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Close Tolerance Screw NSN 5305-01-277-7326

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 5305-01-277-7326 NSN: 5305-01-277-7326

Features and Characteristics

Thread Class
3a
Thread Direction
Right-hand
Thread Length
Between 0.338 inches and 0.388 inches
Fastener Length
Between 1.411 inches and 1.441 inches
Head Style
Flat countersunk undercut
Head Diameter
Between 0.339 inches and 0.381 inches
Head Height
Between 0.044 inches and 0.046 inches
Grip Diameter
Between 0.1890 inches and 0.1895 inches
Internal Drive Style
Torque-set ribbed
Thread Diameter
0.190 inches
Grip Length
Between 1.053 inches and 1.073 inches
Features Provided
O ring and cetyl alcohol lubricant
Thready Qty Per Inch (tpi)
32
Min. Tensile Strength (psi)
160000 pounds per square inch
Countersink Angle
Between 99.0 degrees and 101.0 degrees
Surface Finish
32.0 microinches threads
Part Name Assigned By Controlling Agency
Navy special project
Special Features
O-ring inside diameter 0.174 in. Min, 0.184 in. Max; o-ring thickness 0.023 in. Min, 0.027 in. Max
Material
Steel comp 8740 fastener
Material Specification
Mil-r-6855 cl1 gr 60 military specification single material response ring
Surface Treatment
Cadmium fastener and chromate fastener
Surface Treatment Specification
Qq-p-416 ty2 cl2 federal specification single treatment response fastener
Thread Series Designator
Unjf
FSC
5305 Screws
NIIN
012777326
NSN
5305012777326

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
123463S3-17
Cage Code:
80539
Status:
A
MSDS:
Part Number:
HR243E3-17
Cage Code:
73197
Status:
A
MSDS:
Part Number:
GB510DY3S17
Cage Code:
26512
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 5305-01-277-7326
What are the manufacturers of nsn 5305012777326?
Does this nsn 5305012777326 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5305012777326
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 5305012777326 contain any precious metals?
No precious metal content.
Does nsn 5305012777326 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5305012777326?
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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