The Clamp,bellmouth Assembly, cataloged under National Stock Number 4920-00-078-0477, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Clampco Products, Inc.. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-00-078-0477 |
| Primary Part Number | 99639-1700 |
| Item Name | Clamp,bellmouth Assembly |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Clampco Products, Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | 301 STAINLESS STEEL BAND AND RETAINER; 18-8 STAINLESS STEEL BOLT AND ALL-METAL STAINLESS STEEL LOCKNUT; COUPLING STYLE 4; BOLT,SIZE 5.16 - 18; 4.500 IN. MIN DIA; 0.880 BY 0.060 IN. BAND WIDTH AND GAUGE 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 |
|---|---|
| 99639-1700 PRIMARY | Clampco Products, Inc. (USA) |
| Reference | Meaning |
|---|---|
| MV84764-KS-1700-V | 5/9 Secondary reference Aeroquip Corp Transportation Products Div Lawrence Plant |
| MV84754-KS-1700-V | 5/9 Secondary reference Aeroquip Corp Transportation Products Div Lawrence Plant |
| 4706-6-1700 | 5/9 Secondary reference Specialty Products Co Div of Clampco Products Inc |
NSN 4920-00-078-0477 is a Clamp,bellmouth Assembly, manufactured by Clampco Products, Inc., classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-00-078-0477 has 1 manufacturer part number on file: 99639-1700 (Clampco Products, Inc.).
Key specifications for 99639-1700: General Characteristics Item Description: 301 STAINLESS STEEL BAND AND RETAINER; 18-8 STAINLESS STEEL BOLT AND ALL-METAL STAINLESS STEEL LOCKNUT; COUPLING STYLE 4; BOLT,SIZE 5.16 - 18; 4.500 IN. MIN DIA; 0.880 BY 0.060 IN. BAND WIDTH AND GAUGE IN; End Item Identification: 4920-00-776-1068,BELLMOUTH ASSEMBLY. 1 specification is 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.