The Clamp-Block Assembly, cataloged under National Stock Number 1650-01-194-4313, is classified within Federal Supply Class 1650 (Aircraft Hydraulic, Vacuum, and De-icing System Components) of the Aircraft Components and Accessories group. The manufacturer of record is Lobo Ventures Ltd Dba Precision Mold & Tool-Government Division. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-01-194-4313 |
| Primary Part Number | 4P28631-107A |
| Item Name | Clamp-Block Assembly |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Lobo Ventures Ltd Dba Precision Mold & Tool-Government Division |
| Status | ACTIVE |
| FSC Application Data | AIRCRAFT HYDRAULIC SYSTEM |
| General Characteristics Item Description | 4P28631-103A CLAMP BLOCK,MAPLE BLOCK.MATERIAL; 4.320 IN. LG; 3.800 IN. H; 0.900 IN. THK; TWO THRU HOLES 0.204 IN. DIA; BLOCK CUT THRU 1.900 IN. FROM END; CENTER HOLE 3.310 IN. DIA; INSERT 4P28631-105A; 0.060 IN. THK; 1.000 IN. W; 6.000 IN. LG; MATERIAL SYNTHETIC RUBBER A |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 4P28631-107A | Lobo Ventures Ltd Dba Precision Mold & Tool-Government Division (USA) |
| Reference | Meaning |
|---|---|
| 4P28631-107A | 3/2 Design control — primary reference U.S. Government activity |
NSN 1650-01-194-4313 is a Clamp-Block Assembly, manufactured by Lobo Ventures Ltd Dba Precision Mold & Tool-Government Division, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-01-194-4313 has 1 manufacturer part number on file: 4P28631-107A (Lobo Ventures Ltd Dba Precision Mold & Tool-Government Division).
Key specifications for 4P28631-107A: FSC Application Data: AIRCRAFT HYDRAULIC SYSTEM; General Characteristics Item Description: 4P28631-103A CLAMP BLOCK,MAPLE BLOCK.MATERIAL; 4.320 IN. LG; 3.800 IN. H; 0.900 IN. THK; TWO THRU HOLES 0.204 IN. DIA; BLOCK CUT THRU 1.900 IN. FROM END; CENTER HOLE 3.310 IN. DIA; INSERT 4P28631-105A; 0.060 IN. THK; 1.000 IN. W; 6.000 IN. LG; MATERIAL SYNTHETIC RUBBER A; End Item Identification: AIRCRAFT C-5B. 2 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.
NSN 1650-01-194-4313 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.