Screw Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
Thickness: 0.156 INCHES NOMINAL IN
Identification
NSN: 3040-01-052-6938
NIIN: 010526938
FSC: 3040 — Miscellaneous Power Transmission Equipment
FSG: 30 — Mechanical Power Transmission Equipment
General Description
The Clamp,hub, cataloged under National Stock Number 3040-01-052-6938, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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
3040-01-052-6938
Item Name
Clamp,hub
FSC / FSG
3040 / 30 — Miscellaneous Power Transmission Equipment
Status
ACTIVE
Clamp Securing Hole Style
THREADED
Style Designator
ROUND, SINGLE BOLT SECURED
Outside Diameter
0.562 INCHES NOMINAL IN
Nominal Thread Size
0.086 INCHES IN
Screw Thread Series Designator
UNIFIED NATIONAL COARSE (UNC)
Thickness
0.156 INCHES NOMINAL 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
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
2001985-1
3/2Design control — primary reference
U.S. Government activity
No interchangeability data on file.
Other items in FSC 3040 — Miscellaneous Power Transmission Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3040-00-001-0046
3040-00-001-0046 · Item name not on file
3040-00-001-0047
3040-00-001-0047 · Item name not on file
3040-00-001-0048
3040-00-001-0048 · Item name not on file
3040-00-001-0068
3040-00-001-0068 · Item name not on file
3040-00-001-0077
3040-00-001-0077 · Item name not on file
3040-00-001-0078
3040-00-001-0078 · Item name not on file
3040-00-001-0089
3040-00-001-0089 · Item name not on file
3040-00-001-1224
3040-00-001-1224 · Item name not on file
Frequently Asked Questions
What is NSN 3040-01-052-6938?
NSN 3040-01-052-6938 is a Clamp,hub, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
What are the specifications of 3040-01-052-6938?
Key specifications for 3040-01-052-6938: Clamp Securing Hole Style: THREADED; Style Designator: ROUND, SINGLE BOLT SECURED; Outside Diameter: 0.562 INCHES NOMINAL IN; Nominal Thread Size: 0.086 INCHES IN. 6 specifications are documented in the U.S. Government catalog.
Is NSN 3040-01-052-6938 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.