The Bolt,internally Relieved Body, cataloged under National Stock Number 5306-01-453-6781, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-453-6781 |
| Primary Part Number | 14-20001-3 |
| Item Name | Bolt,internally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Head Height | 0.230 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN |
| Fastener Length | 4.440 INCHES MINIMUM AND 4.480 INCHES MAXIMUM IN |
| Concentric Hole Depth | 1.550 INCHES NOMINAL IN |
| Thread Length | 0.880 INCHES MINIMUM AND 0.920 INCHES MAXIMUM IN |
| Hardness Rating | 43.0 ROCKWELL C MINIMUM OVERALL |
| Style Designator | CONCENTRIC HOLE UNTHREADED |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.438 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 1.248 INCHES MINIMUM AND 1.255 INCHES MAXIMUM IN |
| Shoulder Diameter | 1.1802 INCHES MINIMUM AND 1.1832 INCHES MAXIMUM IN |
| Concentric Hole Diameter | 0.812 INCHES NOMINAL IN |
| Minimum Tensile Strength | 200000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP XM-13 OVERALL |
| Shoulder Length | 3.560 INCHES NOMINAL IN |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 14-20001-3 | Aerometals, Inc. (USA) |
| 14-20001-3 | Quality Socket Screw Manufacturing Corp (USA) |
| 14-20001-3 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 14-20001-3 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
| 14-20001-3 | 5/9 Secondary reference Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector |
| 14-20001-3 | 5/2 Secondary reference U.S. Government activity |
NSN 5306-01-453-6781 is a Bolt,internally Relieved Body, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-453-6781 has 3 manufacturer part numbers on file: 14-20001-3 (Aerometals, Inc.), 14-20001-3 (Quality Socket Screw Manufacturing Corp), 14-20001-3 (Northrop Grumman Systems Corporation).
Key specifications for 14-20001-3: Head Height: 0.230 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN; Fastener Length: 4.440 INCHES MINIMUM AND 4.480 INCHES MAXIMUM IN; Concentric Hole Depth: 1.550 INCHES NOMINAL IN; Thread Length: 0.880 INCHES MINIMUM AND 0.920 INCHES MAXIMUM 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.