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Datasheet. 721-061-001 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.
0.750in. ⁓3/4"
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.
pan no. 2
The length of a straight line which passes through the center of a circular head,and terminates at the circumference.
0.357in. and 0.373in.
A measurement from the bottom to the top of the head,in distinction from depth.
0.122in. and 0.133in. ⁓9/64"
0.150in.
0.500in.
The style designation indicating the configuration that most nearly corresponds to the appearance of the internal drive.
cross recess type 1
The national stock number or the identification information of the end equipment for which the item is a part.
C-17A acft
The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.
0.190in. (UTS #10)
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
32
The number of externally relieved diameters on the body,adjacent to the head.
1
The name assigned to the item by the government agency or commercial organization controlling the design of the item.
screw
Those unusual or unique characteristics or qualities of an item not covered in the other requirements and which are determined to be essential for identification.
this is an altered item
The chemical compound or mechanical mixture properties of which the item is fabricated.
steel corrosion resisting
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.
oxide
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.
unf
Answers.
1EA
Unf
Steel corrosion resisting
32
Pan no. 2
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 5305-01-481-8359 SCREW,EXTERNALLY RELIEVED BODY
Used on c-17a acft. unf thread series oxide surface treated this is an altered item screw 32 thread quantity per inch pan no. 2 head style 0.250" thread length right-hand 2a thread class
- NIIN
- 014818359
- NIIN Date
- 01/26/01
- Schedule B
- 7318152000
- Name Code
- 01852
- FIIG
- A003B0
- QUP
- 1
- Historical Price
- $125.00 EA
- DEMIL / ITAR
- Uncontrolled item (Code A)
- Hazmat
- No hazard information available from HMIRS.
- MSDS
- N/A
- Precious Metals
- No precious metals
- 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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721-061-001 / Screw,externally relieved bodyWhat is the formal definition of this item?
An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes undercut for thread relief). it is no. 0 (0.060 in.) (1.5 mm) or larger, and is designed to be held or driven with either a wrench or inserted driver (excluding internal socket and multiple spline types) or both in sizes below no. 10 (0.190 in.) (5 mm) and larger sizes must have a head designed for any type inserted driver (excluding internal socket and 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. see also bolt, externally relieved body and bolt, internal wrenching.
