The Bit,auger, cataloged under National Stock Number 5133-01-388-9911, is classified within Federal Supply Class 5133 (Drill Bits, Counterbores, and Countersinks: Hand and Machine) of the Hand Tools group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5133-01-388-9911 |
| Item Name | Bit,auger |
| FSC / FSG | 5133 / 51 — Drill Bits, Counterbores, and Countersinks: Hand and Machine |
| Status | ACTIVE |
| Width Across Flats | 0.3125 INCHES NOMINAL IN |
| Cutting End Style | HOLLOW CENTER SINGLE TWIST W/SCREW POINT |
| Nominal Cutting Diameter | 0.6875 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 |
| Reference | Meaning |
|---|---|
| 49911 | 5/9 Secondary reference Irwin Industrial Tool Company |
| 49911 | 3/9 Design control — primary reference Irwin Industrial Tool Company Dba Irwin Construction Accessories |
NSN 5133-01-388-9911 is a Bit,auger, classified under FSC 5133, Drill Bits, Counterbores, and Countersinks: Hand and Machine. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6685-01-664-8963. Verify interchangeability with system specifications before substitution.
Key specifications for 5133-01-388-9911: 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: 0.6875 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.