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Datasheet. S235A163-28 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.
0.250in. ⁓1/4"
The length of a straight line which passes through the center of a circular head,and terminates at the circumference.
0.256in. and 0.270in.
A measurement from the bottom to the top of the head,in distinction from depth.
0.087in. and 0.097in. ⁓7/64"
0.090in.
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 number of externally relieved diameters on the body,adjacent to the head.
1
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.
unc
Answers.
Unc
Steel corrosion resisting
32
0.250 inches
2a
Schedule B number: 7318152000
Bolts and bolts and their nuts or washers exported in the same shipment
FSC 5305 ⁓ Screws
NSN 5305-01-411-9077 SCREW,EXTERNALLY RELIEVED BODY
unc thread series oxide surface treated 32 thread quantity per inch 0.250" thread length 2a thread class
- NIIN
- 014119077
- NIIN Date
- 04/05/95
- Schedule B
- 7318152000
- Name Code
- 01852
- FIIG
- A003B0
- QUP
- Historical Price
- $13.50 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
Other Part Numbers Parts with same form, fit, and function by other manufacturers
Major End Users Countries and entities
- - Department of The Air Force
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S235A163-28 / 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.
