The Key,socket Head Screw, cataloged under National Stock Number 5120-00-189-2995, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is The American Society of Mechanical Engineers. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5120-00-189-2995 |
| Primary Part Number | B18.3 |
| Item Name | Key,socket Head Screw |
| FSC / FSG | 5120 / 51 — No Item Name Available |
| Manufacturer | The American Society of Mechanical Engineers |
| Status | CANCELLED |
| Specification/standard Data | 05047-ASME B18.3 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Style Designator | L-HANDLE |
| Material | COPPER ALLOY OVERALL |
| Short Arm Length | 0.750 INCHES NOMINAL IN |
| Wrenching Surface Size | 0.063 INCHES NOMINAL BOTH ENDS IN |
| Wrenching Surface Shape | HEXAGON BOTH ENDS EXTERNAL |
| Features Provided | NONMAGNETIC AND NONSPARKING |
| Long Arm Length | 1.750 INCHES NOMINAL IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| B18.3 | The American Society of Mechanical Engineers (USA) |
| L-1-2551 | Ngk Metals Corporation Dba N G K Berylco (USA) |
| 410 1529 | Ampco Partners, Ltd. Dba Ampco Safety Tools (USA) |
| W-1050-L | Ampco Metal Inc. Dba Ampco Metal Inc (USA) |
| 0198 0307 | Blackwood J. Blackwood & Son Pty Ltd (AUS) |
| MIL-K-21120 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| W-1050-L | Ampco Partners, Ltd. Dba Ampco Safety Tools (USA) |
| A-A-2477 | Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA) |
| L-1 | Ngk Metals Corporation Dba N G K Berylco (USA) |
| DH 0016 | Ampco Partners, Ltd. Dba Ampco Safety Tools (USA) |
| 74768-2 | L3harris Technologies, Inc. Div Space and Airborne Systems (USA) |
| 410 1529 | Ampco Metal Inc. Dba Ampco Metal Inc (USA) |
NSN 5120-00-189-2995 is a Key,socket Head Screw, manufactured by The American Society of Mechanical Engineers, classified under FSC 5120 (No Item Name Available). Status: cancelled.
NSN 5120-00-189-2995 has 12 cross-referenced part numbers: B18.3 (The American Society of Mechanical Engineers), L-1-2551 (Ngk Metals Corporation Dba N G K Berylco), 410 1529 (Ampco Partners, Ltd. Dba Ampco Safety Tools), W-1050-L (Ampco Metal Inc. Dba Ampco Metal Inc), 0198 0307 (Blackwood J. Blackwood & Son Pty Ltd) and 7 more.
There are 12 known substitutes for 5120-00-189-2995: 4720-00-080-6002, 5120-00-189-2979, 5120-00-189-2980 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for B18.3: Specification/standard Data: 05047-ASME B18.3 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD; Style Designator: L-HANDLE; Material: COPPER ALLOY OVERALL; Short Arm Length: 0.750 INCHES NOMINAL IN. 9 total characteristics are documented in the Federal Logistics Information System.
NSN 5120-00-189-2995 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.