The Bolt,eye, cataloged under National Stock Number 5306-01-083-1523, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems. Government technical data includes 18 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-083-1523 |
| Primary Part Number | 172A1252 |
| Item Name | Bolt,eye |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems |
| Status | ACTIVE |
| Eye Stock Diameter | 0.440 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-P-16232 TY M CL 3 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-P-16232 TY Z CL 3 MIL SPEC 2ND TREATMENT RESPONSE OVERALL |
| Thread Length | 1.120 INCHES MINIMUM IN |
| Shank Length | 1.500 INCHES MINIMUM AND 1.620 INCHES MAXIMUM IN |
| Style Designator | ROUND, CLOSED W/SHOULDER |
| Material Document and Classification | MIL-B-45908 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 | 2.810 INCHES MINIMUM AND 3.060 INCHES MAXIMUM IN |
| Shoulder Diameter | 0.880 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN |
| Shoulder Thickness | 0.190 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Surface Treatment | PHOSPHATE MANGANESE OR PHOSPHATE ZINC OVERALL |
| Eye Inside Diameter | 1.120 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 13 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Eye Outside Width | 2.120 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 |
NSN 5306-01-083-1523 is a Bolt,eye, manufactured by General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-083-1523 has 2 manufacturer part numbers on file: 172A1252 (General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems), 172A1252 (Bi-Tec Industries Inc).
Key specifications for 172A1252: Eye Stock Diameter: 0.440 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-P-16232 TY M CL 3 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-P-16232 TY Z CL 3 MIL SPEC 2ND TREATMENT RESPONSE OVERALL; Thread Length: 1.120 INCHES MINIMUM IN; Shank Length: 1.500 INCHES MINIMUM AND 1.620 INCHES MAXIMUM IN. 18 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.