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Datasheet. 81/4-20UNC-3.5 GDR.5 SAEJR5 specification
Thread Class
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
3.5
Nominal Thread Diameter
The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.
The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.
0.250in. ⁓1/4"
Thread Quantity Per Inch
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
20
Thread Series Designator
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.
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.
What class is the thread series?
Unc
What is the thread quantity per inch?
20
What is the thread class?
3.5
What's the federal classification of 81/4-20UNC-3.5 GDR.5 SAEJR5?
FSC 5305 ⁓ Screws
NSN 5305-01-373-0985 SCREW,CAP,SOCKET HEAD
unc thread series 20 thread quantity per inch 3.5 thread class
- NIIN
- 013730985
- NIIN Date
- 03/27/93
- Schedule B
- Name Code
- 16282
- FIIG
- A003B0
- DEMIL / ITAR
- Uncontrolled item (Code A)
- Hazmat
- No hazard information available from HMIRS.
- MSDS
- N/A
- Precious Metals
- Metal content unknown
- Enviromental
- N/A
- Electrostatic ESD & EMI
- No ESD or EMI sensitivity
Other Part Numbers Parts with same form, fit, and function by other manufacturers
| 1. | FF-S-86 | Cage 81348 |
Major End Users Countries and entities
- - Brazil
- - France
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81/4-20UNC-3.5 GDR.5 SAEJR5 / Screw,cap,socket headWhat is the formal definition of this item?
An externally threaded fastener whose threaded portion is of one nominal diameter. the head has an internal socket or multiple spline for use with an inserted driver. a locking feature may be incorporated in the design of the head or threads. excludes items with bevel (conical) heads. see bolt, internal wrenching. excludes screw, shoulder; and screw, machine.
