PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

RR-C-271Hook,slip

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 4030-00-285-9951 · FSC 4030 · No Item Name Available
Verified by PartsTable
NSN 4030-00-285-9951 — this item is cataloged by the U.S. Government under National Stock Number 4030-00-285-9951. Primary manufacturer part number: RR-C-271.
Features
  • Hook,slip — FSC 4030
  • Fabrication Method: FORGED
  • Accommodated Material Diameter: 0.750 INCHES NOMINAL IN
  • Nondefinitive Spec/std Data: 5 TYPE AND 1 CLASS
  • Material: STEEL
  • Style Designator: OPEN ENDS
  • Connection to Body Relationship: PARALLEL
  • Connection Style: ROUND EYE
Applications
  • Applications requiring Steel construction
General Description

The Hook,slip, cataloged under National Stock Number 4030-00-285-9951, 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 Federal Specifications Promulgated by General Services Administration Washington DC. Government technical data includes 7 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. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4030-00-285-9951
Primary Part NumberRR-C-271
Item NameHook,slip
FSC / FSG4030 / 40 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusCANCELLED
Fabrication MethodFORGED
Accommodated Material Diameter0.750 INCHES NOMINAL IN
Nondefinitive Spec/std Data5 TYPE AND 1 CLASS
MaterialSTEEL
Style DesignatorOPEN ENDS
Connection to Body RelationshipPARALLEL
Connection StyleROUND EYE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 11
9540-00-234-0623 INTERCHANGEABLE
Beam,structural
5136-00-239-27733506 INTERCHANGEABLE
Die,thread Cutting
Stanley Tools Div of Stanley Works
5340-00-247-052931104 INTERCHANGEABLE
Buckle
Danfoss Power Solutions II, Llc
5940-00-249-685812Z7000-1 INTERCHANGEABLE
Terminal,lug
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5935-00-257-7312 INTERCHANGEABLE
Connector,receptacle,electrical
5133-00-839-543331104 INTERCHANGEABLE
Drill,twist
Precision Twist Drill Co
5330-00-868-258431104 INTERCHANGEABLE
Gasket,spiral Wound
Flowserve Inc
3020-01-414-040131104 INTERCHANGEABLE
Gear,spur
Belfort Instrument Company
6640-01-528-25853110-4 INTERCHANGEABLE
Maintenance Bath in
Hart Scientific Llc
6515-01-656-835331104 INTERCHANGEABLE
Cannula,cardiovascular
Medtronic Inc Dlp Div
Cross-Reference Index
Part NumberManufacturer
RR-C-271 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
31104 Republic Steel Corp Round Chain Div (USA)
Related Parts
9540-00-234-0623INTERCHANGEABLE
BEAM,STRUCTURAL
5136-00-239-2773INTERCHANGEABLE
DIE,THREAD CUTTING
3506
5340-00-247-0529INTERCHANGEABLE
BUCKLE
31104
5940-00-249-6858INTERCHANGEABLE
TERMINAL,LUG
12Z7000-1
5935-00-257-7312INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5133-00-839-5433INTERCHANGEABLE
DRILL,TWIST
31104
5330-00-868-2584INTERCHANGEABLE
GASKET,SPIRAL WOUND
31104
3020-01-414-0401INTERCHANGEABLE
GEAR,SPUR
31104
6640-01-528-2585INTERCHANGEABLE
MAINTENANCE BATH IN
3110-4
6515-01-656-8353INTERCHANGEABLE
CANNULA,CARDIOVASCULAR
31104
5305-01-701-3241INTERCHANGEABLE
THUMBSCREW
31104

Frequently Asked Questions

What is NSN 4030-00-285-9951?

NSN 4030-00-285-9951 is a Hook,slip, manufactured by Federal Specifications Promulgated by General Services Administration Washington DC, classified under FSC 4030 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4030-00-285-9951?

NSN 4030-00-285-9951 has 2 cross-referenced part numbers: RR-C-271 (Federal Specifications Promulgated by General Services Administration Washington DC), 31104 (Republic Steel Corp Round Chain Div).

What NSN replaces 4030-00-285-9951?

There are 11 known substitutes for 4030-00-285-9951: 9540-00-234-0623, 5136-00-239-2773, 5340-00-247-0529 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of RR-C-271?

Key specifications for RR-C-271: Fabrication Method: FORGED; Accommodated Material Diameter: 0.750 INCHES NOMINAL IN; Nondefinitive Spec/std Data: 5 TYPE AND 1 CLASS; Material: STEEL. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4030-00-285-9951 still in active supply?

NSN 4030-00-285-9951 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.
PartsTable Design LLC · partstable.com