,or other characteristics which affect identification of the item.
zzzy
Indicates the type of bearing surface.
any acceptable
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.
for additional description and information concerning this item, refer to spccinst 4440.376 series, chapter 9
The chemical compound or mechanical mixture properties of which the item is fabricated.
steel comp 1137 except insert
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.
fed STD-66 fed std single material response except insert
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.
cadmium except insert
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-416, type 2, class 3 fed spec single treatment response except insert
A feature of the item of supply which must be specifically recorded when the reference number covers a range of items.
material will be in accordance with ships parts control center activity hx quality control, manufacturing and testing specifications
Answers.
1EA
Steel comp 1137 except insert
20
Right-hand
3b
Schedule B number: 7318160000
nmfc 093470
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 5310-01-212-9719 NUT,SELF-LOCKING,HEXAGON
cadmium except insert surface treated for additional description 20 thread quantity per inch right-hand 3b thread class
- NIIN
- 012129719
- NIIN Date
- 07/20/85
- Schedule B
- 7318160000
- Name Code
- 05277
- FIIG
- A021A0
- Item Weight
- 2.600lbs
- Item Dimensions
- 35 X 30 X 9
- QUP
- 1
- Historical Price
- $327.50 EA
- DEMIL / ITAR
- USML/ITAR controlled item (Code: F)
- 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. | 000.250-20UNC-3B, LEVEL 1 | Cage 03950 |
| 2. | 000.250-20UNC-3B, LEVEL 1 | Cage 03950 |
| 3. | 000.250-20UNC-3B, LEVEL 1 | Cage 03950 |
Major End Users Countries and entities
- - Department of The Navy
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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)
- 70.0
- 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)
- Bolts or nuts (iron or steel),(less than 35 feet)
- NMFC (national motor freight code)
- 093470 BOLTS/NUTS I/S
- UFC (universal freight code)
- 48940
Similar by Design Other nuts with similar characteristics
Nothing similar to this part number was found in our inventory
688-1864 APPX 2 / 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.
