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Datasheet. BACS12ER4K7 specification
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
3a
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.
oval countersunk
The length of a straight line which passes through the center of a circular head,and terminates at the circumference.
0.447in.
0.2425in.
A measurement from the bottom to the top of the head,in distinction from depth.
0.106in. ⁓7/64"
The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.
0.2500in. ⁓1/4"
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
28
The maximum rated load in tension applied in a longitudinal direction,per unit of cross-sectional area,that the material can withstand without rupture.
4950 pounds per square inch
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.
unjf
Answers.
Unjf
28
Oval countersunk
3a
FSC 5305 ⁓ Screws
NSN 5305-01-631-5278 SCREW,MACHINE
unjf thread series 28 thread quantity per inch oval countersunk head style 3a thread class
- NIIN
- 016315278
- NIIN Date
- 09/17/14
- Schedule B
- Name Code
- 06657
- FIIG
- A500D0
- DEMIL / ITAR
- Uncontrolled item (Code )
- Hazmat
- No hazard information available from HMIRS.
- MSDS
- N/A
- Precious Metals
- --
- Enviromental
- N/A
- Electrostatic ESD & EMI
- No ESD or EMI sensitivity
Major End Users Countries and entities
- - Australia
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BACS12ER4K7 / 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.
