The Key,socket Head Screw, cataloged under National Stock Number 5120-00-189-2991, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Ngk Metals Corporation Dba N G K Berylco. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 9 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 | 5120-00-189-2991 |
| Primary Part Number | L-5 |
| Item Name | Key,socket Head Screw |
| FSC / FSG | 5120 / 51 — No Item Name Available |
| Manufacturer | Ngk Metals Corporation Dba N G K Berylco |
| Status | CANCELLED |
| Style Designator | L-HANDLE |
| Wrenching Surface Size | 0.156 INCHES NOMINAL BOTH ENDS IN |
| Wrenching Surface Shape | HEXAGON BOTH ENDS EXTERNAL |
| Long Arm Length | 2.500 INCHES NOMINAL IN |
| Material | COPPER ALLOY OVERALL |
| Short Arm Length | 0.875 INCHES NOMINAL IN |
| Features Provided | NONMAGNETIC AND NONSPARKING |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| L-5 PRIMARY | Ngk Metals Corporation Dba N G K Berylco (USA) |
| A-A-2477 | Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA) |
| L-5-2555 | Ngk Metals Corporation Dba N G K Berylco (USA) |
| 109-231 | Element14 Pty Ltd (AUS) |
| W-1050-B | Ampco Partners, Ltd. Dba Ampco Safety Tools (USA) |
| W-1050-B | Ampco Metal Inc. Dba Ampco Metal Inc (USA) |
| MIL-K-21120 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| 58ALL5/32 | Atkins Carlyle Ltd (AUS) |
| WH-5/32 PRIMARY | Ampco Partners, Ltd. Dba Ampco Safety Tools (USA) |
| 6522A15 | Mcmaster-Carr Supply Co (USA) |
| DH 0040 | Ampco Partners, Ltd. Dba Ampco Safety Tools (USA) |
| 0198 0909 | Blackwood J. Blackwood & Son Pty Ltd (AUS) |
NSN 5120-00-189-2991 is a Key,socket Head Screw, manufactured by Ngk Metals Corporation Dba N G K Berylco, classified under FSC 5120 (No Item Name Available). Status: cancelled.
NSN 5120-00-189-2991 has 12 cross-referenced part numbers: L-5 (Ngk Metals Corporation Dba N G K Berylco), A-A-2477 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), L-5-2555 (Ngk Metals Corporation Dba N G K Berylco), 109-231 (Element14 Pty Ltd), W-1050-B (Ampco Partners, Ltd. Dba Ampco Safety Tools) and 7 more.
There are 12 known substitutes for 5120-00-189-2991: 4320-00-146-4642, 5120-00-189-2979, 5120-00-189-2980 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for L-5: Style Designator: L-HANDLE; Wrenching Surface Size: 0.156 INCHES NOMINAL BOTH ENDS IN; Overall Length: 2.656 INCHES NOMINAL IN; Wrenching Surface Shape: HEXAGON BOTH ENDS EXTERNAL. 8 total characteristics are documented in the Federal Logistics Information System.
NSN 5120-00-189-2991 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.