PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

X6599Clamp,hub

Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic · NSN 3040-00-361-8301 · FSC 3040 · No Item Name Available
Verified by PartsTable
NSN 3040-00-361-8301 — this item is cataloged by the U.S. Government under National Stock Number 3040-00-361-8301. Primary manufacturer part number: X6599.
Features
  • Clamp,hub — FSC 3040
  • Material: COPPER ALLOY 932
  • Plain Hole Diameter: 0.3906 INCHES NOMINAL IN
  • Clamp Securing Hole Style: THREADED
  • Bore Diameter: 4.1290 INCHES MINIMUM AND 4.1310 INCHES MAXIMUM IN
  • Material Document and Classification: SAE CA932 ASSN STD SINGLE MATERIAL RESPONSE
  • Style Designator: ROUND SECTIONAL, TWO BOLT SECURED
  • Outside Diameter: 6.6875 INCHES NOMINAL IN
Applications
  • Applications requiring Copper Alloy 932 construction
General Description

The Clamp,hub, cataloged under National Stock Number 3040-00-361-8301, is classified within Federal Supply Class 3040 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3040-00-361-8301
Primary Part NumberX6599
Item NameClamp,hub
FSC / FSG3040 / 30 — No Item Name Available
ManufacturerTwin Disc, Incorporated Dba Twin Disc Mid-Atlantic
StatusACTIVE
MaterialCOPPER ALLOY 932
Plain Hole Diameter0.3906 INCHES NOMINAL IN
Clamp Securing Hole StyleTHREADED
Bore Diameter4.1290 INCHES MINIMUM AND 4.1310 INCHES MAXIMUM IN
Material Document and ClassificationSAE CA932 ASSN STD SINGLE MATERIAL RESPONSE
Style DesignatorROUND SECTIONAL, TWO BOLT SECURED
Outside Diameter6.6875 INCHES NOMINAL IN
Thickness0.9375 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5306-00-018-0082 INTERCHANGEABLE
Bolt,machine
5925-00-386-8532 INTERCHANGEABLE
Interrupter,ground Fault
Cross-Reference Index
Part NumberManufacturer
6599 Joy Global Underground Mining Llc (USA)
6599 Cooper Industries Inc Dba Cooper Tools (USA)
X6599 PRIMARY Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
6599 Joy Mfg Co Air Power Group Michigan City Plant (USA)
6599 Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA)
Related Parts
5306-00-018-0082INTERCHANGEABLE
BOLT,MACHINE
5925-00-386-8532INTERCHANGEABLE
INTERRUPTER,GROUND FAULT

Frequently Asked Questions

What is NSN 3040-00-361-8301?

NSN 3040-00-361-8301 is a Clamp,hub, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 3040 (No Item Name Available). Status: active.

What are the part numbers for NSN 3040-00-361-8301?

NSN 3040-00-361-8301 has 5 cross-referenced part numbers: 6599 (Joy Global Underground Mining Llc), 6599 (Cooper Industries Inc Dba Cooper Tools), X6599 (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic), 6599 (Joy Mfg Co Air Power Group Michigan City Plant), 6599 (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic).

What NSN replaces 3040-00-361-8301?

There are 2 known substitutes for 3040-00-361-8301: 5306-00-018-0082, 5925-00-386-8532. Verify interchangeability with system specifications before substitution.

What are the specifications of X6599?

Key specifications for X6599: Material: COPPER ALLOY 932; Plain Hole Diameter: 0.3906 INCHES NOMINAL IN; Clamp Securing Hole Style: THREADED; Bore Diameter: 4.1290 INCHES MINIMUM AND 4.1310 INCHES MAXIMUM IN. 8 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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