The Bolt,eye, cataloged under National Stock Number 5306-00-263-1424, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Siemens Energy, Inc.. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-263-1424 |
| Primary Part Number | 237A |
| Item Name | Bolt,eye |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Siemens Energy, Inc. |
| Status | ACTIVE |
| Eye Stock Diameter | 0.438 INCHES NOMINAL IN |
| Thread Length | 1.500 INCHES MINIMUM IN |
| Shank Length | 2.000 INCHES NOMINAL IN |
| Style Designator | ROUND, CLOSED |
| Material Document and Classification | MIL-S-890 CL BS MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Distance From Center of Eye to Shank End | 3.031 INCHES NOMINAL IN |
| Eye Inside Diameter | 1.188 INCHES NOMINAL IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 13 |
| Material | STEEL 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 |
|---|---|
| 237A PRIMARY | Siemens Energy, Inc. (USA) |
| G10125PC34 PRIMARY | Siemens Energy, Inc. (USA) |
| G8693PC64 PRIMARY | Siemens Energy, Inc. (USA) |
| 25J428-20 PRIMARY | Westinghouse Electric Corp (USA) |
| Reference | Meaning |
|---|---|
| AVC1S6100-095PC20 | 3/2 Design control — primary reference U.S. Government activity |
| DD692S4101-319PC20 | 3/2 Design control — primary reference U.S. Government activity |
| AM82S42-195PC435 | 3/2 Design control — primary reference U.S. Government activity |
| AM136S42-130PC229 | 3/2 Design control — primary reference U.S. Government activity |
| AVC1S6100-019PC20 | 3/2 Design control — primary reference U.S. Government activity |
| DD445S4200-37ALT3PC64 | 3/2 Design control — primary reference U.S. Government activity |
| DD692S4200-51ALT3PC34 | 3/2 Design control — primary reference U.S. Government activity |
| 25J428-20 | 3/9 Design control — primary reference Westinghouse Electric Corp Control Business Unit |
NSN 5306-00-263-1424 is a Bolt,eye, manufactured by Siemens Energy, Inc., classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-263-1424 has 4 manufacturer part numbers on file: 237A (Siemens Energy, Inc.), G10125PC34 (Siemens Energy, Inc.), G8693PC64 (Siemens Energy, Inc.), 25J428-20 (Westinghouse Electric Corp).
1 possible match (shared part number, not a government interchangeability claim): 4820-00-963-0928. Verify interchangeability with system specifications before substitution.
Key specifications for 237A: Eye Stock Diameter: 0.438 INCHES NOMINAL IN; Thread Length: 1.500 INCHES MINIMUM IN; Shank Length: 2.000 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.