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Datasheet. 1621250-2 specification
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
3a
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
24
The chemical compound or mechanical mixture properties of which the screw is fabricated.
aluminum alloy 2024
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the screw material.
QQ-A-225/6 fed spec single material response
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
24
3a
Schedule B number: 7616106000
Threaded fasteners of aluminum
FSC 5305 ⁓ Screws
NSN 5305-01-332-3517 SCREW,MACHINE
unc thread series 24 thread quantity per inch 3a thread class
- NIIN
- 013323517
- NIIN Date
- 01/10/91
- Schedule B
- 7616106000
- Name Code
- 06657
- FIIG
- A500D0
- 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
Major End Users Countries and entities
- - Canada
- - New Zealand
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1621250-2 / 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.
