The Bolt,internally Relieved Body, cataloged under National Stock Number 5306-00-172-9449, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Raytheon Company Dba Raytheon Co. Government technical data includes 20 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-172-9449 |
| Primary Part Number | 575745-1 |
| Item Name | Bolt,internally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Raytheon Company Dba Raytheon Co |
| Status | ACTIVE |
| Head Height | 0.200 INCHES NOMINAL IN |
| Fastener Length | 0.250 INCHES NOMINAL IN |
| Concentric Hole Depth | 0.190 INCHES NOMINAL IN |
| Thread Length | 0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN |
| Hole Configuration Style | HEXAGON LONGITUDINAL HOLE |
| Style Designator | CONCENTRIC HOLE UNTHREADED |
| Material Document and Classification | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.620 INCHES NOMINAL IN |
| Concentric Hole Diameter | 0.141 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 630 OVERALL |
| Hole Quantity | 3 |
| Thread Series Designator | UNF |
| Hole Type | DRILLED |
| Hole Diameter | 0.063 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 5306-00-172-9449 is a Bolt,internally Relieved Body, manufactured by Raytheon Company Dba Raytheon Co, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-172-9449 has 2 manufacturer part numbers on file: 575745-1 (Raytheon Company), 575745-1 (Raytheon Company Dba Raytheon Co).
1 possible match (shared part number, not a government interchangeability claim): 6150-00-941-0316. Verify interchangeability with system specifications before substitution.
Key specifications for 575745-1: Head Height: 0.200 INCHES NOMINAL IN; Fastener Length: 0.250 INCHES NOMINAL IN; Concentric Hole Depth: 0.190 INCHES NOMINAL IN; Thread Length: 0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN. 20 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.