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Datasheet. 231F specification
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
2a
A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.
0.106in. ⁓7/64"
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. ⁓5/32"
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.
0.310in. and 0.315in.
A measurement from the bottom to the top of the head,in distinction from depth.
0.063in. and 0.068in. ⁓5/64"
Answers.
Fillister
0.106 inches
2a
FSC 5305 ⁓ Screws
NSN 5305-00-393-5043 SCREW,MACHINE
fillister head style 0.106" thread length 2a thread class
- NIIN
- 003935043
- NIIN Date
- 01/01/63
- Schedule B
- Name Code
- 06657
- FIIG
- A500D0
- DEMIL / ITAR
- Uncontrolled item (Code A)
- Hazmat
- No hazard information available from HMIRS.
- MSDS
- N/A
- Precious Metals
- --
- Enviromental
- N/A
- Electrostatic ESD & EMI
- No ESD or EMI sensitivity
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231F / 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.
