The Wrench,box, cataloged under National Stock Number 5120-00-277-5781, 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 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5120-00-277-5781 |
| Primary Part Number | A-A-2490 |
| Item Name | Wrench,box |
| FSC / FSG | 5120 / 51 — No Item Name Available |
| Manufacturer | Federal Commercial Item Description Promulgated by General Services Administration Washington DC |
| Status | ACTIVE |
| Small End Outside Diameter | 0.734 INCHES MAXIMUM IN |
| Wrenching End Offset Angle | 15.0 DEGREES NOMINAL |
| Wrenching Surface Size | 0.438 INCHES NOMINAL FIRST END IN |
| Environmental Attribute Code | PLASTICS REMOVAL IN THE MARINE ENVIRONMENT (PRIME) PRODUCT |
| Wrenching Surface Shape | 12 POINT BOTH ENDS INTERNAL |
| Material | COPPER ALLOY OVERALL |
| Special Markings | WRENCH SIZE |
| Features Provided | NONMAGNETIC AND NONSPARKING |
| Wrenching Surface Size | 0.500 INCHES NOMINAL SECOND END IN |
| Large End Head Thickness | 0.359 INCHES MAXIMUM IN |
| Style Designator | SHALLOW ANGULAR OFFSET DOUBLE HEAD |
| Large End Outside Diameter | 0.844 INCHES MAXIMUM IN |
| Small End Head Thickness | 0.359 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 5120-00-277-5781 is a Wrench,box, manufactured by Federal Commercial Item Description Promulgated by General Services Administration Washington DC, classified under FSC 5120 (No Item Name Available). Status: active.
NSN 5120-00-277-5781 has 2 cross-referenced part numbers: A-A-2490 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), W3120 (Ampco Partners, Ltd. Dba Ampco Safety Tools).
There are 7 known substitutes for 5120-00-277-5781: 5120-00-060-8369, 5120-00-274-9653, 5120-00-274-9655 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for A-A-2490: Small End Outside Diameter: 0.734 INCHES MAXIMUM IN; Wrenching End Offset Angle: 15.0 DEGREES NOMINAL; Wrenching Surface Size: 0.438 INCHES NOMINAL FIRST END IN; Environmental Attribute Code: PLASTICS REMOVAL IN THE MARINE ENVIRONMENT (PRIME) PRODUCT. 14 total characteristics are documented in the Federal Logistics Information System.