The Bolt,internally Relieved Body, cataloged under National Stock Number 5306-01-159-5724, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Mag Aerospace Industries, Llc Div Safran Cabins. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-159-5724 |
| Primary Part Number | 801520-3 |
| Item Name | Bolt,internally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Mag Aerospace Industries, Llc Div Safran Cabins |
| Status | ACTIVE |
| Head Height | 0.328 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN |
| Fastener Length | 1.750 INCHES MINIMUM AND 1.797 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416 TY 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.484 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | CONCENTRIC HOLE UNTHREADED |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.928 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN |
| Concentric Hole Diameter | 0.437 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8640 OR STEEL COMP 8735 OR STEEL COMP 4130 OR STEEL COMP 4037 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 |
|---|---|
| 801520-3 PRIMARY | Mag Aerospace Industries, Llc Div Safran Cabins (USA) |
| Reference | Meaning |
|---|---|
| 801520-3 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5306-01-159-5724 is a Bolt,internally Relieved Body, manufactured by Mag Aerospace Industries, Llc Div Safran Cabins, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-159-5724 has 1 manufacturer part number on file: 801520-3 (Mag Aerospace Industries, Llc Div Safran Cabins).
Key specifications for 801520-3: Head Height: 0.328 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN; Fastener Length: 1.750 INCHES MINIMUM AND 1.797 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416 TY 2 CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.484 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN. 17 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.