Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
Features Provided: INTEGRAL PILOT
Departure From Cited Designator: AS MOD BY FLUTE QTY
Identification
NSN: 5133-00-293-2305
NIIN: 002932305
FSC: 5133 — Drill Bits, Counterbores, and Countersinks: Hand and Machine
FSG: 51 — Hand Tools
General Description
The Cutter,countersink, cataloged under National Stock Number 5133-00-293-2305, is classified within Federal Supply Class 5133 (Drill Bits, Counterbores, and Countersinks: Hand and Machine) of the Hand Tools group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5133-00-293-2305
Item Name
Cutter,countersink
FSC / FSG
5133 / 51 — Drill Bits, Counterbores, and Countersinks: Hand and Machine
Status
ACTIVE
Body Diameter
0.875 INCHES NOMINAL IN
Point Diameter
0.375 INCHES NOMINAL IN
Cutting End Style
STRAIGHT FLUTE BLUNT END
Taper Shank Size Designator
2 JARNO
Hardness Rating
40.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
Features Provided
INTEGRAL PILOT
Departure From Cited Designator
AS MOD BY FLUTE QTY
Pilot Diameter
0.375 INCHES NOMINAL IN
Nondefinitive Spec/std Data
1 CLASS AND A STYLE AND 0 SIZE
Shank Style
STANDARD TAPER-ROUND
Flute Quantity
3
Included Angle
78.0 DEGREES NOMINAL
Material
STEEL OVERALL
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items6
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5133-00-293-2306293-2307POSSIBLE MATCH
CUTTER,COUNTERSINK
Possible match (shared part number)General Services Administration Federal Supply Service
5133-00-293-2308POSSIBLE MATCH
CUTTER,COUNTERSINK
Possible match (shared part number)
5133-00-294-4598POSSIBLE MATCH
CUTTER,COUNTERSINK
Possible match (shared part number)
5133-00-294-4599POSSIBLE MATCH
CUTTER,COUNTERSINK
Possible match (shared part number)
5133-00-595-8219POSSIBLE MATCH
CUTTER,COUNTERSINK
Possible match (shared part number)
5360-00-967-48056028BPOSSIBLE MATCH
SPRING,HELICAL,COMPRESSION
Possible match (shared part number)Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
6028B
5/1Secondary reference
Learjet Inc
MIL-H-4081
4/1Identification reference
U.S. Government activity
293-2307
5/1Secondary reference
U.S. Government activity
Related Parts
5133-00-293-2306POSSIBLE MATCH
CUTTER,COUNTERSINK
293-2307
5133-00-293-2308POSSIBLE MATCH
CUTTER,COUNTERSINK
5133-00-294-4598POSSIBLE MATCH
CUTTER,COUNTERSINK
5133-00-294-4599POSSIBLE MATCH
CUTTER,COUNTERSINK
5133-00-595-8219POSSIBLE MATCH
CUTTER,COUNTERSINK
5360-00-967-4805POSSIBLE MATCH
SPRING,HELICAL,COMPRESSION
6028B
Frequently Asked Questions
What is NSN 5133-00-293-2305?
NSN 5133-00-293-2305 is a Cutter,countersink, classified under FSC 5133, Drill Bits, Counterbores, and Countersinks: Hand and Machine. Status: active.
What NSN replaces 5133-00-293-2305?
6 possible matches (shared part number, not a government interchangeability claim): 5133-00-293-2306, 5133-00-293-2308, 5133-00-294-4598. Verify interchangeability with system specifications before substitution.
What are the specifications of 5133-00-293-2305?
Key specifications for 5133-00-293-2305: Body Diameter: 0.875 INCHES NOMINAL IN; Point Diameter: 0.375 INCHES NOMINAL IN; Cutting End Style: STRAIGHT FLUTE BLUNT END; Taper Shank Size Designator: 2 JARNO. 13 specifications are documented in the U.S. Government catalog.
Is NSN 5133-00-293-2305 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.