The Bolt,eye, cataloged under National Stock Number 5306-00-271-4764, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-271-4764 |
| Item Name | Bolt,eye |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.453 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Unthreaded Hole Diameter | 0.066 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE IN |
| Shank Length | 3.391 INCHES MINIMUM AND 3.438 INCHES MAXIMUM IN |
| Style Designator | ROUND, CLOSED W/SHOULDER |
| Material Document and Classification | MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-6050 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-6098 MIL SPEC 4TH MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC 5TH MATERIAL RESPONSE OR AMS6300 ASSN STD 6TH MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Shoulder Diameter | 0.500 INCHES NOMINAL IN |
| Shoulder Thickness | 0.078 INCHES NOMINAL IN |
| Distance From Threaded End to Shank Hole Center | 3.234 INCHES MINIMUM AND 3.266 INCHES MAXIMUM FIRST HOLE IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Eye Inside Diameter | 0.190 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Eye Stock Thickness | 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4130 OR STEEL COMP 4037 OVERALL |
| Thread Series Designator | UNF |
| Eye Outside Width | 0.500 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 |
| Reference | Meaning |
|---|---|
| AN43B33 | 5/9 Secondary reference U.S. Government activity |
| AN43B33 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-00-271-4764 is a Bolt,eye, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-00-271-4764: Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.453 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN; Hardness Rating: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL; Shank Unthreaded Hole Diameter: 0.066 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE IN. 21 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.