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Datasheet. 0441C0121-57 specification
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
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.
1.000in. ⁓1/64"
The length of a straight line which passes through the center of a circular head,and terminates at the circumference.
0.750in.
A measurement from the bottom to the top of the head,in distinction from depth.
0.250in. ⁓1/4"
The national stock number or the identification information of the end equipment for which the item is a part.
underwater combat system, h and SQOK410Visor unicorp
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"
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
20
The chemical compound or mechanical mixture properties of which the item is fabricated.
steel comp 303
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 comp 303
20
Right-hand
Schedule B number: 7318152000
Bolts and bolts and their nuts or washers exported in the same shipment
FSC 5305 ⁓ Screws
NSN 5305-01-379-2336 SCREW,EXTERNALLY RELIEVED BODY
Used on underwater combat system, h and sqok410visor unicorp. unc thread series 20 thread quantity per inch right-hand
- NIIN
- 013792336
- NIIN Date
- 08/29/93
- Schedule B
- 7318152000
- Name Code
- 01852
- FIIG
- A003B0
- 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
| 1. | 4157 | Cage 04729 |
Major End Users Countries and entities
- - Canada
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0441C0121-57 / 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.
