The Bolt,eye, cataloged under National Stock Number 5306-00-657-8714, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Smith and Smith Aircraft Co. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-657-8714 |
| Primary Part Number | 159-54121-3 |
| Item Name | Bolt,eye |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Smith and Smith Aircraft Co |
| Status | ACTIVE |
| Eye Stock Diameter | 0.250 INCHES NOMINAL IN |
| Thread Length | 0.500 INCHES NOMINAL IN |
| Material Document and Classification | QQ-S-630 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Eye Inside Diameter | 0.125 INCHES NOMINAL IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 1020 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Eye Outside Width | 0.438 INCHES NOMINAL 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 |
|---|---|
| 159-54121-3 PRIMARY | Smith and Smith Aircraft Co (USA) |
| 159-54121-3 | The Boeing Company Div Legacy Am&m (USA) |
| Reference | Meaning |
|---|---|
| 159-54121-3 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-00-657-8714 is a Bolt,eye, manufactured by Smith and Smith Aircraft Co, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-657-8714 has 2 manufacturer part numbers on file: 159-54121-3 (Smith and Smith Aircraft Co), 159-54121-3 (The Boeing Company Div Legacy Am&m).
Key specifications for 159-54121-3: Eye Stock Diameter: 0.250 INCHES NOMINAL IN; Thread Length: 0.500 INCHES NOMINAL IN; Material Document and Classification: QQ-S-630 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Overall Length: 1.171 INCHES NOMINAL IN. 11 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.