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Datasheet. 4-40UNC2A1/4LGANSIB18.6.3 FILHD specification
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
2a
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.
0.250in. ⁓1/4"
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.
0.250in. ⁓1/4"
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.
fillister
The length of a straight line which passes through the center of a circular head,and terminates at the circumference.
0.166in. and 0.183in.
A measurement from the bottom to the top of the head,in distinction from depth.
0.094in. and 0.107in. ⁓7/64"
The style designation indicating the configuration that most nearly corresponds to the appearance of the internal drive.
cross recess type ii
The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.
0.112in. (UTS #4)
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
40
The chemical compound or mechanical mixture properties of which the screw is fabricated.
steel comp 301 or steel comp 430
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the screw material.
IFI-104 assn std all material responses
The metallic,nonmetallic,and/or chemical properties with which the screw is plated,dipped and/or coated.the treatment is designed to protect the surface(s) and cannot be wiped off.
passivate
Characteristics or qualities of an item,not covered in any other requirement,which are considered essential information for one or more functions excluding nsn assignment.
ARING-King pt list 006-8024-05
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.
unc
The document designator of the specification or standard which established the item of supply.
22373-089-6163 manufacturers specification control and 80204-ansi B18.6.3 professional/industrial association standard
The number,letter,or symbol that indicates the type,style,grade,class,and the like,of an item in a nonidentifying specification or standard.
4.40 size and 1/4in. length and stls/stl material
The technical differentiating characteristic/s/ of an item of supply which depart/s/ from the text of a specification or a standard in that it represents a selection of characteristics stated in the specification or standard as being optional,or a variation from one or more of the stated characteristics,or an additional characteristic not stated in the specification or standard.
as modified by material
Answers.
Unc
Passivate
40
Fillister
0.250 inches
Right-hand
2a
Schedule B number: 7318152000
Bolts and bolts and their nuts or washers exported in the same shipment
FSC 5305 ⁓ Screws
NSN 5305-01-227-3990 SCREW,MACHINE
unc thread series passivate screw surface treated 40 thread quantity per inch fillister head style 0.250" thread length right-hand 2a thread class
- NIIN
- 012273990
- NIIN Date
- 03/03/86
- Schedule B
- 7318152000
- Name Code
- 06657
- FIIG
- A500D0
- 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. | 089K-6163-04 | Cage K0668 |
| 2. | 089-6163-04 | Cage 22373 |
| 3. | 089K-6163-04 | Cage K0668 |
| 4. | 089-6163-04 | Cage 22373 |
Major End Users Countries and entities
- - Australia
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4-40UNC2A1/4LGANSIB18.6.3 FILHD / Screw,machineWhat is the formal definition of this item?
An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). no. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. a locking feature may be incorporated in the design of the head or threads. excludes bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. see also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.
