PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8557Crane,floor,portable

Attco, Inc Dba Syclone Attco Service Div Sky Hook · NSN 3950-01-656-3986 · FSC 3950 · No Item Name Available
Verified by PartsTable
NSN 3950-01-656-3986 — this item is cataloged by the U.S. Government under National Stock Number 3950-01-656-3986. Primary manufacturer part number: 8557.
Features
  • Crane,floor,portable — FSC 3950
  • Boom Overhang Length: 1.75 FEET NOMINAL FT
  • Load Position Locking Method: MANUAL
  • Boom Type: REVOLVING
  • Bed Feature: NOT INCLUDED
  • Maximum Overall Height: 5.83 FEET FT
  • Retracted Length: 5.775 FEET NOMINAL FT
  • Maximum Lift Height: 6.25 FEET FT
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Crane,floor,portable, cataloged under National Stock Number 3950-01-656-3986, is classified within Federal Supply Class 3950 (No Item Name Available) of the Materials Handling Equipment group. The primary manufacturer of record is Attco, Inc Dba Syclone Attco Service Div Sky Hook. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3950-01-656-3986
Primary Part Number8557
Item NameCrane,floor,portable
FSC / FSG3950 / 39 — No Item Name Available
ManufacturerAttco, Inc Dba Syclone Attco Service Div Sky Hook
StatusACTIVE
Boom Overhang Length1.75 FEET NOMINAL FT
Load Position Locking MethodMANUAL
Boom TypeREVOLVING
Bed FeatureNOT INCLUDED
Maximum Overall Height5.83 FEET FT
Retracted Length5.775 FEET NOMINAL FT
Maximum Lift Height6.25 FEET FT
Boom DesignTELESCOPING
Extended Length2.8875 FEET NOMINAL FT
Lift Mechanism TypeCHAIN HOIST
Maximum Lifting Capacity500.0 POUNDS LBS
Operation MethodMANUAL
Design TypeBOOM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5975-00-068-6767SR-6P3-4 INTERCHANGEABLE
Bushing,strain Relief,cable
Heyco Inc Dba Heyco Products
3030-00-251-004728573 INTERCHANGEABLE
Belt,v
Contitech Usa, Inc Dba Veyance Technologies
5120-00-293-0464WT115A INTERCHANGEABLE
Crimping Tool,terminal,hand
Abb Installation Products Inc
5930-00-615-405651872 INTERCHANGEABLE
Switch,modified
Landoll Company, Llc
5305-01-605-44088557 INTERCHANGEABLE
Screw,self-Drilling
Silver Eagle Manufacturing Co
Cross-Reference Index
Part NumberManufacturer
8557 PRIMARY Attco, Inc Dba Syclone Attco Service Div Sky Hook (USA)
Related Parts
5975-00-068-6767INTERCHANGEABLE
BUSHING,STRAIN RELIEF,CABLE
SR-6P3-4
3030-00-251-0047INTERCHANGEABLE
BELT,V
28573
5120-00-293-0464INTERCHANGEABLE
CRIMPING TOOL,TERMINAL,HAND
WT115A
5930-00-615-4056INTERCHANGEABLE
SWITCH,MODIFIED
51872
5305-01-605-4408INTERCHANGEABLE
SCREW,SELF-DRILLING
8557

Frequently Asked Questions

What is NSN 3950-01-656-3986?

NSN 3950-01-656-3986 is a Crane,floor,portable, manufactured by Attco, Inc Dba Syclone Attco Service Div Sky Hook, classified under FSC 3950 (No Item Name Available). Status: active.

What are the part numbers for NSN 3950-01-656-3986?

NSN 3950-01-656-3986 has 1 cross-referenced part number: 8557 (Attco, Inc Dba Syclone Attco Service Div Sky Hook).

What NSN replaces 3950-01-656-3986?

There are 5 known substitutes for 3950-01-656-3986: 5975-00-068-6767, 3030-00-251-0047, 5120-00-293-0464 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8557?

Key specifications for 8557: Boom Overhang Length: 1.75 FEET NOMINAL FT; Load Position Locking Method: MANUAL; Boom Type: REVOLVING; Bed Feature: NOT INCLUDED. 15 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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