The Clamp,bar, cataloged under National Stock Number 5120-01-657-7978, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Irwin Industrial Tool Company Dba Irwin Construction Accessories. Government technical data includes 1 verified specification, 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5120-01-657-7978 |
| Primary Part Number | 512QCN |
| Item Name | Clamp,bar |
| FSC / FSG | 5120 / 51 — No Item Name Available |
| Manufacturer | Irwin Industrial Tool Company Dba Irwin Construction Accessories |
| Status | CANCELLED |
| General Characteristics Item Description | PATENTED LOCKING SWIVEL JAW; REMOVEABLE PADS; 0 TO 12 IN CLAMPING CA IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 512QCN | Irwin Industrial Tool Company Dba Irwin Construction Accessories (USA) |
| 01-372-3074 | Replacement NSN of Temporarily Maintained NSN |
NSN 5120-01-657-7978 is a Clamp,bar, manufactured by Irwin Industrial Tool Company Dba Irwin Construction Accessories, classified under FSC 5120 (No Item Name Available). Status: cancelled.
NSN 5120-01-657-7978 has 2 cross-referenced part numbers: 512QCN (Irwin Industrial Tool Company Dba Irwin Construction Accessories), 01-372-3074 (Replacement NSN of Temporarily Maintained NSN).
There is 1 known substitute for 5120-01-657-7978: 5120-01-372-3074. Verify interchangeability with system specifications before substitution.
Key specifications for 512QCN: Part Name Assigned by Controlling Agency: SL300 ONE HANDED BAR CLAMPS / SPREADERS; Special Features: SL300 ONE HANDLE BAR CLAMPS SPREADERS; General Characteristics Item Description: PATENTED LOCKING SWIVEL JAW; REMOVEABLE PADS; 0 TO 12 IN CLAMPING CA IN. 3 total characteristics are documented in the Federal Logistics Information System.
NSN 5120-01-657-7978 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.