The Bolt,machine, cataloged under National Stock Number 5306-01-489-1246, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is C & L Aerospace Pty Ltd. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-489-1246 |
| Primary Part Number | NAS7503U7 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | C & L Aerospace Pty Ltd |
| Status | ACTIVE |
| Fastener Length | 0.751 INCHES MINIMUM AND 0.771 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.746 INCHES MINIMUM AND 0.776 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.338 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN |
| 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 |
|---|---|
| NAS7503U7 | C & L Aerospace Pty Ltd (AUS) |
| NAS7503U7 | Leonardo Spa Aeronautics Division - Pomigliano D'arco Site (ITA) |
| Reference | Meaning |
|---|---|
| NAS7503U7 | 3/2 Design control — primary reference U.S. Government activity |
| NAS7503U7 | 5/1 Secondary reference Heartland Precision Fasteners Inc |
NSN 5306-01-489-1246 is a Bolt,machine, manufactured by C & L Aerospace Pty Ltd, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-489-1246 has 2 manufacturer part numbers on file: NAS7503U7 (C & L Aerospace Pty Ltd), NAS7503U7 (Leonardo Spa Aeronautics Division - Pomigliano D'arco Site).
Key specifications for NAS7503U7: Fastener Length: 0.751 INCHES MINIMUM AND 0.771 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.746 INCHES MINIMUM AND 0.776 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.190 INCHES IN. 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.