FSC 5133 — Drill Bits, Counterbores, and Countersinks: Hand and Machine · FSG 51 — Hand Tools
Government record, cited
Also searched as5133-00-243-2305 ·
5133002432305 ·
NIIN 002432305 ·
00-243-2305 ·
FSC 5133 Drill Bits, Counterbores, and Countersinks: Hand and Machine
Pilot Diameter: 0.155 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
Shank Style: STANDARD TAPER-ROUND
Identification
NSN: 5133-00-243-2305
NIIN: 002432305
FSC: 5133 — Drill Bits, Counterbores, and Countersinks: Hand and Machine
FSG: 51 — Hand Tools
General Description
The Countersink, cataloged under National Stock Number 5133-00-243-2305, is classified within Federal Supply Class 5133 (Drill Bits, Counterbores, and Countersinks: Hand and Machine) of the Hand Tools group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5133-00-243-2305
Item Name
Countersink
FSC / FSG
5133 / 51 — Drill Bits, Counterbores, and Countersinks: Hand and Machine
Status
ACTIVE
Body Diameter
0.437 INCHES NOMINAL IN
Cutting End Style
SPIRAL FLUTE POINT END
Taper Shank Size Designator
2 JARNO
Cutting Rotation Direction
RIGHT-HAND
Features Provided
INTEGRAL PILOT
Pilot Diameter
0.155 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
Shank Style
STANDARD TAPER-ROUND
Flute Quantity
2
Included Angle
115.0 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
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
MIL-H-4081
4/1Identification reference
U.S. Government activity
No interchangeability data on file.
Other items in FSC 5133 — Drill Bits, Counterbores, and Countersinks: Hand and Machine
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5133-00-001-1296
5133-00-001-1296 · Item name not on file
5133-00-001-1298
5133-00-001-1298 · Item name not on file
5133-00-005-2258
5133-00-005-2258 · Item name not on file
5133-00-005-7727
5133-00-005-7727 · Item name not on file
5133-00-005-8710
5133-00-005-8710 · Item name not on file
5133-00-005-8711
5133-00-005-8711 · Item name not on file
5133-00-005-8712
5133-00-005-8712 · Item name not on file
5133-00-005-8713
5133-00-005-8713 · Item name not on file
Frequently Asked Questions
What is NSN 5133-00-243-2305?
NSN 5133-00-243-2305 is a Countersink, classified under FSC 5133, Drill Bits, Counterbores, and Countersinks: Hand and Machine. Status: active.
What are the specifications of 5133-00-243-2305?
Key specifications for 5133-00-243-2305: Body Diameter: 0.437 INCHES NOMINAL IN; Cutting End Style: SPIRAL FLUTE POINT END; Taper Shank Size Designator: 2 JARNO; Cutting Rotation Direction: RIGHT-HAND. 10 specifications are documented in the U.S. Government catalog.
Is NSN 5133-00-243-2305 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.