The Wrench,open End, cataloged under National Stock Number 5120-01-504-9709, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Armstrong Bros Tool Co. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5120-01-504-9709 |
| Primary Part Number | 27-856 |
| Item Name | Wrench,open End |
| FSC / FSG | 5120 / 51 — No Item Name Available |
| Manufacturer | Armstrong Bros Tool Co |
| Status | ACTIVE |
| Large End Head Thickness | 0.500 INCHES NOMINAL IN |
| Wrenching Surface Shape | OVAL BOTH ENDS INTERNAL |
| Small End Head Thickness | 0.500 INCHES NOMINAL IN |
| Style Designator | DOUBLE HEAD |
| Material | STEEL OVERALL |
| Small End Head Angle | 15.0 DEGREES NOMINAL |
| Large End Head Angle | 60.0 DEGREES NOMINAL |
| Surface Treatment | CHROMIUM OVERALL |
| Wrenching Surface Size | 1.750 INCHES NOMINAL BOTH ENDS IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 5120-01-504-9709 is a Wrench,open End, manufactured by Armstrong Bros Tool Co, classified under FSC 5120 (No Item Name Available). Status: active.
NSN 5120-01-504-9709 has 3 cross-referenced part numbers: 27-856 (Armstrong Bros Tool Co), 27-856 (Apex Tool Group, Llc Dba Nicholson), 27-856 (Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.).
There are 5 known substitutes for 5120-01-504-9709: 5331-00-197-9582, 5905-00-858-0172, 5950-00-884-2591 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for 27-856: Large End Head Thickness: 0.500 INCHES NOMINAL IN; Wrenching Surface Shape: OVAL BOTH ENDS INTERNAL; Small End Head Thickness: 0.500 INCHES NOMINAL IN; Style Designator: DOUBLE HEAD. 10 total characteristics are documented in the Federal Logistics Information System.