The Bit,auger, cataloged under National Stock Number 5133-01-388-9944, is classified within Federal Supply Class 5133 (Drill Bits, Counterbores, and Countersinks: Hand and Machine) of the Hand Tools group. The manufacturer of record is Southern Cross Industrial Supplies Pty Limited South Pacific Welding Group. Government technical data includes 6 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5133-01-388-9944 |
| Primary Part Number | IRWIN 20/49910 |
| Item Name | Bit,auger |
| FSC / FSG | 5133 / 51 — Drill Bits, Counterbores, and Countersinks: Hand and Machine |
| Manufacturer | Southern Cross Industrial Supplies Pty Limited South Pacific Welding Group |
| Status | ACTIVE |
| Width Across Flats | 0.3125 INCHES NOMINAL IN |
| Cutting End Style | HOLLOW CENTER SINGLE TWIST W/SCREW POINT |
| Nominal Cutting Diameter | 0.6250 INCHES IN |
| Shank Style | HEXAGON |
| Material | STEEL OVERALL |
| Twist Length | 4.5000 INCHES NOMINAL 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 |
|---|---|
| IRWIN 20/49910 | Southern Cross Industrial Supplies Pty Limited South Pacific Welding Group (AUS) |
| Reference | Meaning |
|---|---|
| IRWIN 20/49910 | 5/9 Secondary reference Southern Cross Industrial Supplies Pty Ltd |
| 49910 | 3/9 Design control — primary reference Irwin Industrial Tool Company Dba Irwin Construction Accessories |
| 49910 | 5/9 Secondary reference Irwin Industrial Tool Company |
NSN 5133-01-388-9944 is a Bit,auger, manufactured by Southern Cross Industrial Supplies Pty Limited South Pacific Welding Group, classified under FSC 5133, Drill Bits, Counterbores, and Countersinks: Hand and Machine. Status: active.
NSN 5133-01-388-9944 has 1 manufacturer part number on file: IRWIN 20/49910 (Southern Cross Industrial Supplies Pty Limited South Pacific Welding Group).
Key specifications for IRWIN 20/49910: Width Across Flats: 0.3125 INCHES NOMINAL IN; Cutting End Style: HOLLOW CENTER SINGLE TWIST W/SCREW POINT; Overall Length: 7.500 INCHES NOMINAL IN; Nominal Cutting Diameter: 0.6250 INCHES IN. 6 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.