The Extension,socket Wrench, cataloged under National Stock Number 5120-01-021-2683, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Federal Commercial Item Description Promulgated by General Services Administration Washington DC. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5120-01-021-2683 |
| Primary Part Number | A-A-2171 |
| Item Name | Extension,socket Wrench |
| FSC / FSG | 5120 / 51 — No Item Name Available |
| Manufacturer | Federal Commercial Item Description Promulgated by General Services Administration Washington DC |
| Status | ACTIVE |
| Drive Surface Size | 0.250 INCHES NOMINAL BOTH ENDS IN |
| Drive End Shape | SQUARE FIRST END INTERNAL |
| Drive End Shape | SQUARE SECOND END EXTERNAL |
| Outside Diameter | 0.438 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Nondefinitive Spec/std Data | 2 TYPE AND 2 CLASS AND B STYLE |
| Surface Treatment | CHROMIUM OVERALL |
| Specification/standard Data | 05047-ASME B107.110 CAT 10 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Style Designator | FLEXIBLE |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| A-A-2171 | Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA) |
| MF4 | Stanley Industrial & Automotive Llc (USA) |
| MF4 | Matco Tools Corp Div Matco Tools (USA) |
| GGG-W-641 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
| B107.10 | The American Society of Mechanical Engineers (USA) |
| 2993752-4 | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| B107.110 | The American Society of Mechanical Engineers (USA) |
| B107.10 TY2CL2STB | General Services Administration Federal Supply Service (USA) |
| B107.110 CAT 10 TY2CL2STB | General Services Administration Federal Supply Service (USA) |
NSN 5120-01-021-2683 is a Extension,socket Wrench, manufactured by Federal Commercial Item Description Promulgated by General Services Administration Washington DC, classified under FSC 5120 (No Item Name Available). Status: active.
NSN 5120-01-021-2683 has 9 cross-referenced part numbers: A-A-2171 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), MF4 (Stanley Industrial & Automotive Llc), MF4 (Matco Tools Corp Div Matco Tools), GGG-W-641 (Federal Specifications Promulgated by General Services Administration Washington DC), B107.10 (The American Society of Mechanical Engineers) and 4 more.
There are 8 known substitutes for 5120-01-021-2683: 5120-00-022-9797, 3110-00-198-2253, 5120-00-240-1532 and 5 more. Verify interchangeability with system specifications before substitution.
Key specifications for A-A-2171: Drive Surface Size: 0.250 INCHES NOMINAL BOTH ENDS IN; Drive End Shape: SQUARE FIRST END INTERNAL; Drive End Shape: SQUARE SECOND END EXTERNAL; Outside Diameter: 0.438 INCHES NOMINAL IN. 10 total characteristics are documented in the Federal Logistics Information System.