Pilot, Counterbore3460-01-139-4133

NSN 3460-01-139-4133 · NIIN 011394133 · Part number P-44A

Wright Machine & Tool Co., Inc. · FSC 3460 — Machine Tool Accessories · FSG 34 — Metalworking Machinery (continued) · CAGE 62981

Government record, cited

NSN 3460-01-139-4133 — this item is cataloged by the U.S. Government under National Stock Number 3460-01-139-4133. Manufacturer of record part number: P-44A.

Also searched as 3460-01-139-4133 · 3460011394133 · NIIN 011394133 · 01-139-4133 · FSC 3460 Machine Tool Accessories · CAGE 62981 · P-44A

Nearby stock numbers ← 3460-01-139-4045 Arbor Assembly · 3460-01-139-4134 Pilot, Counterbore →

Features

Pilot,counterbore — FSC 3460
Shank Diameter: 0.250 INCHES NOMINAL IN
Shank Type: THREADED
Head Length: 0.625 INCHES NOMINAL IN
Head Diameter: 0.570 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN
1 manufacturer part number on file
Manufacturer of record: Wright Machine & Tool Co., Inc.

Identification

NSN: 3460-01-139-4133
NIIN: 011394133
FSC: 3460 — Machine Tool Accessories
FSG: 34 — Metalworking Machinery (continued)
Primary part number: P-44A
Manufacturer: Wright Machine & Tool Co., Inc.

General Description

The Pilot,counterbore, cataloged under National Stock Number 3460-01-139-4133, is classified within Federal Supply Class 3460 (Machine Tool Accessories) of the Metalworking Machinery (continued) group. The manufacturer of record is Wright Machine & Tool Co., Inc.. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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	3460-01-139-4133
Primary Part Number	P-44A
Item Name	Pilot,counterbore
FSC / FSG	3460 / 34 — Machine Tool Accessories
Manufacturer	Wright Machine & Tool Co., Inc.
Status	ACTIVE
Shank Diameter	0.250 INCHES NOMINAL IN
Shank Type	THREADED
Head Length	0.625 INCHES NOMINAL IN
Head Diameter	0.570 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN

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

Part Number	Manufacturer
P-44A PRIMARY	Wright Machine & Tool Co., Inc. (USA)

Reference documents

Reference	Meaning
P-44A	5/9 Secondary reference Ex-Cell-O Corp Tool and Abrasive Products Div

Frequently Asked Questions

What is NSN 3460-01-139-4133?

NSN 3460-01-139-4133 is a Pilot,counterbore, manufactured by Wright Machine & Tool Co., Inc., classified under FSC 3460, Machine Tool Accessories. Status: active.

What part numbers are listed for NSN 3460-01-139-4133?

NSN 3460-01-139-4133 has 1 manufacturer part number on file: P-44A (Wright Machine & Tool Co., Inc.).

What are the specifications of P-44A?

Key specifications for P-44A: Shank Diameter: 0.250 INCHES NOMINAL IN; Shank Type: THREADED; Head Length: 0.625 INCHES NOMINAL IN; Head Diameter: 0.570 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN. 4 specifications are documented in the U.S. Government catalog.

Is NSN 3460-01-139-4133 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.

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