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MS24678-28C

View detailed technical data, stock status, and sourcing information for: MS24678-28C

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MS24678-28C
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5306 Bolts
National Stock Number
5306-00-682-7731
Item Name Code
06666
Assigment Date
01/01/1960 (66 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes:items with bevel (conical) heads. See bolt, internal wrenching. Excludes:screw, shoulder; and screw, machine.

flat chamfer head style, 3a thread class, right-hand thread direction, 0.960 inches minimum and 1.250 inches maximum thread length, 1.960 inches minimum and 2.000 inches maximum fastener length

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class
3a
Thread Direction
right-hand
Thread Length
0.960 inches minimum and 1.250 inches maximum
Fastener Length
1.960 inches minimum and 2.000 inches maximum
Head Style
flat chamfer
Head Diameter
0.365 inches minimum and 0.375 inches maximum
Head Height
0.244 inches minimum and 0.250 inches maximum
Hole Diameter
0.047 inches nominal
Internal Drive Style
hexagon
Nominal Thread Diameter
0.250 inches
Width Across Flats
0.187 inches minimum and 0.190 inches maximum
Hole Quantity
6
Hole Type
drilled
Thread Quantity Per Inch
28
Minimum Tensile Strength
170000 pounds per square inch
Hardness Rating
38.0 rockwell c minimum and 45.0 rockwell c maximum overall
Minimum Yield Strength
150000 pounds per square inch
Hole Configuration Style
round longitudinal hole
Material
steel overall
Surface Treatment
cadmium and chromate overall
Surface Treatment Document And Classification
qq-p-416,type 2 cl 3 fed spec single treatment response overall
Thread Series Designator
unf
Nondefinitive Spec/Std Data
4 type

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number Name
MS24678-28 Internal Wrenching Bolt
MS24678-28C Internal Wrenching Bolt
NASM24678-MS24678-28 Internal Wrenching Bolt

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5306-00-682-7731?
The FSCG of the NSN 5306-00-682-7731 is 5306
Does the NSN 5306-00-682-7731 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5306-00-682-7731 require demilitarization?
Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Does NSN 5306-00-682-7731 contain precious materials?
Precious metal content is unknown
Does NSN 5306-00-682-7731 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 5306-00-682-7731 was assigned to the Federal Catalog?
It was assigned 66 years ago, on Fri, Jan 1, 1960

Professional Distribution

Certified to meet the strict requirements of defense, aerospace, and hazardous materials distribution.

  • ITAR Registered
  • DDTC Registered
  • HAZMAT Certified
  • AS9120 Quality Standards
  • 100% Quality Inspections

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Pricing

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ITAR Registered

In Stock

This item is currently available and ready for prompt shipment. Units may be offered in various conditions — new, surplus, or refurbished — and stored at verified global facilities. Request a quote to confirm current stock and delivery time.

New Material 702
New Surplus 437
Total 1,139
Availability of this item was last updated on: 05/25/2026 08:05 AM EDT. Stock levels and pricing are subject to change.

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