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Close Tolerance Bolt

NSN: 5306-01-043-6880 | Model: 69-12132-3

An externally threaded fastener whose unthreaded portion is of a specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten-thousandths (0.0015) of an inch (0.038 mm) or less. The major diameter of the threads shall be at least one thousandth (0.001) of an inch (0.025 mm) below the shank diameter, but not below the major diameter for applicable class of fit, as shown in the screw thread standards, federal standard h28 and/or other nationally recognized standards. The head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160, 000 pounds per square inch (1100 megapascals) tensile strength, see bolt, shear. For items fabricated from material having less than 160, 000 pounds per square inch (1100 megapascals) tensile strength and not having a close tolerance, see bolt, machine.

NSN Properties and Flags
NATO Stock Number
Thread Class
Thread Direction
Thread Length
Between 0.510 inches and 0.550 inches
Fastener Length
Between 3.360 inches and 3.380 inches
Head Style
Head Height
Between 0.375 inches and 0.390 inches
Width Between Flats
Between 1.052 inches and 1.064 inches
Grip Diameter
Between 0.7490 inches and 0.7495 inches
Shank Unthreaded Hole Diameter
0.141 inches first hole and 0.151 inches first hole
Thread Diameter
0.750 inches
Grip Length
Between 2.830 inches and 2.850 inches
Thready Qty Per Inch (tpi)
Distance From Head Largest Bearing Surface To Shank Hole Center
3.220 inches first hole and 3.240 inches first hole
Surface Finish
32.0 microinches grip
Steel comp 4340 or steel comp 4140 or steel comp 8630
Surface Treatment
Cadmium head and chromate head
Thread Series Designator

Inventory Check

The last inventory check on this NSN was done on 09/23/2021. Due to rapid changes in inventory this may not be the current stock qty.

  • New Surplus: 24
  • New: 206
  • Serviceable: 1

Pricing and Availability

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NSN 5306-01-043-6880 Datasheet

Supply Class (FSC):
Cross Reference:
  • 69-12132-3
Cage Codes:
  • The Boeing Company (CAGE 81205)
Schedule B & Trade:
  • Schedule B: 7318152000 (NAICS 332722)

    Bolts and bolts and their nuts or washers exported in the same shipment

  • SITC: 69421

    Screws, bolts, nuts, screw hooks, rivets, washers and similar articles, threaded, of iron or steel

  • End Use: 12110

    Iron and steel products, other


N - Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.


U - Precious metal content is unknown


- The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Freight Information:
  • NMFC:

    093486 - Bolts, nuts or screws, noi (sub 3)

  • WCC:

    573 - Bolts or nuts (iron or steel),(less than 35 feet)

  • SHC:

    9 - Other or no special handling required (sh)

  • ADC:

    A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.

  • ACC:

    B - Construction materials: includes paint and related materials, prefabricated building, wood products, metal and composition mater

  • LTL:

    W - Rating variable

  • TCC:

    Z - No special type of cargo code applicable

NSN Management Codes:
  • SOS
  • AAC
  • Quantity per pack
  • Unit of Measure
  • Shelf Life
  • Classification Control
  • Repariability

Questions & Answers:

What are the historical prices recorded for this stock number?
Historical data shows pricing from $350.16 to $583.61..
Does NSN 5306-01-043-6880 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Department Of The Air Force, Department Of The Navy, Brazil, and Singapore
What is the NIIN of NSN 5306-01-043-6880?
010436880 or 01-043-6880
Does NSN 5306-01-043-6880 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 5306-01-043-6880?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Jun 28, 1977