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Datasheet. 2247-177 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.
0.157in. and 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.
0.219in. and 0.250in. ⁓1/4"
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.
binding
The length of a straight line which passes through the center of a circular head,and terminates at the circumference.
0.275in. and 0.290in.
A measurement from the bottom to the top of the head,in distinction from depth.
0.071in. and 0.087in. ⁓3/32"
The style designation indicating the configuration that most nearly corresponds to the appearance of the internal drive.
slot
The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.
0.138in. (UTS #6)
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
32
The chemical compound or mechanical mixture properties of which the screw is fabricated.
copper alloy
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.
nickel
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
Answers.
Unc
Nickel
32
Binding
0.157 inches minimum and 0.250 inches maximum
Right-hand
2a
Schedule B number: 7415338550
Other copper screws (not for wood) bolts and nuts
FSC 5305 ⁓ Screws
NSN 5305-00-099-7909 SCREW,MACHINE
unc thread series nickel screw surface treated 32 thread quantity per inch binding head style 0.157" thread length right-hand 2a thread class
- NIIN
- 000997909
- NIIN Date
- 12/13/72
- Schedule B
- 7415338550
- Name Code
- 06657
- FIIG
- A500D0
- Item Weight
- 0.000lbs
- Item Dimensions
- --
- 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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2247-177 / 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.
