The Screwdriver Attachment,socket Wr, cataloged under National Stock Number 5120-01-399-9802, is classified within Federal Supply Class 5120 (Hand Tools, Nonedged, Nonpowered) of the Hand Tools group. The manufacturer of record is The Stanley Works Dba Stanley Proto. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5120-01-399-9802 |
| Primary Part Number | J4739-20W |
| Item Name | Screwdriver Attachment,socket Wr |
| FSC / FSG | 5120 / 51 — Hand Tools, Nonedged, Nonpowered |
| Manufacturer | The Stanley Works Dba Stanley Proto |
| Status | ACTIVE |
| Tip Size Designation | T20 |
| Drive Surface Size | 0.250 INCHES NOMINAL SINGLE END IN |
| Style Designator | TORX |
| Blade Length | 0.688 INCHES NOMINAL IN |
| Features Provided | MANUAL TOOL AND REPLACEABLE BIT |
| Wrenching Surface Shape | 6 POINT STAR SINGLE END EXTERNAL |
| Surface Treatment | CHROMIUM DRIVE SURFACE |
| Surface Treatment | OXIDE BIT |
| 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 |
|---|---|
| J4739-20W | Henchman Group Pty Ltd the Trustee for Henchman Unit Trust (AUS) |
| 5C611 | W.w. Grainger, Inc. Div Government Sales Division (USA) |
| J4739-20W PRIMARY | The Stanley Works Dba Stanley Proto (USA) |
| Reference | Meaning |
|---|---|
| 4739-20W | 5/9 Secondary reference The Stanley Works Dba Stanley Proto |
| J4739-20W | 5/9 Secondary reference Henchman Products Pty Ltd |
NSN 5120-01-399-9802 is a Screwdriver Attachment,socket Wr, manufactured by The Stanley Works Dba Stanley Proto, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: active.
NSN 5120-01-399-9802 has 3 manufacturer part numbers on file: J4739-20W (Henchman Group Pty Ltd the Trustee for Henchman Unit Trust), 5C611 (W.w. Grainger, Inc. Div Government Sales Division), J4739-20W (The Stanley Works Dba Stanley Proto).
1 possible match (shared part number, not a government interchangeability claim): 5120-01-652-1092. Verify interchangeability with system specifications before substitution.
Key specifications for J4739-20W: Tip Size Designation: T20; Drive Surface Size: 0.250 INCHES NOMINAL SINGLE END IN; Style Designator: TORX; Overall Length: 1.562 INCHES NOMINAL IN. 9 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.