The Bolt,eye, cataloged under National Stock Number 5306-00-377-8745, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 13 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 | 5306-00-377-8745 |
| Primary Part Number | 4F4403 |
| Item Name | Bolt,eye |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Eye Stock Diameter | 0.437 INCHES NOMINAL IN |
| Thread Length | 1.375 INCHES MINIMUM IN |
| Shank Length | 1.781 INCHES NOMINAL IN |
| Style Designator | ROUND, CLOSED |
| Material Document and Classification | FSCM IE42-11083 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Distance From Center of Eye to Shank End | 2.125 INCHES NOMINAL IN |
| Eye Inside Diameter | 0.374 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| 4F4403 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 5306-00-377-8745 is a Bolt,eye, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-377-8745 has 1 manufacturer part number on file: 4F4403 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 4F4403: Eye Stock Diameter: 0.437 INCHES NOMINAL IN; Thread Length: 1.375 INCHES MINIMUM IN; Shank Length: 1.781 INCHES NOMINAL IN; Style Designator: ROUND, CLOSED. 13 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.