The Bolt,internally Relieved Body, cataloged under National Stock Number 5306-00-446-6527, 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 18 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-446-6527 |
| Primary Part Number | 14-20003-1 |
| Item Name | Bolt,internally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Extended Washer Thickness | 0.256 INCHES NOMINAL IN |
| Head Height | 1.050 INCHES NOMINAL IN |
| Fastener Length | 5.072 INCHES MINIMUM AND 5.102 INCHES MAXIMUM IN |
| Extended Washer Diameter | 1.861 INCHES MINIMUM AND 1.871 INCHES MAXIMUM IN |
| Concentric Hole Depth | 2.350 INCHES NOMINAL IN |
| Thread Length | 1.572 INCHES MINIMUM AND 1.602 INCHES MAXIMUM IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | CONCENTRIC HOLE UNTHREADED |
| Material Document and Classification | SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 1.250 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 1.241 INCHES MINIMUM AND 1.251 INCHES MAXIMUM IN |
| Concentric Hole Diameter | 0.688 INCHES NOMINAL IN |
| Minimum Tensile Strength | 180000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 12 |
| Material | STEEL COMP 4340 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 | F |
| Part Number | Manufacturer |
|---|---|
| 14-20003-1 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 14-20003-1 | 5/1 Secondary reference Intertrade Logistics, Llc |
| 14-20003-1 | 5/9 Secondary reference Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector |
| 14-20003-1 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
| 14-20003-1 | 5/9 Secondary reference A F B Systems, Inc. Dba Sierra Tech |
NSN 5306-00-446-6527 is a Bolt,internally Relieved Body, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-446-6527 has 1 manufacturer part number on file: 14-20003-1 (Northrop Grumman Systems Corporation).
Key specifications for 14-20003-1: Extended Washer Thickness: 0.256 INCHES NOMINAL IN; Head Height: 1.050 INCHES NOMINAL IN; Fastener Length: 5.072 INCHES MINIMUM AND 5.102 INCHES MAXIMUM IN; Extended Washer Diameter: 1.861 INCHES MINIMUM AND 1.871 INCHES MAXIMUM IN. 18 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.