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Datasheet. 4F81B1 specification
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
2b
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
The length of a straight line which passes through the center of a counterbored portion of a hole,and terminates at the circumference.
0.375in. nut
The style designation indicating the configuration that most nearly corresponds to the appearance of the nut.
knurled
0.625in.
A measurement between the opposite flat surfaces of the nut,in distinction from length or width.
0.375in.
0.156in.
The measurement of the enlarged portion adjacent to the threaded portion of a nut,in distinction from height.
0.016in. nut
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 designation that is used for the purpose of general identification of the thread.
0.250in. ⁓1/4"
The included angle of the countersink.
45.0 degrees nut
The name assigned to the item by the government agency or commercial organization controlling the design of the item.
navy special project
The chemical compound or mechanical mixture properties of which the item is fabricated.
copper alloy
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.
QQ-B-626 fed spec single material response
Answers.
1EA
Copper alloy
20
Right-hand
2b
Schedule B number: 7415290000
nmfc 093460
Copper screws, nuts, bolts, rivets, and other fasteners 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 5310-00-796-4786 NUT,PLAIN,KNURLED
navy special project 20 thread quantity per inch right-hand 2b thread class
- NIIN
- 007964786
- NIIN Date
- 08/28/68
- Schedule B
- 7415290000
- Name Code
- 15886
- FIIG
- A021A0
- Item Weight
- 0.000lbs
- Item Dimensions
- QUP
- 1
- Historical Price
- $1.43 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. | 64A98B780-1 | Cage 0ZLV2 |
| 2. | 64A98B780-1 | Cage 98296 |
Major End Users Countries and entities
- - Department of The Navy
Availability for 4F81B1 A member of our team will provide you with a price and availability quote
Request a Quote »Shipping Information
- 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
4F81B1 / Nut,plain,knurledWhat is the formal definition of this item?
A nut, round in shape, having all or part of its outer surface knurled. it may have provisions for external wrenching. for items having a thickness (or height) exceeding two times the outside diameter, use post, electrical-mechanical equipment. see also nut (1), plain, round. (when height or thickness, and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance).
