The Bolt,internally Relieved Body, cataloged under National Stock Number 5306-00-693-6576, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Corporation Div Rotary and Mission Systems. Government technical data includes 19 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-693-6576 |
| Primary Part Number | 272-4600249 |
| Item Name | Bolt,internally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Lockheed Martin Corporation Div Rotary and Mission Systems |
| Status | ACTIVE |
| Head Height | 0.200 INCHES NOMINAL IN |
| Fastener Length | 2.284 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-P-6808 MIL SPEC SINGLE TREATMENT RESPONSE OR MIL-P-6889 TY 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.547 INCHES MINIMUM IN |
| Style Designator | CONCENTRIC HOLE UNTHREADED |
| Material Document and Classification | MIL-S-18732 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 1.125 INCHES NOMINAL IN |
| Shoulder Diameter | 0.7493 INCHES MINIMUM AND 0.7498 INCHES MAXIMUM IN |
| Concentric Hole Diameter | 0.250 INCHES NOMINAL IN |
| Surface Treatment | CHROMATE ZINC OVERALL |
| Minimum Tensile Strength | 175000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL COMP 431 OVERALL |
| Shoulder Length | 1.647 INCHES NOMINAL IN |
| 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 |
|---|---|
| 272-4600249 PRIMARY | Lockheed Martin Corporation Div Rotary and Mission Systems (USA) |
NSN 5306-00-693-6576 is a Bolt,internally Relieved Body, manufactured by Lockheed Martin Corporation Div Rotary and Mission Systems, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-693-6576 has 1 manufacturer part number on file: 272-4600249 (Lockheed Martin Corporation Div Rotary and Mission Systems).
Key specifications for 272-4600249: Head Height: 0.200 INCHES NOMINAL IN; Fastener Length: 2.284 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-P-6808 MIL SPEC SINGLE TREATMENT RESPONSE OR MIL-P-6889 TY 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.547 INCHES MINIMUM IN. 19 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.