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Close Tolerance Screw NSN 5305-01-198-7982

Item Description

A screw, machine or screw, cap, socket head whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 in.) (0.025 mm) or less of a specific diameter for items (1.000 in.) (25 mm) or less in diameter. Items over (1.000 in.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 in.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 in.) (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. The head is designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.

NSN 5305-01-198-7982 NSN: 5305-01-198-7982

Features and Characteristics

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.306 inches and 0.357 inches
Fastener Length
Between 2.540 inches and 2.560 inches
Head Style
Flat chamfer
Head Diameter
Between 0.610 inches and 0.625 inches
Head Height
Between 0.157 inches and 0.172 inches
Locking Feature
Detent ball grip
Grip Diameter
Between 0.3112 inches and 0.3117 inches
Shank Unthreaded Hole Diameter
0.076 inches first hole and 0.086 inches first hole
Internal Drive Style
Slot
Thread Diameter
0.312 inches
Grip Length
Between 2.062 inches and 2.078 inches
Thready Qty Per Inch (tpi)
24
Min. Tensile Strength (psi)
63000 pounds per square inch
Distance From Head Largest Bearing Surface To Shank Hole Center
2.427 inches first hole and 2.447 inches first hole
Surface Finish
32.0 microinches grip
Part Name Assigned By Controlling Agency
Navy special project
Material
Steel comp 632 fastener
Material Specification
Astm a580 cond. A assn standard single material response spring
Surface Treatment
Passivate
Surface Treatment Specification
Qq-p-35 federal specification single treatment response
Thread Series Designator
Unjf
FSC
5305 Screws
NIIN
011987982
NSN
5305011987982

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
MS21125B533
Cage Code:
80205
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 5305-01-198-7982
What are the manufacturers of nsn 5305011987982?
Does this nsn 5305011987982 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5305011987982
A screw, machine or screw, cap, socket head whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 in.) (0.025 mm) or less of a specific diameter for items (1.000 in.) (25 mm) or less in diameter. items over (1.000 in.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 in.) (0.038 mm) or less. the nominal major diameter of the threads shall be at least one thousandth (0.001 in.) (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. the head is designed to be held or driven with an inserted driver. it is not designed for rotation by the thumb and fingers. a locking feature may be incorporated in the design of the head or threads.
Does nsn 5305011987982 contain any precious metals?
No precious metal content.
Does nsn 5305011987982 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5305011987982?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
29294
FIIG:
A003B0
App. Key:
SS
Cond. Code:
1
Status:
A

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  •   On Time Delivery
  •   Certificate of Conformance
  •   Quality Inspected Parts
  •   Quality Fast Service
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