PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

IS-237Socket,wire Rope

Esmet Inc · NSN 4030-00-249-3000 · FSC 4030 · No Item Name Available
Verified by PartsTable
NSN 4030-00-249-3000 — this item is cataloged by the U.S. Government under National Stock Number 4030-00-249-3000. Primary manufacturer part number: IS-237.
Features
  • Socket,wire Rope — FSC 4030
  • Material: STEEL
  • Bolt Hole Diameter: 0.516 INCHES NOMINAL IN
  • Style Designator: CLOSED
  • Features Provided: WEDGE
  • Accommodated Material Diameter: 0.375 INCHES NOMINAL IN
  • Nondefinitive Spec/std Data: 1 TYPE AND D CLASS
  • Tongue Thickness: 0.422 INCHES NOMINAL IN
Applications
  • Electrical power distribution
  • Signal transmission
  • Equipment interconnection
  • Applications requiring Steel construction
General Description

The Socket,wire Rope, cataloged under National Stock Number 4030-00-249-3000, is classified within Federal Supply Class 4030 (No Item Name Available) of the Rope, Cable, Chain, and Fittings group. The primary manufacturer of record is Esmet Inc. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4030-00-249-3000
Primary Part NumberIS-237
Item NameSocket,wire Rope
FSC / FSG4030 / 40 — No Item Name Available
ManufacturerEsmet Inc
StatusCANCELLED
MaterialSTEEL
Bolt Hole Diameter0.516 INCHES NOMINAL IN
Style DesignatorCLOSED
Features ProvidedWEDGE
Accommodated Material Diameter0.375 INCHES NOMINAL IN
Nondefinitive Spec/std Data1 TYPE AND D CLASS
Tongue Thickness0.422 INCHES NOMINAL IN
Surface TreatmentCADMIUM OR ZINC
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
8010-01-609-4025 INTERCHANGEABLE
Thinner,paint Products
Cross-Reference Index
Part NumberManufacturer
IS-237 Esmet Inc (USA)
MIL-S-21433 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
8010-01-609-4025INTERCHANGEABLE
THINNER,PAINT PRODUCTS

Frequently Asked Questions

What is NSN 4030-00-249-3000?

NSN 4030-00-249-3000 is a Socket,wire Rope, manufactured by Esmet Inc, classified under FSC 4030 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4030-00-249-3000?

NSN 4030-00-249-3000 has 2 cross-referenced part numbers: IS-237 (Esmet Inc), MIL-S-21433 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 4030-00-249-3000?

There is 1 known substitute for 4030-00-249-3000: 8010-01-609-4025. Verify interchangeability with system specifications before substitution.

What are the specifications of IS-237?

Key specifications for IS-237: Material: STEEL; Bolt Hole Diameter: 0.516 INCHES NOMINAL IN; Style Designator: CLOSED; Features Provided: WEDGE. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4030-00-249-3000 still in active supply?

NSN 4030-00-249-3000 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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