The Crowfoot Wrench Attachment,socke, cataloged under National Stock Number 5120-00-277-1502, is classified within Federal Supply Class 5120 (Hand Tools, Nonedged, Nonpowered) of the Hand Tools group. The manufacturer of record is Wta Tool Llc. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5120-00-277-1502 |
| Primary Part Number | 4189 |
| Item Name | Crowfoot Wrench Attachment,socke |
| FSC / FSG | 5120 / 51 — Hand Tools, Nonedged, Nonpowered |
| Manufacturer | Wta Tool Llc |
| Status | ACTIVE |
| Drive Surface Size | 0.678 INCHES NOMINAL SINGLE END IN |
| Wrenching Surface Size | 0.186 INCHES MINIMUM AND 0.188 INCHES MAXIMUM SINGLE END IN |
| Style Designator | KEY |
| Outside Diameter | 0.673 INCHES MINIMUM AND 0.683 INCHES MAXIMUM IN |
| Wrenching Surface Shape | HEXAGON SINGLE END EXTERNAL |
| Drive End Shape | HEXAGON SINGLE END EXTERNAL |
| Surface Treatment | CHROMIUM AND NICKEL AND OXIDE OVERALL |
| Material | STEEL OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 4189 | Wta Tool Llc (USA) |
| Reference | Meaning |
|---|---|
| 4189 | 3/9 Design control — primary reference Granco Industries Inc |
| GGG-W-646 | 5/9 Secondary reference U.S. Government activity |
| GIT-4189 | 5/9 Secondary reference Granco Industries Inc |
| GGG-W-646 TY2CL3FMATM163 | 5/9 Secondary reference U.S. Government activity |
NSN 5120-00-277-1502 is a Crowfoot Wrench Attachment,socke, manufactured by Wta Tool Llc, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: active.
NSN 5120-00-277-1502 has 1 manufacturer part number on file: 4189 (Wta Tool Llc).
4 possible matches (shared part number, not a government interchangeability claim): 5950-00-949-5377, 6640-01-117-7153, 5360-01-252-5088. Verify interchangeability with system specifications before substitution.
Key specifications for 4189: Drive Surface Size: 0.678 INCHES NOMINAL SINGLE END IN; Wrenching Surface Size: 0.186 INCHES MINIMUM AND 0.188 INCHES MAXIMUM SINGLE END IN; Style Designator: KEY; Overall Length: 0.783 INCHES MINIMUM AND 0.847 INCHES MAXIMUM IN. 8 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.