The Bolt,internally Relieved Body, cataloged under National Stock Number 5306-00-808-9841, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5306-00-808-9841 |
| Primary Part Number | 445101 |
| Item Name | Bolt,internally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Head Height | 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN |
| Fastener Length | 2.760 INCHES MINIMUM AND 2.820 INCHES MAXIMUM IN |
| Concentric Hole Depth | 0.186 INCHES NOMINAL IN |
| Thread Length | 0.960 INCHES MINIMUM IN |
| Hardness Rating | 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| Criticality Code Justification | FEAT |
| Hole Configuration Style | HEXAGON LONGITUDINAL HOLE |
| Style Designator | CONCENTRIC HOLE UNTHREADED |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN |
| Concentric Hole Diameter | 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN |
| Surface Treatment | NICKEL AND CADMIUM OVERALL |
| Thread Class | 1A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 601 OVERALL |
| Hole Quantity | 6 |
| Thread Series Designator | UNF |
| Hole Type | DRILLED |
| Hole Diameter | 0.070 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 | Y |
| Part Number | Manufacturer |
|---|---|
| 445101 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 445101 | Bristol Industries, Llc (USA) |
| 445101 | Necchi Spa (ITA) |
| 445101 | Deval Life Cycle Support Llc (USA) |
| Reference | Meaning |
|---|---|
| 445101 | 5/9 Secondary reference U.S. Government activity |
| 445101 | 5/2 Secondary reference U.S. Government activity |
| 445101 | 5/9 Secondary reference U.S. Government activity |
| 445101 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-00-808-9841 is a Bolt,internally Relieved Body, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-808-9841 has 4 manufacturer part numbers on file: 445101 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 445101 (Bristol Industries, Llc), 445101 (Necchi Spa), 445101 (Deval Life Cycle Support Llc).
1 possible match (shared part number, not a government interchangeability claim): 5961-01-172-4182. Verify interchangeability with system specifications before substitution.
Key specifications for 445101: Head Height: 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN; Fastener Length: 2.760 INCHES MINIMUM AND 2.820 INCHES MAXIMUM IN; Concentric Hole Depth: 0.186 INCHES NOMINAL IN; Thread Length: 0.960 INCHES MINIMUM IN. 21 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.