The Bit,spade,wood Boring, cataloged under National Stock Number 5133-01-017-8305, 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6 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5133-01-017-8305 |
| Item Name | Bit,spade,wood Boring |
| FSC / FSG | 5133 / 51 — Drill Bits, Counterbores, and Countersinks: Hand and Machine |
| Status | ACTIVE |
| Width Across Flats | 0.250 INCHES NOMINAL IN |
| Cutting End Style | FLAT HEAD MACHINE W/BRAD POINT |
| Hardness Rating | 40.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM |
| Nominal Cutting Diameter | 0.4375 INCHES IN |
| Shank Style | HEXAGON W/SHOULDER |
| 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 |
| Reference | Meaning |
|---|---|
| 88807 | 3/9 Design control — primary reference Irwin Industrial Tool Company Dba Irwin Construction Accessories |
| 88 7/16 | 5/9 Secondary reference Irwin Industrial Tool Company |
| 88807 | 5/9 Secondary reference Irwin Industrial Tool Company |
NSN 5133-01-017-8305 is a Bit,spade,wood Boring, classified under FSC 5133, Drill Bits, Counterbores, and Countersinks: Hand and Machine. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 3120-01-194-4819, 5365-01-313-3953, 6515-01-333-6615. Verify interchangeability with system specifications before substitution.
Key specifications for 5133-01-017-8305: Width Across Flats: 0.250 INCHES NOMINAL IN; Cutting End Style: FLAT HEAD MACHINE W/BRAD POINT; Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM; Overall Length: 6.000 INCHES NOMINAL 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.