PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3478Wrench,spanner

Allison Transmission Inc Dba Allison Transmission, Inc · NSN 5120-00-032-9550 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-032-9550 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-032-9550. Primary manufacturer part number: 3478.
Features
  • Wrench,spanner — FSC 5120
  • Outside Diameter: 1.750 INCHES NOMINAL IN
  • Lug Width: 0.230 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
  • Handle Hole Diameter: 0.563 INCHES NOMINAL IN
  • Drive Surface Size: 0.754 INCHES MINIMUM AND 0.765 INCHES MAXIMUM SINGLE END IN
  • Surface Treatment: CHROMIUM AND NICKEL AND OXIDE OVERALL
  • Angle Between Lugs: 90.0 DEGREES NOMINAL
  • Lug Length: 0.230 INCHES NOMINAL IN
Applications
  • Applications requiring Steel Comp 1020 Overall construction
General Description

The Wrench,spanner, cataloged under National Stock Number 5120-00-032-9550, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Allison Transmission Inc Dba Allison Transmission, Inc. Government technical data includes 10 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-00-032-9550
Primary Part Number3478
Item NameWrench,spanner
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerAllison Transmission Inc Dba Allison Transmission, Inc
StatusACTIVE
Outside Diameter1.750 INCHES NOMINAL IN
Lug Width0.230 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
Handle Hole Diameter0.563 INCHES NOMINAL IN
Drive Surface Size0.754 INCHES MINIMUM AND 0.765 INCHES MAXIMUM SINGLE END IN
Surface TreatmentCHROMIUM AND NICKEL AND OXIDE OVERALL
Angle Between Lugs90.0 DEGREES NOMINAL
Lug Length0.230 INCHES NOMINAL IN
Opening Diameter1.125 INCHES NOMINAL IN
MaterialSTEEL COMP 1020 OVERALL
Drive End ShapeSQUARE SINGLE END INTERNAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
3110-00-100-0774160418 INTERCHANGEABLE
Cone and Rollers,tapered Roller
Acf Industries Inc
5935-00-134-1422 INTERCHANGEABLE
Connector Assembly,electrical
5315-00-696-32253478 INTERCHANGEABLE
Pin,drive,power Actuated
Illinois Tool Works Inc
6150-01-019-06003478 INTERCHANGEABLE
Bus,conductor
Fluke Electronics Corp
3010-01-064-06153478-0005 INTERCHANGEABLE
Clutch Assembly,friction
Bae Systems Information & Electronic Systems Integration Inc.
5310-01-113-58883478 INTERCHANGEABLE
Nut,plain,round
Keystone Electronics Corp
4710-01-196-31153478 INTERCHANGEABLE
Pipe,metallic
Lebus International, Inc.
5330-01-314-0804J1128P43 INTERCHANGEABLE
Seal,plain
General Electric Company
5120-01-339-03682002MRMHSS INTERCHANGEABLE
Wrench,torque
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5120-01-396-6071 INTERCHANGEABLE
Wrench,torque
Cross-Reference Index
Part NumberManufacturer
3478 PRIMARY Allison Transmission Inc Dba Allison Transmission, Inc (USA)
3478 General Motors Llc Dba General Motors Llc (USA)
3478 General Motors Corp (USA)
Related Parts
3110-00-100-0774INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
160418
5935-00-134-1422INTERCHANGEABLE
CONNECTOR ASSEMBLY,ELECTRICAL
5315-00-696-3225INTERCHANGEABLE
PIN,DRIVE,POWER ACTUATED
3478
6150-01-019-0600INTERCHANGEABLE
BUS,CONDUCTOR
3478
3010-01-064-0615INTERCHANGEABLE
CLUTCH ASSEMBLY,FRICTION
3478-0005
5310-01-113-5888INTERCHANGEABLE
NUT,PLAIN,ROUND
3478
4710-01-196-3115INTERCHANGEABLE
PIPE,METALLIC
3478
5330-01-314-0804INTERCHANGEABLE
SEAL,PLAIN
J1128P43
5120-01-339-0368INTERCHANGEABLE
WRENCH,TORQUE
2002MRMHSS
5120-01-396-6071INTERCHANGEABLE
WRENCH,TORQUE

Frequently Asked Questions

What is NSN 5120-00-032-9550?

NSN 5120-00-032-9550 is a Wrench,spanner, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-00-032-9550?

NSN 5120-00-032-9550 has 3 cross-referenced part numbers: 3478 (Allison Transmission Inc Dba Allison Transmission, Inc), 3478 (General Motors Llc Dba General Motors Llc), 3478 (General Motors Corp).

What NSN replaces 5120-00-032-9550?

There are 10 known substitutes for 5120-00-032-9550: 3110-00-100-0774, 5935-00-134-1422, 5315-00-696-3225 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3478?

Key specifications for 3478: Overall Length: 14.938 INCHES NOMINAL IN; Outside Diameter: 1.750 INCHES NOMINAL IN; Lug Width: 0.230 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN; Handle Hole Diameter: 0.563 INCHES NOMINAL IN. 12 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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