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Shoulder Screw NSN 5305-01-181-2490

Item Description

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in.) (1.5 mm) or larger. It has a round unthreaded neck or shank all or part of which is of greater diameter than the threaded portion. The head is designed to be driven with either a wrench or an inserted driver or both in sizes below no. 10 (0.190 in.) (5 mm) nominal diameter. No. 10 (0.190 in.) (5 mm) and larger sizes must be designed for any type of inserted driver, but may also provide for external wrenching of the head. A locking feature may be incorporated in the design of the head or threads. For items which are both shouldered and have an externally relieved body, use screw, externally relieved body. For items with a no. 10 (0.190 in.) (5 mm) or larger thread diameter without an inserted driver head, use bolt, shoulder. Excludes bolt, internal wrenching and screw, cap, socket head.

NSN 5305-01-181-2490 NSN: 5305-01-181-2490

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Features and Characteristics

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.480 inches and 0.500 inches
Fastener Length
Between 2.235 inches and 2.255 inches
Head Style
Flat chamfer
Head Diameter
Between 0.543 inches and 0.562 inches
Head Height
Between 0.240 inches and 0.260 inches
Shoulder Diameter
0.371 inches first shoulder and 0.373 inches first shoulder
Shoulder Length
1.745 inches first shoulder and 1.755 inches first shoulder
Internal Drive Style
Hexagon
Thread Diameter
0.312 inches
Width Across Flats
0.188 inches
Thready Qty Per Inch (tpi)
18
Shoulder Shape
Round first shoulder
Part Name Assigned By Controlling Agency
Navy special project
Material
Nickel alloy 400
Material Specification
Qq-n-281, comp a federal specification single material response
Thread Series Designator
Unc
FSC
5305 Screws
NIIN
011812490
NSN
5305011812490

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
5562235 PIECE 259
Cage Code:
53711
Status:
A
MSDS:
Part Number:
NICU-MS51975-22
Cage Code:
70318
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 7508900000
  • NAICS: 332999
  • SITC: 69975
  • Description: Other articles of nickel, nesoi (excluding cloth, grill & netting of nickel wire)
  • End Use (Code 12300):
    Finished metal shapes

Q & A

Frequently asked questions for NSN 5305-01-181-2490
What are the manufacturers of nsn 5305011812490?
Does this nsn 5305011812490 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5305011812490
An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in.) (1.5 mm) or larger. it has a round unthreaded neck or shank all or part of which is of greater diameter than the threaded portion. the head is designed to be driven with either a wrench or an inserted driver or both in sizes below no. 10 (0.190 in.) (5 mm) nominal diameter. no. 10 (0.190 in.) (5 mm) and larger sizes must be designed for any type of inserted driver, but may also provide for external wrenching of the head. a locking feature may be incorporated in the design of the head or threads. for items which are both shouldered and have an externally relieved body, use screw, externally relieved body. for items with a no. 10 (0.190 in.) (5 mm) or larger thread diameter without an inserted driver head, use bolt, shoulder. excludes bolt, internal wrenching and screw, cap, socket head.
Does nsn 5305011812490 contain any precious metals?
No precious metal content.
Does nsn 5305011812490 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5305011812490?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
22846
FIIG:
A003B0
App. Key:
SL
Cond. Code:
1
Status:
A

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