The Race,ball Lock, cataloged under National Stock Number 1650-00-494-9607, 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 Kell-Strom Tool International, Inc.. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-00-494-9607 |
| Primary Part Number | A51H10525-11 |
| Item Name | Race,ball Lock |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Kell-Strom Tool International, Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | CRES,PASSIVATED,1.803 IN. MIN 1.804 IN.MAX OD,1.130 IN. MIN1.131 IN. MAX ID,0.717 IN. MIN 0.721 IN. MAX H 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 |
|---|---|
| A51H10525-11 | Kell-Strom Tool International, Inc. (USA) |
| A51H10525-11 | S & L Aerospace Metals Llc (USA) |
| Reference | Meaning |
|---|---|
| A51H10525 | D/9 Drawing number reference only Northrop Grumman Systems Corporation |
| A51H10525-11 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| A51H10525-11 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
| A51H10525-11 | 5/9 Secondary reference Tek Precision Co Limited |
| A51H10525-11 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
NSN 1650-00-494-9607 is a Race,ball Lock, manufactured by Kell-Strom Tool International, Inc., classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-00-494-9607 has 2 manufacturer part numbers on file: A51H10525-11 (Kell-Strom Tool International, Inc.), A51H10525-11 (S & L Aerospace Metals Llc).
Key specifications for A51H10525-11: General Characteristics Item Description: CRES,PASSIVATED,1.803 IN. MIN 1.804 IN.MAX OD,1.130 IN. MIN1.131 IN. MAX ID,0.717 IN. MIN 0.721 IN. MAX H IN. 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.