PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S-421Socket,wire Rope

The Crosby Group Llc Dba the Crosby Group · NSN 4030-01-056-5534 · FSC 4030 · No Item Name Available
Verified by PartsTable
NSN 4030-01-056-5534 — this item is cataloged by the U.S. Government under National Stock Number 4030-01-056-5534. Primary manufacturer part number: S-421.
Features
  • Socket,wire Rope — FSC 4030
  • Accommodated Material Diameter: 0.625 INCHES NOMINAL IN
  • Opening Width: 1.250 INCHES MINIMUM AND 1.375 INCHES MAXIMUM IN
  • Style Designator: OPEN WEDGE
  • Features Provided: WEDGE
  • Bolt Hole Diameter: 1.188 INCHES NOMINAL IN
  • Material: STEEL
  • 3 verified cross-references
Applications
  • Electrical power distribution
  • Signal transmission
  • Equipment interconnection
  • Applications requiring Steel construction
General Description

The Socket,wire Rope, cataloged under National Stock Number 4030-01-056-5534, 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 The Crosby Group Llc Dba the Crosby Group. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4030-01-056-5534
Primary Part NumberS-421
Item NameSocket,wire Rope
FSC / FSG4030 / 40 — No Item Name Available
ManufacturerThe Crosby Group Llc Dba the Crosby Group
StatusACTIVE
Accommodated Material Diameter0.625 INCHES NOMINAL IN
Opening Width1.250 INCHES MINIMUM AND 1.375 INCHES MAXIMUM IN
Style DesignatorOPEN WEDGE
Features ProvidedWEDGE
Bolt Hole Diameter1.188 INCHES NOMINAL IN
MaterialSTEEL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
3040-00-980-0727 INTERCHANGEABLE
Shaft,straight
5930-01-091-3318S42-1 INTERCHANGEABLE
Switch,toggle
Cae Usa Inc.
5995-01-228-7931 INTERCHANGEABLE
Wiring Harness
5120-01-335-0823 INTERCHANGEABLE
Socket,socket Wrench
Cross-Reference Index
Part NumberManufacturer
S-421 Bullivants Pty Ltd (AUS)
S-421 PRIMARY The Crosby Group Llc Dba the Crosby Group (USA)
S67470 Cnh Industrial America Llc Dba Cnh America (USA)
Related Parts
3040-00-980-0727INTERCHANGEABLE
SHAFT,STRAIGHT
5930-01-091-3318INTERCHANGEABLE
SWITCH,TOGGLE
S42-1
5995-01-228-7931INTERCHANGEABLE
WIRING HARNESS
5120-01-335-0823INTERCHANGEABLE
SOCKET,SOCKET WRENCH

Frequently Asked Questions

What is NSN 4030-01-056-5534?

NSN 4030-01-056-5534 is a Socket,wire Rope, manufactured by The Crosby Group Llc Dba the Crosby Group, classified under FSC 4030 (No Item Name Available). Status: active.

What are the part numbers for NSN 4030-01-056-5534?

NSN 4030-01-056-5534 has 3 cross-referenced part numbers: S-421 (Bullivants Pty Ltd), S-421 (The Crosby Group Llc Dba the Crosby Group), S67470 (Cnh Industrial America Llc Dba Cnh America).

What NSN replaces 4030-01-056-5534?

There are 4 known substitutes for 4030-01-056-5534: 3040-00-980-0727, 5930-01-091-3318, 5995-01-228-7931 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of S-421?

Key specifications for S-421: Accommodated Material Diameter: 0.625 INCHES NOMINAL IN; Opening Width: 1.250 INCHES MINIMUM AND 1.375 INCHES MAXIMUM IN; Overall Length: 8.156 INCHES NOMINAL IN; Style Designator: OPEN WEDGE. 7 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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