The Bolt,eye, cataloged under National Stock Number 5306-01-285-3989, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is The Crosby Group Llc Dba the Crosby Group. Government technical data includes 14 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 | 5306-01-285-3989 |
| Primary Part Number | G-291 5/16X2 1/4 |
| Item Name | Bolt,eye |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Crosby Group Llc Dba the Crosby Group |
| Status | ACTIVE |
| Eye Stock Diameter | 0.312 INCHES NOMINAL IN |
| Thread Length | 1.500 INCHES NOMINAL IN |
| Shank Length | 2.250 INCHES NOMINAL IN |
| Style Designator | ROUND, CLOSED |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Features Provided | HEX NUT |
| Thread Direction | RIGHT-HAND |
| Distance From Center of Eye to Shank End | 2.875 INCHES NOMINAL IN |
| Surface Treatment | ZINC OVERALL |
| Eye Inside Diameter | 0.625 INCHES NOMINAL IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL COMP 1035 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| G-291 5/16X2 1/4 PRIMARY | The Crosby Group Llc Dba the Crosby Group (USA) |
NSN 5306-01-285-3989 is a Bolt,eye, manufactured by The Crosby Group Llc Dba the Crosby Group, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-285-3989 has 1 manufacturer part number on file: G-291 5/16X2 1/4 (The Crosby Group Llc Dba the Crosby Group).
Key specifications for G-291 5/16X2 1/4: Eye Stock Diameter: 0.312 INCHES NOMINAL IN; Thread Length: 1.500 INCHES NOMINAL IN; Shank Length: 2.250 INCHES NOMINAL IN; Style Designator: ROUND, CLOSED. 14 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.