The Clamp,hub, cataloged under National Stock Number 3040-00-818-2175, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp. Government technical data includes 14 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 | 3040-00-818-2175 |
| Primary Part Number | 623526 |
| Item Name | Clamp,hub |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| Status | ACTIVE |
| Surface Finish | 63 MICROINCHES OVERALL |
| Plain Hole Diameter | 0.0950 INCHES MINIMUM AND 0.1000 INCHES MAXIMUM IN |
| Balance Type | STATIC |
| Surface Treatment Document and Classification | 990104 06481 MFR REF SINGLE TREATMENT RESPONSE |
| Clamp Securing Hole Style | THREADED |
| Style Designator | ROUND SECTIONAL, TWO BOLT SECURED |
| Material Document and Classification | AMS 5643 ASSN STD 1ST MATERIAL RESPONSE AND MIL-S-7720 MIL SPEC 2ND MATERIAL RESPONSE |
| Outside Diameter | 0.652 INCHES NOMINAL IN |
| Nominal Thread Size | 0.086 INCHES IN |
| Screw Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Surface Treatment | PASSIVATE |
| Bore Diameter | 0.2440 INCHES MINIMUM AND 0.2450 INCHES MAXIMUM IN |
| Material | STEEL COMP 630 OR STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 316 |
| Thickness | 0.140 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 623526 PRIMARY | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA) |
NSN 3040-00-818-2175 is a Clamp,hub, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-818-2175 has 1 manufacturer part number on file: 623526 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp).
Key specifications for 623526: Surface Finish: 63 MICROINCHES OVERALL; Plain Hole Diameter: 0.0950 INCHES MINIMUM AND 0.1000 INCHES MAXIMUM IN; Balance Type: STATIC; Surface Treatment Document and Classification: 990104 06481 MFR REF SINGLE TREATMENT RESPONSE. 14 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.