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Datasheet. 99-4581 specification
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
3a
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
A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.
0.069in. and 0.148in. ⁓5/32"
The dimension,measured along a line parallel to the longitudinal axis,from the largest bearing surface of the fastener head to the extreme opposite end,or as specifically designated for other type fasteners.
0.156in. and 0.188in. ⁓13/64"
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.
flat countersunk
The length of a straight line which passes through the center of a circular head,and terminates at the circumference.
0.156in. and 0.172in.
The style designation indicating the configuration that most nearly corresponds to the appearance of the internal drive.
cross recess type 1
The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.
0.086in. (UTS #2)
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
56
The included angle of the countersink.
81.0 degrees
The chemical compound or mechanical mixture properties of which the item is fabricated.
steel comp 302 or steel comp 303
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.
MIL-S-7720 mil spec 1st material response or QQ-S-764 fed spec 2nd 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.
passivate
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.
unjc
Answers.
1EA
Unjc
Steel comp 302 or steel comp 303
56
Flat countersunk
0.069 inches minimum and 0.148 inches maximum
Right-hand
3a
Schedule B number: 7318152000
nmfc 096630
Bolts and bolts and their nuts or washers exported in the same shipment
FSC 5305 ⁓ Screws
NSN 5305-00-143-1697 SCREW,CAP,SOCKET HEAD
unjc thread series passivate surface treated 56 thread quantity per inch flat countersunk head style 0.069" thread length right-hand 3a thread class
- NIIN
- 001431697
- NIIN Date
- 08/16/68
- Schedule B
- 7318152000
- Name Code
- 16282
- FIIG
- A003B0
- QUP
- 1
- Historical Price
- $10.05 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
Major End Users Countries and entities
- - Department of The Air Force
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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
- Supplies and equipment for aircraft and aerial targets, including aircraft and maintenance parts, aircraft accessories, aircraft
- Commodity (for shipments via water)
- Metal hardware
- NMFC (national motor freight code)
- 096630 SCREWS NOI BRASS/BRONZE/COPPER
- UFC (universal freight code)
- 50590
Similar by Design Other screws with similar characteristics
Nothing similar to this part number was found in our inventory
99-4581 / Screw,cap,socket headWhat is the formal definition of this item?
An externally threaded fastener whose threaded portion is of one nominal diameter. the head has an internal socket or multiple spline for use with an inserted driver. a locking feature may be incorporated in the design of the head or threads. excludes items with bevel (conical) heads. see bolt, internal wrenching. excludes screw, shoulder; and screw, machine.
