MS27576-4-21
View detailed technical data, stock status, and sourcing information for: MS27576-4-21
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Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5306 Bolts
National Stock Number
5306-00-408-6858
Item Name Code
27851
Assigment Date
07/10/1970 (56 years ago)
1.731 inches minimum and 1.751 inches maximum fastener length, 0.283 inches minimum and 0.334 inches maximum thread length, dished hexagon head style, 3a thread class, right-hand thread direction
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
- 0.283 inches minimum and 0.334 inches maximum
- Fastener Length
- 1.731 inches minimum and 1.751 inches maximum
- Head Style
- dished hexagon
- Head Height
- 0.126 inches minimum and 0.141 inches maximum
- Width Between Flats
- 0.430 inches minimum and 0.439 inches maximum
- Grip Diameter
- 0.2483 inches minimum and 0.2492 inches maximum
- Shank Unthreaded Hole Diameter
- 0.076 inches minimum and 0.086 inches maximum first hole
- Nominal Thread Diameter
- 0.250 inches
- Grip Length
- 1.312 inches minimum and 1.328 inches maximum
- Thread Quantity Per Inch
- 28
- Hardness Rating
- 36.0 rockwell c minimum and 41.0 rockwell c maximum overall
- Distance From Head Largest Bearing Surface To Shank Hole Center
- 1.631 inches minimum and 1.661 inches maximum first hole
- Surface Finish
- 63.0 microinches bearing surface of head
- Surface Finish
- 63.0 microinches grip
- Special Features
- w/retaining element on shank
- Material
- steel overall
- Material Document And Classification
- mil-b-83050 mil spec single material response overall
- Surface Treatment
- cadmium and chromate overall
- Surface Treatment Document And Classification
- qq-p-416,ty 2,cl 2 fed spec all treatment responses overall
- Thread Series Designator
- unjf
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 |
|---|---|
| 106467-4-21 | Close Tolerance Bolt |
| AS194-4-21 | Close Tolerance Bolt |
| CA4510-4-21 | Close Tolerance Bolt |
| CIPRD-MS27576-4-21R | Close Tolerance Bolt |
| MS27576-4-21 | Close Tolerance Bolt |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5306-00-408-6858?
The FSCG of the NSN 5306-00-408-6858 is 5306
Does the NSN 5306-00-408-6858 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5306-00-408-6858 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 5306-00-408-6858 contain precious materials?
Precious metal content is unknown
Does NSN 5306-00-408-6858 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 5306-00-408-6858 was assigned to the Federal Catalog?
It was assigned 56 years ago, on Fri, Jul 10, 1970
Professional Distribution
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Pricing
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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 Surplus | 17 |
| New Material | 180 |
| Total | 197 |
Availability of this item was last updated on:
06/03/2026 11:06 AM EDT.
Stock levels and pricing are subject to change.