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Close Tolerance Screw NSN 5305-01-197-4000

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 5305-01-197-4000 NSN: 5305-01-197-4000

Features and Characteristics

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.278 inches and 0.329 inches
Fastener Length
Between 1.981 inches and 2.001 inches
Head Style
Flat countersunk
Head Diameter
Between 0.449 inches and 0.507 inches
Locking Feature
Detent ball grip
Grip Diameter
Between 0.2487 inches and 0.2492 inches
Shank Unthreaded Hole Diameter
0.076 inches first hole and 0.086 inches first hole
Internal Drive Style
High-torque
Thread Diameter
0.250 inches
Grip Length
Between 1.562 inches and 1.578 inches
Thready Qty Per Inch (tpi)
28
Min. Tensile Strength (psi)
63000 pounds per square inch
Hardness Rating
43.0 rockwell c fastener and 47.0 rockwell c fastener
Countersink Angle
Between 99.0 degrees and 101.0 degrees
Distance From Head Largest Bearing Surface To Shank Hole Center
1.885 inches first hole and 1.905 inches first hole
Surface Finish
32.0 microinches grip
Material
Steel comp 632 fastener
Material Specification
Ams 5629 assn standard single material response fastener
Surface Treatment
Passivate
Surface Treatment Specification
Qq-p-35 federal specification single treatment response
Thread Series Designator
Unjf
FSC
5305 Screws
NIIN
011974000
NSN
5305011974000

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
MS21130B425
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 5305-01-197-4000
What are the manufacturers of nsn 5305011974000?
Does this nsn 5305011974000 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5305011974000
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 5305011974000 contain any precious metals?
No precious metal content.
Does nsn 5305011974000 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5305011974000?
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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