The Bolt,shoulder, cataloged under National Stock Number 5306-01-280-5677, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Isometrics Inc. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-280-5677 |
| Primary Part Number | 214A-3 |
| Item Name | Bolt,shoulder |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Isometrics Inc |
| Status | ACTIVE |
| Head Height | 0.500 INCHES NOMINAL IN |
| Fastener Length | 11.406 INCHES NOMINAL IN |
| Shoulder Length | 8.406 INCHES NOMINAL FIRST SHOULDER IN |
| Shoulder Diameter | 2.250 INCHES NOMINAL FIRST SHOULDER IN |
| Thread Length | 2.500 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Shank Unthreaded Hole Diameter | 0.266 INCHES NOMINAL FIRST HOLE IN |
| Nominal Thread Diameter | 2.000 INCHES IN |
| Head Style | ROUND W/WRENCH FLATS |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 2.188 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 12 |
| Material | STEEL OVERALL |
| Thread Series Designator | UN |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 10.656 INCHES NOMINAL FIRST HOLE IN |
| Head Diameter | 3.875 INCHES MINIMUM AND 3.938 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 214A-3 PRIMARY | Isometrics Inc (USA) |
NSN 5306-01-280-5677 is a Bolt,shoulder, manufactured by Isometrics Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-280-5677 has 1 manufacturer part number on file: 214A-3 (Isometrics Inc).
Key specifications for 214A-3: Head Height: 0.500 INCHES NOMINAL IN; Fastener Length: 11.406 INCHES NOMINAL IN; Shoulder Length: 8.406 INCHES NOMINAL FIRST SHOULDER IN; Shoulder Diameter: 2.250 INCHES NOMINAL FIRST SHOULDER IN. 17 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.