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Machine Screw NSN 5305-01-179-1258

Item Description

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.

NSN 5305-01-179-1258 NSN: 5305-01-179-1258

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Features and Characteristics

Thread Class
3a
Thread Direction
Right-hand
Thread Length
0.597 inches
Fastener Length
0.750 inches
Head Style
Flat countersunk
Head Diameter
Between 0.480 inches and 0.531 inches
End Application
2410-00-808-7100
Thread Diameter
0.250 inches
Thready Qty Per Inch (tpi)
20
Countersink Angle
Between 80.0 degrees and 84.0 degrees
Screw Material
Steel
Thread Series Designator
Unrc
FSC
5305 Screws
NIIN
011791258
NSN
5305011791258

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
151-36907
Cage Code:
24976
Status:
A
MSDS:
Part Number:
36907
Cage Code:
64294
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 7318152000
  • NAICS: 332722
  • SITC: 69421
  • Description: Bolts and bolts and their nuts or washers exported in the same shipment
  • End Use (Code 12110):
    Iron and steel products, other

Q & A

Frequently asked questions for NSN 5305-01-179-1258
What are the manufacturers of nsn 5305011791258?
Does this nsn 5305011791258 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5305011791258
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.
Does nsn 5305011791258 contain any precious metals?
No precious metal content.
Does nsn 5305011791258 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5305011791258?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
06657
FIIG:
A500D0
App. Key:
Cond. Code:
1
Status:
A

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