The Grease Fitting Tool, cataloged under National Stock Number 5120-00-910-8370, is classified within Federal Supply Class 5120 (Hand Tools, Nonedged, Nonpowered) of the Hand Tools group. The manufacturer of record is Stewart-Warner Corporation. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5120-00-910-8370 |
| Primary Part Number | B315791 |
| Item Name | Grease Fitting Tool |
| FSC / FSG | 5120 / 51 — Hand Tools, Nonedged, Nonpowered |
| Manufacturer | Stewart-Warner Corporation |
| Status | ACTIVE |
| General Characteristics Item Description | DESIGNED FOR STRAIGHT AND OFFSET 1/8 IN PIPE THREAD GREASE FITTINGS,REMOVE BROKEN FITTINGS AND RE-THREAD CROSSED OR MASHED THREADS. 1/8 IN PIPE THREAD TAP ON ONE ARM,EXTRACTOR FOR BROKEN FITTINGS ON THE OPPOSITC ARM,7/16 IN 12 POINT SOCKET 11/16 IN DEEP,3/8 IN HEX 12 POINT SOCKET. 1/4 IN OVERALLLENGTH OF SOCKET WRENCH BODY,3-5/16 IN PLUS OR MINUS 1/2 IN OVERALL LENGTH OF EXTRACTOR AND TAP ARM IN |
| 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 |
|---|---|
| B315791 PRIMARY | Stewart-Warner Corporation (USA) |
| Reference | Meaning |
|---|---|
| 315791 | 5/9 Secondary reference Stewart-Warner Corporation |
NSN 5120-00-910-8370 is a Grease Fitting Tool, manufactured by Stewart-Warner Corporation, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: active.
NSN 5120-00-910-8370 has 1 manufacturer part number on file: B315791 (Stewart-Warner Corporation).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-554-0548. Verify interchangeability with system specifications before substitution.
Key specifications for B315791: General Characteristics Item Description: DESIGNED FOR STRAIGHT AND OFFSET 1/8 IN PIPE THREAD GREASE FITTINGS,REMOVE BROKEN FITTINGS AND RE-THREAD CROSSED OR MASHED THREADS. 1/8 IN PIPE THREAD TAP ON ONE ARM,EXTRACTOR FOR BROKEN FITTINGS ON THE OPPOSITC ARM,7/16 IN 12 POINT SOCKET 11/16 IN DEEP,3/8 IN HEX 12 POINT SOCKET. 1/4 IN OVERALLLENGTH OF SOCKET WRENCH BODY,3-5/16 IN PLUS OR MINUS 1/2 IN OVERALL LENGTH OF EXTRACTOR AND TAP ARM IN. 1 specification is 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.