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Externally Relieved Body Screw NSN 5305-00-550-4938

Item Description

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.

NSN 5305-00-550-4938 NSN: 5305-00-550-4938

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Features and Characteristics

Thread Class
2a
Thread Direction
Right-hand
Thread Length
0.313 inches
Fastener Length
Between 0.350 inches and 0.370 inches
Head Style
Flat chamfer
Head Diameter
0.438 inches
Head Height
Between 0.105 inches and 0.115 inches
First Diameter From Head
Between 0.175 inches and 0.185 inches
Distance From Largest Bearing Surface Of Head To End Of First Diameter
Between 0.037 inches and 0.057 inches
Internal Drive Style
Cross recess type 1
Thread Diameter
0.250 inches
Thready Qty Per Inch (tpi)
20
Externally Relieved Body Diameter Quantity
1
Material Specification
Qq-s-633 federal specification single material response
Thread Series Designator
Unc
FSC
5305 Screws
NIIN
005504938
NSN
5305005504938

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
775-107
Cage Code:
02622
Status:
A
MSDS:
Part Number:
8247-8-4
Cage Code:
81336
Status:
A
MSDS:

Q & A

Frequently asked questions for NSN 5305-00-550-4938
What are the manufacturers of nsn 5305005504938?
Does this nsn 5305005504938 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5305005504938
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.
Does nsn 5305005504938 contain any precious metals?
Precious metal content is unknown.
Does nsn 5305005504938 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5305005504938?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
01852
FIIG:
A003B0
App. Key:
SE
Cond. Code:
1
Status:
A

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