The Bar,bucking,rivet, cataloged under National Stock Number 5120-00-242-9203, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Chief of Engineers Dept of Army. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5120-00-242-9203 |
| Primary Part Number | A1556-1A |
| Item Name | Bar,bucking,rivet |
| FSC / FSG | 5120 / 51 — No Item Name Available |
| Manufacturer | Chief of Engineers Dept of Army |
| Status | ACTIVE |
| Nondefinitive Spec/std Data | IX TYPE AND 2 SIZE |
| Taper Length | 4.250 INCHES NOMINAL IN |
| Recess Diameter | 0.500 INCHES NOMINAL IN |
| Tool Style Designator | BB3 |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| A1556-1A | Chief of Engineers Dept of Army (USA) |
| MIL-B-920 TY9SZ2 | General Services Administration Federal Supply Service (USA) |
| A-A-52123 | Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA) |
| AA52123-IX | General Services Administration Federal Supply Service (USA) |
| MIL-B-920 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
NSN 5120-00-242-9203 is a Bar,bucking,rivet, manufactured by Chief of Engineers Dept of Army, classified under FSC 5120 (No Item Name Available). Status: active.
NSN 5120-00-242-9203 has 5 cross-referenced part numbers: A1556-1A (Chief of Engineers Dept of Army), MIL-B-920 TY9SZ2 (General Services Administration Federal Supply Service), A-A-52123 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), AA52123-IX (General Services Administration Federal Supply Service), MIL-B-920 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).
There are 12 known substitutes for 5120-00-242-9203: 5120-00-177-7050, 5120-00-240-2530, 5120-00-240-2532 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for A1556-1A: Nondefinitive Spec/std Data: IX TYPE AND 2 SIZE; Taper Length: 4.250 INCHES NOMINAL IN; Recess Diameter: 0.500 INCHES NOMINAL IN; Overall Length: 23.250 INCHES NOMINAL IN. 5 total characteristics are documented in the Federal Logistics Information System.